What is a scaling actually removing? How is it different from brushing my own teeth?

The difference lies in the physical state of what is being dealt with: brushing at home handles nonmineralized biofilm, while the professional layer handles calculus that has already calcified and whose attachment has been strengthened [F62][F63]. The development of dental calculus is a dynamic process that starts with a nonmineralized biofilm and gradually calcifies, and the process of mineralization itself strengthens the attachment of the biofilm to the tooth surface [F62]; from a clinical point of view, dental calculus always harbours a living, nonmineralized biofilm [F63]. The literature defines a routine scale and polish as scaling or polishing, or both, of the crown and root surfaces of teeth, in order to remove local irritational factors such as plaque, calculus, debris and staining [F35]. How far treatment actually needs to go must be assessed by a dentist after examination.

Where does the “twice a day, two minutes each time” figure come from?

It is a recommendation on which three international sources agree, but the nature of its evidence needs to be known alongside it [F5][F13][F24]. The World Health Organization recommends twice-daily tooth brushing with fluoride-containing toothpaste (1000 to 1500 ppm) [F5]; the American Dental Association's general recommendation is twice a day, with a fluoride toothpaste, for two minutes [F13]; and the consensus report of the European Federation of Periodontology supports all people brushing twice a day for at least 2 minutes with fluoridated dentifrice [F24]. On the two minutes: the available systematic reviews found that two minutes was associated with a greater reduction in plaque than one minute [F16], but the data of that kind rely on plaque indices, a surrogate measure rather than a direct measure of caries or gingivitis [F17]. One further point: what was evaluated in the studies was the frequency of tooth-brushing with a fluoride toothpaste, not the act of brushing on its own [F15].

Floss or interdental brush — which should I use?

The evidence points towards interdental brushes, but the choice also depends on the condition of your interdental spaces and on whether you will keep it up [F25][F44][F18]. The Cochrane review of 35 randomised controlled trials with 3,929 adults records that interdental brushes may be more effective than floss [F44]; the consensus report of the European Federation of Periodontology states that interdental brushes are the device of choice for interproximal plaque removal, and that floss is for sites where an interdental brush will not pass through the interproximal area without trauma [F25]. But the same Cochrane review judges its own evidence to be of low to very low certainty and notes that the effect sizes may not be clinically important [F46], and no trials assessed interproximal caries [F48]. On the doing of it, flossing is a technique-sensitive intervention [F18], and for any given patient the method that works will be the one that they will regularly perform [F18]. The condition of your interdental spaces is a matter for clinical examination and must be assessed by a dentist.

🏛 Part of the "reports" topic shelf →

The Complete Guide to Scaling and Everyday Oral Care: the biofilm timeline, the three layers of action, and the decision logic behind recall intervals｜證據鏈

km 編輯部2026-08-13About 34 min read

#證據鏈 #牙醫領域 #洗牙 #診間

本頁是〈The Complete Guide to Scaling and Everyday Oral Care: the biofilm timeline, the three layers of action, and the decision logic behind recall intervals〉的事實單元帳：每一條主張對應的來源、證據等級、地域與期間、原文引句與限制，逐條攤開。

The Complete Guide to Scaling and Everyday Oral Care: the biofilm timeline, the three layers of action, and the decision logic behind recall intervals｜證據鏈

F-Units (fact ledger)

Expand the fact ledger (each entry carries source # / confidence / basis / geo / period / span / caveat)

F1｜source #1｜confidence: verified (loaded live 2026-08-06, HTTP 200 + verbatim comparison)｜basis: clinical_guideline｜geo: universal｜period: page marked 17 March 2025｜span:「Dental caries results when plaque forms on the surface of a tooth and converts the free sugars」／「A continued high intake of free sugars, inadequate exposure to fluoride and a lack of removal of plaque by toothbrushing can lead to caries, pain and sometimes tooth loss and infection.」｜caveat: An institution-level patient-education statement, not the law of any country; a population-level description of mechanism that does not predict an individual outcome
F2｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「The main risk factors for periodontal disease are poor oral hygiene and tobacco use.」｜caveat: The original wording is 「main risk factors」, which is not exhaustive; the full set of risk factors for periodontal disease belongs to the periodontal domain
F3｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「Oral diseases are caused by a range of modifiable risk factors common to many noncommunicable diseases (NCDs), including sugar consumption, tobacco use, alcohol use and poor hygiene, and their underlying social and commercial determinants.」｜caveat: A causal framework stated at public-health level; it is not used to attribute cause in any individual
F4｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「Adequate exposure to fluoride is an essential factor in the prevention of dental caries.」｜caveat: 「adequate exposure」 specifies neither formulation nor dose; this article does not convert it into any instruction for use
F5｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「Twice-daily tooth brushing with fluoride-containing toothpaste (1000 to 1500 ppm) should be encouraged.」｜caveat: The original wording 「should be encouraged」 is the phrasing of a public-health recommendation; the concentration is a guidance parameter, not an instruction for individual use
F6｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025 (the page also notes these are drawn from the Global Burden of Disease 2021)｜span:「It is estimated that oral diseases affect nearly 3.7 billion people.」／「Severe periodontal diseases are estimated to affect more than 1 billion cases worldwide.」｜caveat: Both are estimated values, and the unit of the second is cases rather than people; this article presents them on the same basis as the original
F7｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「Most oral health conditions are largely preventable and can be treated in their early stages.」｜caveat: The original wording is 「largely preventable」, not an absolute statement, and it may not be rewritten as an absolute promise of any kind
F8｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: the resolution was passed at the Seventy-fourth World Health Assembly in 2021 (as recorded in the 2025 version of the page)｜span:「The Resolution recommends a shift from the traditional curative approach towards a preventive approach」｜caveat: A policy recommendation by an international organisation; it does not amount to a system already adopted by any country
F9｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「Prevention and treatment for oral health conditions is expensive and usually not part of national universal health coverage (UHC) benefit packages.」／「Out-of-pocket costs for oral health care can be major barriers to accessing care.」｜caveat: A general global description that does not describe the system of any particular country; the local scope of coverage is always as announced by the authorities where you are
F10｜source #1｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2025｜span:「The disease is characterized by bleeding or swollen gums (gingivitis), pain and sometimes bad breath.」｜caveat: A description of the features of the disease, not a criterion for self-diagnosis or self-grading; symptom grading belongs to another domain
F11｜source #2｜confidence: verified (loaded live 2026-08-06, HTTP 200 + verbatim comparison)｜basis: clinical_guideline｜geo: universal｜period: page footer marked Last Updated: August 8, 2024｜span:「An individual who visits the dentist twice a year for an oral exam and dental prophylaxis will spend approximately two hours per year in the dental chair.」／「The time for that same person to brush and clean between his or her teeth each day might be estimated to be around 30 hours per year.」｜caveat: The original uses 「approximately」 and 「might be estimated」, an illustrative estimate rather than a measured statistic
F12｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「Spending the right amount of time engaged in appropriate home oral care is essential to helping minimize the risk of caries and periodontal disease.」／「Home oral care is an important contributor to oral health and can help lessen the need for extensive dental intervention in the future.」｜caveat: The original wording is 「can help lessen」, not a promise of any outcome
F13｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「Brush your teeth twice a day with a fluoride toothpaste for two minutes」｜caveat: A general recommendation of the association; the same page states plainly that it may be adjusted for an individual patient by a dentist
F14｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「twice-daily brushing, when compared with lower frequencies, was optimal for reducing risk of caries」｜caveat: The comparator in the original is lower frequencies, not higher ones; 「optimal」 is that page's summarising word for the existing evidence
F15｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「It is important to recognize that in these studies, it was the frequency of tooth-brushing with a fluoride toothpaste that was evaluated rather than tooth-brushing alone.」｜caveat: This unit is a disclosure of a methodological limitation; on its basis this article draws no inference at all about the effect of brushing on its own
F16｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「the available systematic reviews found a brushing duration of two minutes was associated with greater reduction in plaque than brushing for a single minute.」／「Two minutes per whole mouth can also be expressed as thirty seconds per quadrant or about four seconds per tooth.」｜caveat: A statement of association (associated with); the converted values are illustrative for communication, not a specification for practice
F17｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「Data examining the question of optimal duration of daily tooth-brushing encounters relies on plaque indices, which are surrogate measures rather than direct measure of caries or gingivitis.」｜caveat: The limitation of surrogate measures is disclosed by the source itself; this article quotes it as it stands and does not soften it
F18｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「Flossing is a technique-sensitive intervention」／「the best method for any given patient will be the one that they will regularly perform」｜caveat: The second half is that page's principle for clinical communication, not a conclusion comparing effectiveness
F19｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「a systematic review of the literature failed to arrive at consensus regarding optimal recall frequency to minimize either caries」／「there is merit in tailoring a patient's recall interval to individual need based on assessed risk of disease」｜caveat: The original wording 「there is merit in」 is not a mandatory rule; risk assessment is the responsibility of a professional
F20｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「the conclusion of numerous systematic reviews on the effect of the macronutrient content of the diet, specifically of sugar, is that there is an association between sugar intake and caries.」｜caveat: The original word is 「association」; this article does not raise it to a causal claim at the level of an individual
F21｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「there is strong evidence supporting the use of fluoride-containing mouthrinses by children at elevated caries risk」｜caveat: The population is restricted to children at elevated caries risk; it may not be extrapolated into a recommendation for the general population or for adults, and the manner of use must be directed by a dentist
F22｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「Both manual and powered toothbrushes can provide effective removal of dental plaque and reduction in gingival inflammation when used appropriately.」／「For patients seeking or needing improved plaque removal, such as for patients with special needs, those who require the help of a caregiver for activities of daily living, or those with manual dexterity deficit, consider a powered toothbrush.」｜caveat: The condition in the original is 「when used appropriately」; this article recommends no brand and no model
F23｜source #2｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2024｜span:「a dentist may tailor home oral care recommendations to fit the individual patient's needs and wants」｜caveat: The original wording is 「may tailor」, describing the room for clinical discretion, not a rule
F24｜source #3｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: clinical_guideline｜geo: universal｜period: published 2015 (EFP Workshop 11 consensus report, PMID 25639826)｜span:「We support the almost universal recommendations that all people should brush their teeth twice a day for at least 2 min. with fluoridated dentifrice.」｜caveat: The consensus position of a working group; the same report also records that some of its conclusions are at the level of expert opinion
F25｜source #3｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2015｜span:「IDBs are the device of choice for interproximal plaque removal.」／「Flossing cannot be recommended other than for sites of gingival and periodontal health, where inter-dental brushes (IDBs) will not pass through the interproximal area without trauma.」｜caveat: The original wording is 「device of choice」, which this article renders as a neutral description in order to avoid a marketing-style superlative; whether it applies depends on the physical condition of the interdental space, which is a matter for clinical examination
F26｜source #3｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2015｜span:「Re-chargeable power toothbrushes provide small but statistically significant additional reductions in gingival inflammation and plaque levels.」｜caveat: The original states plainly 「small but statistically significant」, and it may not be rewritten as clinically significant
F27｜source #3｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2015｜span:「Data support the belief that professionally administered plaque control significantly improves gingival inflammation and lowers plaque scores, with some evidence that reinforcement of oral hygiene provides further benefit.」｜caveat: The original says 「support the belief」 and 「some evidence」; the strength of evidence is marked by the source itself, and this article does not strengthen it
F28｜source #3｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2015｜span:「in high-risk patients it appears that the critical threshold for plaque accumulation to trigger periodontitis is low」／「Expert opinion is that for periodontitis patients 2 min. is likely to be insufficient」｜caveat: The first sentence uses 「it appears that」; the second is marked by the source itself as expert opinion rather than a trial result; both are restricted to high-risk patients / patients with periodontitis
F29｜source #3｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2015｜span:「In patients with gingivitis once daily inter-dental cleaning is recommended」｜caveat: The population is restricted to patients who already have gingivitis; it is not a frequency rule for the general population
F30｜source #3｜confidence: verified｜basis: clinical_guideline｜geo: universal｜period: 2015｜span:「Periodontitis is preventable and treatment leads to reduced rates of tooth loss and improved quality of life.」｜caveat: A statement of treatment outcomes at population level; it does not constitute a promise of any therapeutic result to any individual; actual outcomes vary from person to person and must be assessed by a dentist
F31｜source #4｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 39382084)｜geo: universal｜period: published 2025 (electronic pre-publication 2024-10-09)｜span:「routine S&P may have little clinical benefit but reduces tooth loss and some health care expenses」／「One systematic review and one multicenter trial of adults with regular dental care found no clinical benefit regardless of S&P interval; however, patients valued and were willing to pay for regular scaling.」｜caveat: The population is restricted to adults with no periodontal disease or early periodontal disease who have regular access to dental care; this review is a Rapid Review, not a full systematic review, and its policy context is the Canadian dental care plan. ⚠️ The two halves of the conclusion are of different evidential types: the limited benefit comes from a systematic review and a multicentre trial, while the reduction in tooth loss and in some expenses comes from 1 claims-data study plus 2 clinical practice guidelines (see F80); it may not be cited by taking only the second half, nor may the second half be presented as evidence of the same strength as the first
F32｜source #4｜confidence: verified｜basis: peer_reviewed (PMID 39382084)｜geo: universal｜period: 2025｜span:「In patients with periodontitis, scaling intervals tailored to individual risk profile and periodontal status can maintain health.」／「Tailored intervals for dental scaling are beneficial for those diagnosed with periodontitis but may not provide the clinical benefits previously expected for adults at low risk.」｜caveat: The population is restricted to those already diagnosed with periodontitis; the abstract gives no specific criterion for what counts as tailored, which is a matter of clinical judgement
F33｜source #4｜confidence: verified｜basis: peer_reviewed (PMID 39382084)｜geo: universal｜period: 2025｜span:「There is no evidence that dental polishing is effective.」｜caveat: No evidence of effectiveness is not the same as proof of ineffectiveness; this article uses it only to show that a scaling is a composite action in the literature
F34｜source #4｜confidence: verified｜basis: peer_reviewed (PMID 39382084)｜geo: universal｜period: 2025｜span:「There were no studies of underserved populations.」｜caveat: An explicitly recorded gap in the evidence; on its basis this article draws no inference about people whose access to care is obstructed
F35｜source #5｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 30590875, Cochrane CD004625.pub5)｜geo: universal｜period: published 2018, searched to 2018-01-10｜span:「A 'routine scale and polish' treatment is defined as scaling or polishing, or both, of the crown and root surfaces of teeth to remove local irritational factors (plaque, calculus, debris and staining)」／「The technique may also be referred to as prophylaxis, professional mechanical plaque removal or periodontal instrumentation.」｜caveat: An operational definition used by that review; it does not amount to the definition of a covered item in any country's insurance system
F36｜source #5｜confidence: verified｜basis: peer_reviewed (PMID 30590875)｜geo: universal｜period: follow-up 24 to 36 months｜span:「routine scale and polish treatment makes little or no difference to gingivitis, probing depths and oral health-related quality of life over two to three years follow-up when compared with no scheduled scale and polish treatments (high-certainty evidence)」｜caveat: The population is restricted to adults without severe periodontitis who obtain routine dental care regularly; the outcomes are limited to the three listed; the follow-up runs to two or three years and may not be extrapolated into a lifetime conclusion
F37｜source #5｜confidence: verified｜basis: peer_reviewed (PMID 30590875)｜geo: universal｜period: follow-up 24 to 36 months｜span:「Routine scaling and polishing reduces calculus levels compared with no routine scaling and polishing, with six-monthly treatments reducing calculus more than 12-monthly treatments over two to three years follow-up (high-certainty evidence), although the clinical importance of these small reductions is uncertain.」｜caveat: The original itself marks the clinical importance as uncertain; this article quotes it as it stands, and the first half may not be cited on its own with that qualifier removed
F38｜source #5｜confidence: verified｜basis: peer_reviewed (PMID 30590875)｜geo: universal｜period: 2018｜span:「We included two studies with 1711 participants in the analyses.」／「Both studies were conducted in UK general dental practices and involved adults without severe periodontitis who were regular attenders at dental appointments.」／「The studies did not assess adverse effects.」｜caveat: Only 2 studies, in the primary-care practice setting of a single country; adverse effects were not assessed, which is a gap in the evidence and may not be read as evidence of safety
F39｜source #6｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 30829399, Cochrane CD007868.pub3)｜geo: universal｜period: published 2019, searched to 2018-08-15｜span:「1000 to 1250 ppm or 1450 to 1500 ppm fluoride toothpaste reduces caries increments when compared with non-fluoride toothpaste」｜caveat: The comparator in that passage is non-fluoride toothpaste; the certainty of the evidence for these two ranges is graded high and moderate respectively in the original, and the certainty for comparisons of other concentrations is lower
F40｜source #6｜confidence: verified｜basis: peer_reviewed (PMID 30829399)｜geo: universal｜period: studies published between 1955 and 2014 were included｜span:「We included 96 studies published between 1955 and 2014 in this updated review.」／「a dose-response effect was observed for D(M)FS in children and adolescents」｜caveat: The observation of a dose-response effect is restricted to the permanent teeth of children and adolescents and may not be extrapolated to adults
F41｜source #6｜confidence: verified｜basis: peer_reviewed (PMID 30829399)｜geo: universal｜period: 2019｜span:「The choice of fluoride toothpaste concentration for young children should be balanced against the risk of fluorosis.」｜caveat: A statement about weighing a trade-off, not an instruction on which concentration to use; the choice of products for young children must be assessed case by case by a dentist
F42｜source #6｜confidence: verified｜basis: peer_reviewed (PMID 30829399)｜geo: universal｜period: 2019｜span:「Regular toothbrushing with fluoride toothpaste is the principal non-professional intervention to prevent caries」｜caveat: The original restricts this positioning to the category of non-professional interventions; it is not a comparison of effect against the professional layer
F43｜source #6｜confidence: verified｜basis: peer_reviewed (PMID 30829399)｜geo: universal｜period: 2019｜span:「Only a minority of studies assessed adverse effects of toothpaste. When reported, effects such as soft tissue damage and tooth staining were minimal.」｜caveat: Only a minority of studies assessed adverse effects, so the evidence is thin; minimal is the original's word and may not be rewritten as an absence of adverse effects
F44｜source #7｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 30968949, Cochrane CD012018.pub2)｜geo: universal｜period: published 2019, searched to 2019-01-16｜span:「Using floss or interdental brushes in addition to toothbrushing may reduce gingivitis or plaque, or both, more than toothbrushing alone.」／「Interdental brushes may be more effective than floss.」｜caveat: Both sentences use may in the original; the same review judges its own evidence to be of low to very low certainty (see F46), and this article may not write them up as conclusions of certainty
span: "We included 35 RCTs (3929 randomised adult participants)."
F45｜source #7｜confidence: verified｜basis: peer_reviewed (PMID 30968949)｜geo: universal｜period: 2019｜span:「Available evidence for tooth cleaning sticks and oral irrigators is limited and inconsistent.」｜caveat: Limited and inconsistent is not the same as proven ineffective
F46｜source #7｜confidence: verified｜basis: peer_reviewed (PMID 30968949)｜geo: universal｜period: 2019｜span:「We included 35 RCTs (3929 randomised adult participants).」／「Overall, the evidence was low to very low-certainty, and the effect sizes observed may not be clinically important.」／「Outcomes were mostly measured in the short term and participants in most studies had a low level of baseline gingival inflammation.」｜caveat: The population is restricted to adults; a low level of baseline gingival inflammation is a possible source of a ceiling effect, and on that basis this article does not extrapolate the effect sizes to people with marked gingival inflammation
F47｜source #7｜confidence: verified｜basis: peer_reviewed (PMID 30968949)｜geo: universal｜period: 2019｜span:「Studies that measured adverse events found no severe events caused by devices, and no evidence of differences between study groups in minor effects such as gingival irritation.」｜caveat: Restricted to those studies that measured adverse events; not all included studies measured them, and this may not be read as a claim about safety
F48｜source #7｜confidence: verified｜basis: peer_reviewed (PMID 30968949)｜geo: universal｜period: 2019｜span:「No trials assessed interproximal caries, and most did not assess periodontitis.」｜caveat: An explicit gap in measurement; on its basis this article makes no statement about the effect of interdental cleaning on preventing decay
F49｜source #8｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 24934383, Cochrane CD002281.pub3)｜geo: universal｜period: published 2014, searched to 2014-01-23｜span:「Fifty-six trials met the inclusion criteria; 51 trials involving 4624 participants provided data for meta-analysis.」／「Powered toothbrushes reduce plaque and gingivitis more than manual toothbrushing in the short and long term.」｜caveat: The original records 5 studies at low risk of bias, 5 at high and 46 unclear; both meta-analyses showed high heterogeneity
F50｜source #8｜confidence: verified｜basis: peer_reviewed (PMID 24934383)｜geo: universal｜period: 2014｜span:「The clinical importance of these findings remains unclear.」｜caveat: This sentence is part of that review's conclusion and may not be separated from F49 and cited on its own
F51｜source #8｜confidence: verified｜basis: peer_reviewed (PMID 24934383)｜geo: universal｜period: 2014｜span:「The greatest body of evidence was for rotation oscillation brushes which demonstrated a statistically significant reduction in plaque and gingivitis at both time points.」｜caveat: A description of the quantity of evidence, not a ranking of effect between designs; this article recommends no head design and no product
F52｜source #8｜confidence: verified｜basis: peer_reviewed (PMID 24934383)｜geo: universal｜period: 2014｜span:「Any reported side effects were localised and only temporary.」｜caveat: The same passage states plainly that cost, reliability and side effects were inconsistently reported, so this unit may not serve as a claim about safety
F53｜source #9｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 27472005, Cochrane CD002284.pub2)｜geo: universal｜period: published 2016, searched to 2016-04-22｜span:「is associated with a large reduction in caries increment in permanent teeth」／「the D(M)FS pooled PF was 27% (95% confidence interval (CI), 23% to 30%; I(2) = 42%) (moderate quality evidence)」｜caveat: PF = prevented fraction, a measure at the level of populations; the population is restricted to children and adolescents
F54｜source #9｜confidence: verified｜basis: peer_reviewed (PMID 27472005)｜geo: universal｜period: 2016｜span:「In this review, we included 37 trials involving 15,813 children and adolescents.」／「All trials tested supervised use of fluoride mouthrinse in schools, with two studies also including home use.」／「Most studies (28) were at high risk of bias, and nine were at unclear risk of bias.」｜caveat: The setting of every trial was supervised use in schools, and it may not be extrapolated to adults or to unsupervised use at home; 28 of the 37 were at high risk of bias
span: "From the 35 trials (15,305 participants) that contributed data on permanent tooth surface for meta-analysis, the D(M)FS pooled PF was 27% (95% confidence interval (CI), 23% to 30%; I(2) = 42%) (moderate quality evidence)."
F55｜source #9｜confidence: verified｜basis: peer_reviewed (PMID 27472005)｜geo: universal｜period: 2016｜span:「We found limited information concerning possible adverse effects or acceptability of the treatment regimen in the included trials.」｜caveat: Limited information is a gap in the evidence and may not be read as safety
F56｜source #10｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 33053198, Cochrane CD004346.pub5)｜geo: universal｜period: published 2020, searched to 2020-01-17; follow-up 4 years｜span:「there is little to no difference between risk-based and 6-month recall intervals in the number of tooth surfaces with any caries, gingival bleeding and oral-health-related quality of life over a 4-year period (high-certainty evidence)」｜caveat: The population is restricted to adults attending regularly in a primary care setting; the outcomes are limited to the three listed; little to no difference is a two-way statement and may not be read in one direction as showing either strategy to be superior
F57｜source #10｜confidence: verified｜basis: peer_reviewed (PMID 33053198)｜geo: universal｜period: 2020｜span:「Recommendations regarding optimal recall intervals vary between countries and dental healthcare systems, but 6-month dental check-ups have traditionally been advocated by general dental practitioners in many high-income countries.」｜caveat: A description of the state of affairs (recommendations differ between countries; six months is a traditional advocacy), not a normative basis for any system; this article does not use it to judge the arrangements of any region
F58｜source #10｜confidence: verified｜basis: peer_reviewed (PMID 33053198)｜geo: universal｜period: 2020｜span:「We included two studies with data from 1736 participants.」／「The available evidence on recall intervals between dental check-ups for children and adolescents is uncertain.」／「The two trials we included in the review did not assess adverse effects of different recall strategies.」｜caveat: Only 2 studies; the evidence for children and adolescents is uncertain; adverse effects were not assessed, which is a gap in the evidence
F59｜source #11｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 23846772, Cochrane CD002279.pub2)｜geo: universal｜period: published 2013, searched to 2013-05-13｜span:「the pooled D(M)FS prevented fraction estimate comparing fluoride varnish with placebo or no treatment was 43% (95% confidence interval (CI) 30% to 57%; P < 0.0001)」／「The pooled d(e/m)fs prevented fraction estimate was 37% (95% CI 24% to 51%; P < 0.0001)」｜caveat: The population is restricted to children and adolescents under 16; these are prevented fractions at population level and cannot be used to estimate an individual outcome; application is by a professional
F60｜source #11｜confidence: verified｜basis: peer_reviewed (PMID 23846772)｜geo: universal｜period: 2013｜span:「The review suggests a substantial caries-inhibiting effect of fluoride varnish in both permanent and primary teeth, however the quality of the evidence was assessed as moderate, as it included mainly high risk of bias studies, with considerable heterogeneity.」｜caveat: The original itself grades the quality of evidence as moderate with considerable heterogeneity; this article may not remove the qualifier and cite the first half alone
F61｜source #11｜confidence: verified｜basis: peer_reviewed (PMID 23846772)｜geo: universal｜period: 2013｜span:「There was little information concerning possible adverse effects or acceptability of treatment.」｜caveat: Little information is a gap in the evidence and may not be read as safety
F62｜source #12｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison)｜basis: peer_reviewed (PMID 29194797)｜geo: universal｜period: published 2018 (electronic pre-publication 2017-12-01)｜span:「The development of dental calculus is a dynamic process that starts with a nonmineralized biofilm which eventually calcifies.」／「The process of mineralization involves metabolic activities of the bacterial colonies and strengthens the attachment of nonmineralized biofilms to the tooth surface.」｜caveat: This paper is a narrative review, not a systematic review; the description is at the level of mechanism and gives no figure for how long anything takes, so this article writes no timescale of the how-many-days-until-it-calcifies kind
F63｜source #12｜confidence: verified｜basis: peer_reviewed (PMID 29194797)｜geo: universal｜period: 2018｜span:「From a clinical point of view, dental calculus always harbors a living, nonmineralized biofilm, jeopardizing the integrity of the dento-gingival or implanto-mucosal unit.」｜caveat: A clinical viewpoint stated in a narrative review; this article uses it to explain why the professional layer exists, and draws no inference about the frequency of any procedure
F64｜source #12｜confidence: verified｜basis: peer_reviewed (PMID 29194797)｜geo: universal｜period: 2018｜span:「Nonmineralized dental biofilm entraps particles from the oral cavity, including large amounts of oral bacteria, human proteins, viruses and food remnants, and preserves their DNA.」｜caveat: A description in a narrative review; this article draws no inference from it about any risk of infection
F65｜source #13｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 28759120, Cochrane CD001830.pub5)｜geo: universal｜period: published 2017｜span:「Resin-based sealants applied on occlusal surfaces of permanent molars are effective for preventing caries in children and adolescents.」／「Our review found moderate-quality evidence that resin-based sealants reduced caries by between 11% and 51% compared to no sealant, when measured at 24 months.」｜caveat: The population is restricted to the occlusal surfaces of the permanent molars of children and adolescents; 11%–51% is the range at 24 months, and both the quantity and the quality of evidence fall off over longer follow-up; the original states plainly that blinding of outcome assessment was at high risk of bias in all trials
F66｜source #13｜confidence: verified｜basis: peer_reviewed (PMID 28759120)｜geo: universal｜period: 2017｜span:「There was insufficient evidence to judge the effectiveness of glass ionomer sealant or the relative effectiveness of different types of sealants.」／「Information on adverse effects was limited but none occurred where this was reported.」｜caveat: Only 4 trials assessed adverse events; limited but none occurred may not be rewritten as an absence of adverse effects
F67｜source #14｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 39362658, Cochrane CD010856.pub3)｜geo: universal｜period: published 2024, searched to 2023-08-16｜span:「Community water fluoridation (CWF) is currently practised in about 25 countries; health authorities consider it to be a key strategy for preventing dental caries.」｜caveat: A background description; that health authorities consider it a key strategy is a report of the state of affairs, not the position of this site, and not a statement of any country's policy
F68｜source #14｜confidence: verified｜basis: peer_reviewed (PMID 39362658)｜geo: universal｜period: 2024｜span:「We included 157 studies. All used non-randomised designs.」／「Contemporary studies indicate that initiation of CWF may lead to a slightly greater reduction in dmft and may lead to a slightly greater increase in the proportion of caries-free children, but with smaller effect sizes than pre-1975 studies.」｜caveat: All included studies were of non-randomised design, and the original therefore downgrades the certainty of all the evidence; the population is restricted to children (see F70)
F69｜source #14｜confidence: verified｜basis: peer_reviewed (PMID 39362658)｜geo: universal｜period: the fluorosis evidence is carried over from the 2015 version, and this update did not re-run the search for that outcome｜span:「With a fluoride level of 0.7 parts per million (ppm), approximately 12% of participants had fluorosis of aesthetic concern (95% CI 8% to 17%; 40 studies, 59,630 participants), and approximately 40% had fluorosis of any level (95% CI 35% to 44%; 90 studies, 180,530 participants).」｜caveat: The original states plainly that this is low-certainty evidence from the previous version and that no new search was run for this outcome in the update; this article marks it as such
F70｜source #14｜confidence: verified｜basis: peer_reviewed (PMID 39362658)｜geo: universal｜period: 2024｜span:「We found no eligible studies that report caries outcomes in adults.」｜caveat: An explicit gap in the evidence; on its basis this article makes no statement about the effect of water fluoridation in adults
F71｜source #15｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 24323509)｜geo: universal｜period: published 2014 (produced to inform an update of the World Health Organization's guidance on sugar intake)｜span:「caries is lower when free-sugars intake is < 10% E」／「With the < 5% E cut-off, a significant relationship was observed, but the evidence was judged to be of very low quality.」｜caveat: The quality of evidence for the two cut-offs differs (moderate vs very low) and they may not be stated together as one; E = total energy intake; this article gives no dietary prescription
F72｜source #15｜confidence: verified｜basis: peer_reviewed (PMID 24323509)｜geo: universal｜period: 2014｜span:「From 5,990 papers identified, 55 studies were eligible」／「Of the studies, 42 out of 50 of those in children and 5 out of 5 in adults reported at least one positive association between sugars and caries.」｜caveat: The included studies are mainly of observational design (3 intervention, 8 cohort, 20 population, 24 cross-sectional); the original states that the variability of the data limited meta-analysis
F73｜source #15｜confidence: verified｜basis: peer_reviewed (PMID 24323509)｜geo: universal｜period: 2014｜span:「The findings are relevant to minimizing caries risk throughout the life course.」｜caveat: The authors' statement about the scope of application, not a promise of any outcome
F74｜source #16｜confidence: verified (PubMed efetch HTTP 200 + verbatim comparison)｜basis: peer_reviewed (PMID 29195050)｜geo: universal｜period: published 2018 (electronic pre-publication 2017-12-01)｜span:「Dental diseases are now viewed as a consequence of a deleterious shift in the balance of the normally stable resident oral microbiome.」｜caveat: This paper is a review, not a systematic review or a trial; it is an academic view at the level of mechanism and is not a basis for any procedure
F75｜source #16｜confidence: verified｜basis: peer_reviewed (PMID 29195050)｜geo: universal｜period: 2018｜span:「It is known that frequent carbohydrate consumption or reduced saliva flow can lead to caries, and excessive plaque accumulation increases the risk of periodontal diseases.」｜caveat: A statement at the level of mechanism; the causes and management of reduced saliva flow belong to another domain
F76｜source #16｜confidence: verified｜basis: peer_reviewed (PMID 29195050)｜geo: universal｜period: 2018｜span:「acidification due to carbohydrate fermentation or inflammation in response to accumulated plaque select for a cariogenic or periopathogenic microbiota, respectively, in a chain of self-reinforcing events」｜caveat: A model described at the level of mechanism; this article uses it to explain the fork between the two pathways and makes no determination of individual risk
F77｜source #16｜confidence: verified｜basis: peer_reviewed (PMID 29195050)｜geo: universal｜period: 2018｜span:「while some individuals appear to be susceptible, others are more tolerant or resilient to suffering from undesirable changes in their oral microbiome」｜caveat: The original wording is 「appear to be」; determining susceptibility in an individual is a clinical matter, and this article supplies no self-assessment tool
F78｜confidence: structural compilation (an editorial framework, not a claim of external fact)｜basis: editorial_framework｜geo: universal｜period: 2026-08-06｜span: this article's “table of the two disease pathways”, “three-stage biofilm timeline”, “graded architecture of the three layers of action”, “three-question decision framework for interdental tools”, “spectrum table of fluoride formulations” and “skeleton of the care pathway”, together with the navigational passages throughout, are a communication framework compiled by this site from sources #1 to #16｜caveat: Not a clinical criterion, not a diagnostic tool and not a specification for clinical practice; it does not replace examination and assessment by a dentist
F80｜source #4｜confidence: verified (added in the independent re-verification round of 2026-08-06; PubMed efetch HTTP 200 + verbatim comparison after newline normalisation)｜basis: peer_reviewed (PMID 39382084)｜geo: universal｜period: 2025｜span:「One claims-based study reported regular S&P reduced tooth loss, and 2 clinical practice guidelines found a reduced risk of future attachment and tooth loss, lower overall health care costs for diabetes, and reduced costs for and incidence of acute myocardial infarction in those with regular S&P.」｜caveat: This unit is a disclosure of the evidence behind the second half of the conclusion in F31 — the reduction in tooth loss rests on a single claims-based study, an observational design from which causation cannot be inferred; the reduction in health care expenses comes from 2 clinical practice guidelines rather than primary trials; and the statements about the costs of diabetes and acute myocardial infarction are restricted to patients with those conditions, may not be extrapolated to the general population, and may not be rewritten into a claim of any kind that scaling prevents myocardial infarction or diabetes
F79｜confidence: structural compilation (a statement of evidence gaps, not a claim of external fact)｜basis: editorial_framework｜geo: universal｜period: 2026-08-06｜span: questions for which this article's pool of sources contains no direct evidence — ① adjustments to prevention plans during pregnancy and breastfeeding ② the effect of systemic disease or medication status on each of the layers ③ arrangements in the professional layer for older people and those in long-term care ④ long-term comparisons of the preventive measures across socio-economic groups ⑤ the effect of brushing alone without fluoride toothpaste (the studies in the source pool evaluate toothpaste and frequency together throughout; see F15) ⑥ validation of the clinical threshold of the six-month recall itself (the source pool contains only comparisons with other intervals, and no study validating that number as such; see F56 and F57)｜caveat: No evidence obtained is not the same as proven to carry no risk or proven ineffective, nor is it the same as proven effective; this article therefore lists no self-applied contraindication checklist, and infers no superiority or inferiority of any procedure or interval from the absence of evidence

Compliance note

This article is health education information, published as medical news and patient health education. It does not solicit medical business and is not medical advertising; it recommends, compares and evaluates no medical institution, dentist or product, and it carries no clinic listing (the first edition at this layer carries none, and the rules for listing are still to be decided separately).

Every preventive measure described here (scaling, the various fluoride formulations, pit and fissure sealants, interdental cleaning devices and powered toothbrushes) has its indications, its possible adverse effects and its situations of non-applicability; the actual method of treatment and its results vary from person to person and must be assessed by a dentist. The effects, prevented fractions, proportions and confidence intervals cited here are population statistics at the level of research; they cannot be used to estimate an individual outcome and they cannot replace a clinical diagnosis.

The fluoride concentrations (ppm), brushing durations, recall intervals and frequencies that appear in the text are parameters recorded in research or in international guidance, not instructions for use; do not buy or use any fluoride preparation on the strength of this article, and do not lengthen or shorten a recall interval on the strength of it either. The regulatory classification, approval status, labelling requirements and the qualifications required to apply each product differ from place to place, and are always as announced by the competent authority where you are; this article makes no determination of local legality or coverage.

This article gives no monetary amount and explains only what costs are made of and what makes them vary. If you have questions about your own situation, go to a healthcare institution and be examined and assessed by a dentist.

Source list

All access dates are 2026-08-06. PubMed entries were obtained as abstract text through E-utilities efetch, with whitespace normalised before verbatim comparison (`re.sub(r'\s+',' ',text)`, because the plain-text output wraps at about 80 characters); institutional pages were loaded live with curl, then stripped of `` and `` and of tags, with HTML entities restored and curly quotes and whitespace normalised, before verbatim comparison. Across all 16 entries the span comparison came out at 112/112 hits, 0 misses (comparison script: `verify.py`, run once end to end).

Entries in the anchor file not used in this article (marked honestly)

`ida-pillars/anchors/P11-anchors.md` holds 14 entries, of which 5 are Taiwanese statutory and official sources (Article 85 of the Medical Care Act, Article 51 of the National Health Insurance Act, an indicator page of the National Health Insurance Administration, and two patient-education announcements of the Ministry of Health and Welfare). Given the global framing of this line, Taiwanese statutes, insurance and health-bureau material may not serve as a basis for this article, so not one of them is used here; the related local material is handled uniformly by links down to the corresponding canonical cards (TW). The 3 clinical_guideline entries in the anchor file (#06 WHO, #07 ADA, #08 EFP) and the 6 peer_reviewed entries (#09–#14) are all used here, corresponding to sources #1–#9 of this article.

One difference in framing from the anchor file (marked honestly): the purpose column of anchor entry #14 records that the review “can reduce caries increment in permanent teeth by about 27%”; in F53 this article instead adopts the original wording, pooled prevented fraction 27% (95% CI 23% to 30%), and adds the population and setting restrictions (15,813 children and adolescents, all supervised use in schools, 28/37 trials at high risk of bias) [F54]. The reason: a prevented fraction (PF) is a proportion of prevention at population level, and writing it directly as “a reduction of about 27%” reads too easily as a promise of effect at the level of an individual.

Internal citation chain

The question-level canonical card of this domain (scaling frequency): How often to have a scaling (KM-DENTAL-43, in production)
The question-level canonical card of this domain (mouthwash, primary anchor in the periodontal domain): How to choose a mouthwash (KM-DENTAL-06)
The whole domain of periodontal and gingival care (including antimicrobial mouthwashes, periodontal treatment and gingival recession): Pillar P05 Periodontal and gingival care (in production)
The whole domain of caries and restorations (the progression of caries, decisions about restoration): Pillar P04 Caries and restorations (in production)
The whole domain of paediatric dentistry (caries in primary teeth, fluoride application and sealants from the child's perspective): Pillar P14 Paediatric dentistry (in production)
Symptom grading and the red flags for seeking care: Pillar P13 Symptom triage and the guide to seeking care (in production)
What costs are made of, and insurance frameworks in different places: Pillar P12 Costs and insurance systems (a global view, in production)

FAQ

What is a scaling actually removing? How is it different from brushing my own teeth?: **The difference lies in the physical state of what is being dealt with: brushing at home handles nonmineralized biofilm, while the professional layer handles calculus that has already calcified and whose attachment has been strengthened [F62][F63].** The development of dental calculus is a dynamic process that starts with a nonmineralized biofilm and gradually calcifies, and the process of mineralization itself strengthens the attachment of the biofilm to the tooth surface [F62]; from a clinical point of view, dental calculus always harbours a living, nonmineralized biofilm [F63]. The literature defines a routine scale and polish as scaling or polishing, or both, of the crown and root surfaces of teeth, in order to remove local irritational factors such as plaque, calculus, debris and staining [F35]. How far treatment actually needs to go must be assessed by a dentist after examination.; 歯石除去（スケーリング）は結局のところ何を落としているのですか？自分で磨くのと何が違うのですか？ — **違うのは対象の物理的な状態です：自分で磨くときに扱っているのは未石灰化のバイオフィルムであり、専門的レイヤーが扱うのはすでに石灰化し、付着力が強められた歯石です [F62][F63]。** 歯石の形成は未石灰化のバイオフィルムから始まり、やがて石灰化していく動的な過程であり、石灰化の過程そのものがバイオフィルムの歯面への付着を強めます [F62]；そして臨床的な観点から見ると、歯石は常に生きた未石灰化のバイオフィルムを抱えています [F63]。文献の「ルーティンのスケーリングとポリッシング」の定義は、歯冠と歯根の表面に対して歯石除去または研磨、あるいはその両方を行い、プラーク、歯石、残渣、着色といった局所の刺激因子を除去することです [F35]。実際にどの程度まで処置する必要があるかは、歯科医師の検査による評価が必要です。; What is a scaling actually removing? How is it different from brushing my own teeth? — **The difference lies in the physical state of what is being dealt with: brushing at home handles nonmineralized biofilm, while the professional layer handles calculus that has already calcified and whose attachment has been strengthened [F62][F63].** The development of dental calculus is a dynamic process that starts with a nonmineralized biofilm and gradually calcifies, and the process of mineralization itself strengthens the attachment of the biofilm to the tooth surface [F62]; from a clinical point of view, dental calculus always harbours a living, nonmineralized biofilm [F63]. The literature defines a routine scale and polish as scaling or polishing, or both, of the crown and root surfaces of teeth, in order to remove local irritational factors such as plaque, calculus, debris and staining [F35]. How far treatment actually needs to go must be assessed by a dentist after examination.
Where does the “twice a day, two minutes each time” figure come from?: **It is a recommendation on which three international sources agree, but the nature of its evidence needs to be known alongside it [F5][F13][F24].** The World Health Organization recommends twice-daily tooth brushing with fluoride-containing toothpaste (1000 to 1500 ppm) [F5]; the American Dental Association's general recommendation is twice a day, with a fluoride toothpaste, for two minutes [F13]; and the consensus report of the European Federation of Periodontology supports all people brushing twice a day for at least 2 minutes with fluoridated dentifrice [F24]. On the two minutes: the available systematic reviews found that two minutes was associated with a greater reduction in plaque than one minute [F16], but the data of that kind rely on plaque indices, a surrogate measure rather than a direct measure of caries or gingivitis [F17]. One further point: what was evaluated in the studies was the frequency of tooth-brushing with a fluoride toothpaste, not the act of brushing on its own [F15].; 「1 日 2 回、毎回 2 分間」というこの数字はどこから来たのですか？ — **三つの国際的な出典が一致している推奨ですが、そのエビデンスの性質も一緒に知っておく必要があります [F5][F13][F24]。** 世界保健機関はフッ化物配合歯磨剤（1000 から 1500 ppm）による 1 日 2 回のブラッシングを推奨しています [F5]；米国歯科医師会の一般的な推奨は 1 日 2 回、フッ化物配合歯磨剤、2 分間です [F13]；欧州歯周病学会の合意報告は、すべての人が 1 日 2 回、毎回少なくとも 2 分間、フッ化物配合歯磨剤を用いることを支持しています [F24]。「2 分間」については、既存のシステマティックレビューが 2 分間は 1 分間と比較してより大きなプラークの減少と関連していることを見いだしていますが [F16]、この種のデータが依拠しているのはプラーク指数という代替指標であって、う蝕や歯肉炎の直接的な測定ではありません [F17]。もう一つ注意すべきなのは、研究で評価されたのは「フッ化物配合歯磨剤を用いたブラッシングの頻度」であって、ブラッシングという行為単独ではないということです [F15]。; Where does the “twice a day, two minutes each time” figure come from? — **It is a recommendation on which three international sources agree, but the nature of its evidence needs to be known alongside it [F5][F13][F24].** The World Health Organization recommends twice-daily tooth brushing with fluoride-containing toothpaste (1000 to 1500 ppm) [F5]; the American Dental Association's general recommendation is twice a day, with a fluoride toothpaste, for two minutes [F13]; and the consensus report of the European Federation of Periodontology supports all people brushing twice a day for at least 2 minutes with fluoridated dentifrice [F24]. On the two minutes: the available systematic reviews found that two minutes was associated with a greater reduction in plaque than one minute [F16], but the data of that kind rely on plaque indices, a surrogate measure rather than a direct measure of caries or gingivitis [F17]. One further point: what was evaluated in the studies was the frequency of tooth-brushing with a fluoride toothpaste, not the act of brushing on its own [F15].
Floss or interdental brush — which should I use?: **The evidence points towards interdental brushes, but the choice also depends on the condition of your interdental spaces and on whether you will keep it up [F25][F44][F18].** The Cochrane review of 35 randomised controlled trials with 3,929 adults records that interdental brushes may be more effective than floss [F44]; the consensus report of the European Federation of Periodontology states that interdental brushes are the device of choice for interproximal plaque removal, and that floss is for sites where an interdental brush will not pass through the interproximal area without trauma [F25]. But the same Cochrane review judges its own evidence to be of low to very low certainty and notes that the effect sizes may not be clinically important [F46], and no trials assessed interproximal caries [F48]. On the doing of it, flossing is a technique-sensitive intervention [F18], and for any given patient the method that works will be the one that they will regularly perform [F18]. The condition of your interdental spaces is a matter for clinical examination and must be assessed by a dentist.; デンタルフロスと歯間ブラシ、どちらを使うべきですか？ — **エビデンスの方向は歯間ブラシを指していますが、選択は歯と歯の間の条件と、あなたが続けられるかどうかにも左右されます [F25][F44][F18]。** Cochrane が 35 篇のランダム化比較試験、3,929 人の成人を組み入れたレビューは、歯間ブラシがデンタルフロスより効果的である可能性があると記録しています [F44]；欧州歯周病学会の合意報告は、歯間ブラシが隣接面のプラーク除去において選択される器具である（原文 device of choice）と明記し、デンタルフロスは歯間ブラシが隣接面を無傷で通過できない場合に用いるとしています [F25]。しかし同じ Cochrane レビューは自己評価としてエビデンスを低いから非常に低い確実性とし、効果量は臨床的に重要でない可能性があるとしており [F46]、また隣接面のう蝕を評価した試験は一つもありません [F48]。実行の面では、フロッシングは技術に敏感な介入であり [F18]、ある特定の患者にとって最も適した方法は、その人が規則的に実行するであろう方法です [F18]。歯と歯の間の条件は臨床検査の項目であり、歯科医師の評価が必要です。; Floss or interdental brush — which should I use? — **The evidence points towards interdental brushes, but the choice also depends on the condition of your interdental spaces and on whether you will keep it up [F25][F44][F18].** The Cochrane review of 35 randomised controlled trials with 3,929 adults records that interdental brushes may be more effective than floss [F44]; the consensus report of the European Federation of Periodontology states that interdental brushes are the device of choice for interproximal plaque removal, and that floss is for sites where an interdental brush will not pass through the interproximal area without trauma [F25]. But the same Cochrane review judges its own evidence to be of low to very low certainty and notes that the effect sizes may not be clinically important [F46], and no trials assessed interproximal caries [F48]. On the doing of it, flossing is a technique-sensitive intervention [F18], and for any given patient the method that works will be the one that they will regularly perform [F18]. The condition of your interdental spaces is a matter for clinical examination and must be assessed by a dentist.

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Cite this article

km 編輯部・《The Complete Guide to Scaling and Everyday Oral Care: the biofilm timeline, the three layers of action, and the decision logic behind recall intervals｜證據鏈》・IDAEO 知識庫・2026-08-13・https://km.idaeo.ai/reports/dental-pillar-prevention-evidence

更新 2026-08-13T14:17:35.351Z · server-rendered · four-language · IDAEO 知識庫

The Complete Guide to Scaling and Everyday Oral Care: the biofilm timeline, the three layers of action, and the decision logic behind recall intervals｜證據鏈

The Complete Guide to Scaling and Everyday Oral Care: the biofilm timeline, the three layers of action, and the decision logic behind recall intervals｜證據鏈

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