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牙齿突然掉了一颗怎么办？｜證據鏈

km 編輯部2026-08-13阅读约 45 分钟
#證據鏈#牙醫KM#台灣#牙冠

本頁是〈牙齿突然掉了一颗怎么办？〉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。

牙齿突然掉了一颗怎么办？｜證據鏈

F-Units（事实单元账）

  • F1｜confidence: verified｜basis: internal_dataset｜period: 2025-03 至 2026-08 GSC｜geo: TW｜span: backlog #30“牙齿掉了怎么办”等 6 个词项合计曝光 112,586，全部集中于单站｜caveat: 曝光为属性级数字，非去重流量；本条发布时剥除
  • F2｜confidence: 结构性整理（编辑框架，非外部事实主张）｜basis: editorial_framework｜period: 2026-08-06｜geo: universal｜span: “四路分流（外伤恒牙／乳牙／自然松脱／非真牙）”与“红旗清单”的编排，为本站依 F3 至 F31 各来源整理的沟通框架｜caveat: 非诊断工具，不能替代临床判断
  • F3｜confidence: verified｜basis: clinical_guideline（IADT 2020 指引二，Dent Traumatol 2020;36(4):331-342，DOI 10.1111/edt.12573；PubMed 条目见来源清单第 1 项）｜period: 2020 现行版｜geo: universal｜span（取自 Wiley 开放获取全文第 1 节，2026-08-06 以 ego-browser 实测取回；PubMed 摘要不含此段）: 「the prognosis is very much dependent on the actions taken at the place of accident and promptly following the avulsion」／「There are also individual situations when replantation is not indicated (eg, severe caries or periodontal disease, an uncooperative patient, severe cognitive impairment requiring sedation, severe medical conditions such as immunosuppression, and severe cardiac conditions) which must be dealt with individually」／「However, not replanting a tooth is an irreversible decision and therefore saving it should be attempted」／「The IADT does not, and cannot, guarantee favorable outcomes from adherence to the Guidelines」｜caveat: 共识指引，非随机试验结果
  • F4｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 2 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「An avulsed permanent tooth is one of the few real emergency situations in dentistry」／「Dentists should be prepared to give appropriate advice to the public about first aid for avulsed teeth」／「Also, instructions may be given by telephone to people at the emergency site」／「Immediate replantation of the avulsed tooth is the best treatment at the place of the accident」｜caveat: 属指引对现场处置的总述，非个别病例建议
  • F5｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 2 节现场步骤清单）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「If a tooth is avulsed, make sure it is a permanent tooth (primary teeth should not be replanted) and follow these recommended instructions」／「Keep the patient calm」／「Find the tooth and pick it up by the crown (the white part). Avoid touching the root. Attempt to place it back immediately into the jaw」／「If the tooth is dirty, rinse it gently in milk, saline or in the patient's saliva and replant or return it to its original position in the jaw」／「Once the tooth has been returned to its original position in the jaw, the patient should bite on gauze, a handkerchief or a napkin to hold it in place」｜caveat: 指引原文未列刷洗、擦拭或消毒浸泡等步骤，本卡据此不写该类动作
  • F6｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 2 节保存介质段）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「place the tooth, as soon as possible, in a storage or transport medium that is immediately available at the emergency site」／「This should be done quickly to avoid dehydration of the root surface, which starts to happen in a matter of a few minutes」／「In descending order of preference, milk, HBSS, saliva (after spitting into a glass for instance), or saline are suitable and convenient storage mediums. Although water is a poor medium, it is better than leaving the tooth to air-dry」｜caveat: 偏好顺序为指引叙述，非统计排名
  • F7｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 2 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「The tooth can then be brought with the patient to the emergency clinic」／「See a dentist or dental professional immediately」｜caveat: 台湾的就医路径（急诊或牙科院所）依当地可及性而定
  • F8｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 3 节细胞状态分层）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Minimizing the dry time is critical for survival of the PDL cells. After an extra-alveolar dry time of 30 minutes, most PDL cells are non-viable」／「The PDL cells are most likely viable. The tooth has been replanted immediately or within a very short time (about 15 minutes) at the place of accident」／「The PDL cells may be viable but compromised. The tooth has been kept in a storage medium (eg, milk, HBSS (Save-a-Tooth or similar product), saliva, or saline, and the total extra-oral dry time has been <60 minutes)」／「The PDL cells are likely to be non-viable. The total extra-oral dry time has been more than 60 minutes, regardless of the tooth having been stored in a medium or not」｜caveat: 指引三层都以“口外干放时间”表述；本卡不将其换算成“离开嘴巴到就诊的时间”
  • F9｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 3.1.3 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Delayed replantation has a poor long-term prognosis. The periodontal ligament becomes necrotic and is not expected to regenerate. The expected outcome is ankylosis-related (replacement) root resorption」／「Therefore, the decision to replant a permanent tooth is almost always the correct decision even if the extra-oral dry time is more than 60 minutes. Replantation will keep future treatment options open」／「decoronation or other procedures such as autotransplantation might be necessary later if the replanted tooth becomes ankylosed and infra-positioned」｜caveat: 指引同段写明粘连与吸收的发生率变异很大且难以预测
  • F10｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 3.1.1 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Verify the correct position of the replanted tooth both clinically and radiographically」／「If the tooth or teeth were replanted in the wrong socket or rotated, consider repositioning the tooth/teeth into the proper location up to 48 hours after the traumatic incident」｜caveat: 48 小时为指引给牙医师的处置窗，不是公众可自行操作的期限
  • F11｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 3.1.1 与第 11.1 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Stabilize the tooth for 2 weeks using a passive flexible splint」／「Replanted teeth should be monitored clinically and radiographically at 2 weeks (when the splint is removed), 4 weeks, 3 months, 6 months, one year, and yearly thereafter for at least five years」｜caveat: 合并牙槽骨或颌骨骨折时指引另有较长固定期；开放根尖者追踪更密集
  • F12｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 9 节患者指示）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Avoid participation in contact sports」／「Maintain a soft diet for up to 2 weeks, according to the tolerance of the patient」／「Brush their teeth with a soft toothbrush after each meal」／「Use a chlorhexidine (0.12%) mouth rinse twice a day for 2 weeks」｜caveat: 属指引给医师的卫生教育清单；实际用法须由牙医师依个别情况指示，本卡不作药物建议
  • F13｜confidence: verified｜basis: clinical_guideline（同 F3 来源，第 8 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Although most people receive tetanus immunization and boosters, it cannot be assumed that this is always the case. Refer the patient to a physician for evaluation of the need for a tetanus booster」｜caveat: 指引写的是转介医师评估，不是直接接种；台湾接种时程另见 F31
  • F14｜confidence: verified（指引记载已逐字取回；IADT 网站入口 2026-08-06 实测 HTTP 200，标题为 International Association of Dental Traumatology）｜basis: clinical_guideline（同 F3 来源，第 2 节）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「available in multiple languages: Arabic, Basque, Bosnian, Bulgarian, Catalan, Czech, Chinese, Dutch, English」／「This educational resource can be obtained at the IADT website」／「for mobile phones, is another useful source of information for patients, providing instructions on what to do in an emergency situation after a dental injury」｜caveat: IADT 网站首页内容为动态加载，海报与应用程序的下载路径及现行内容未逐字验证；本卡仅记录其在指引中的存在与定位
  • F15｜confidence: verified｜basis: clinical_guideline（IADT 2020 指引三，Dent Traumatol 2020;36(4):343-359，DOI 10.1111/edt.12576；PubMed 条目见来源清单第 2 项）｜period: 2020 现行版｜geo: universal｜span（取自 Wiley 开放获取全文第 1.10 节，2026-08-06 以 ego-browser 实测取回；PubMed 摘要不含此段）: 「An avulsed primary tooth should not be replanted. Reasons include a significant treatment burden (including replantation, splint placement and removal, root canal treatment) for a young child as well as the potential of causing further damage to the permanent tooth or to its eruption. However, the most important reason is to avoid a medical emergency resulting from aspiration of the tooth」｜caveat: 乳牙与恒牙的处置方向相反，本卡在四处分别陈述以防混用
  • F16｜confidence: verified｜basis: clinical_guideline（同 F15 来源，Table 12 乳牙脱出）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「The location of the missing tooth should be explored during the trauma history and examination, especially when the accident was not witnessed by an adult or there was a loss of consciousness」／「While avulsed teeth are most often lost out of the mouth, there is a risk that they can be embedded in soft tissues of the lip, cheek, or tongue, pushed into the nose, ingested or aspirated」／「If the avulsed tooth is not found, the child should be referred for medical evaluation to an emergency room for further examination, especially where there are respiratory symptoms」｜caveat: 原文语境为乳牙列；本卡在红旗章节引用时保留“找不到牙齿＋呼吸道症状”的原始条件
  • F17｜confidence: verified｜basis: clinical_guideline（同 F15 来源，Table 12 乳牙脱出）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Avulsed primary teeth should not be replanted」／「To encourage gingival healing and prevent plaque accumulation, parents should clean the affected area with a soft brush or cotton swab combined with an alcohol-free 0.1%-0.2% chlorhexidine gluconate mouth rinse applied topically twice a day for 1 wk」／「Further follow up at 6 y of age is indicated to monitor eruption of the permanent tooth」｜caveat: 追踪时程原文为 6-8 wk 的临床检查；影像追踪仅在临床发现提示病理变化时才建议
  • F18｜confidence: verified｜basis: clinical_guideline（同 F15 来源，第 1 节导论）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「For children, aged 0-6 years, oral injuries account for 18% of all physical injuries and the mouth is the second most common area of the body to be injured」／「A recent meta-analysis on traumatic dental injuries (TDIs) reveals a world prevalence of 22.7% affecting the primary teeth」／「They most commonly occur between 2 and 6 years of age」｜caveat: 为指引引用的他人荟萃分析数字，不是台湾本地数据
  • F19｜confidence: verified｜basis: clinical_guideline（同 F15 来源，第 1.7 节与恒牙发育影响段）｜period: 2020 现行版｜geo: universal｜span（同上取回方式）: 「Clinicians should check whether the history of the accident and the injuries sustained are consistent or match. In situations where there is suspicion of abuse, prompt referral for a full physical examination and investigation of the incident should be arranged」／「Intrusion and avulsion injuries are most commonly associated with the development of anomalies in the permanent dentition」｜caveat: 转介流程依各地规定，指引明确写超出其范围
  • F20｜confidence: verified｜basis: clinical_guideline（IADT 2020 指引一，Dent Traumatol 2020;36(4):314-330，DOI 10.1111/edt.12578；PubMed 条目见来源清单第 3 项）｜period: 2020 现行版｜geo: universal｜span（取自 Wiley 开放获取全文，2026-08-06 以 ego-browser 实测取回；PubMed 摘要不含后一句）: 「Crown fractures and luxations of these teeth are the most commonly occurring of all dental injuries」／「back into the tooth socket under local anesthesia」｜caveat: 本卡仅用于指出“未完全脱出的移位属于另一份指引，且复位是牙医师在局部麻醉下的处置”，不引用其个别术式建议
  • F21｜confidence: verified｜basis: peer_reviewed（PMID 37194850）｜period: 2017-01 至 2021-12 追踪，2023 刊出｜geo: universal｜span: 「Sixty-two permanent replanted teeth were retrospectively assessed」／「Thirty-one teeth (50.0%) remained in their sockets and 31 (50.0%) were lost due to external root resorption. Of the 25 (40.3%) teeth replanted within one hour, 16 (64.0%) remained in their sockets, and 9 (36.0%) were lost. Twenty-two (71.0%) of all 31 lost teeth had an extra-alveolar time of more than one hour」／「The extra-alveolar time of less than one hour was demonstrated to be important to keep the permanent tooth in its socket」｜caveat: 单中心回顾性研究、样本 62 颗，属研究层级比例，不可作个人预后估计
  • F22｜confidence: verified｜basis: peer_reviewed（PMID 30720860，Cochrane CD006542.pub3）｜period: 检索至 2018-03-08，2019-02 刊出｜geo: universal｜span: 「Four studies, involving a total of 183 participants and 257 teeth were identified」／「All evidence was rated as being of very low quality due to problems with risk of bias and imprecision of results」／「there is insufficient evidence to support or refute the effectiveness of different interventions for avulsed and replanted permanent front teeth」｜caveat: 版本链已查（2010 pub2 PMID 20091594 → 2019 pub3 为现行版，PubMed 以 CD006542 检索无更新版）；pubtype 不含 Retracted Publication
  • F23｜confidence: verified｜basis: peer_reviewed（PMID 30193009）｜period: 2018 刊出，纳入 15 篇研究｜geo: universal｜span: 「In 15 selected studies, nine storage media (HBSS, tap water, DMEM, milk, saliva, 10% and 20% propolis, Gatorade, and Viaspan) were analyzed at six time points. For storage up to 2 hours, HBSS, DMEM, milk, 10% propolis, 20% propolis, and Viaspan conserved more than 80% of PDL viability」／「Milk remains the most convenient, cheapest, and readily available solution in most situations while also being capable of keeping PDL cells alive」｜caveat: 体外人类牙周韧带细胞培养研究的合并结果，非临床疗效；原文形容词为研究者评语，本卡以中性措辞转述
  • F24｜confidence: verified｜basis: peer_reviewed（PMID 40792198）｜period: 检索 2014 至 2024；线上先行发表 2025-07-31，卷期标示 2025 年 9-10 月｜geo: universal｜span: 「This systematic review and MA suggests that placentrex and aloevera could represent an alternative to HBSS. However, more studies are necessary to obtain a reliable conclusion」｜caveat: 事故簿第 9 条的时效查核用——本卡确认保存介质题已有 2025 年更新综述，其结论未推翻指引的现场介质顺序；pubtype 不含 Retracted Publication
  • F25｜confidence: verified｜basis: peer_reviewed（PMID 33648772）｜period: 2022 刊出，纳入 3 篇研究｜geo: universal｜span: 「Three studies (4396 extractions in total) could be included for the risk of bias assessment and qualitative data synthesis」／「The reported indications for tooth extraction on dental and medical grounds included caries with the proportion of all extractions ranging from 36.0% to 55.3%, periodontitis from 24.8% to 38.1%, trauma from 0.8% to 4.4%, periapical disease from 7.3% to 19.1%」｜caveat: 统计对象为“拔牙的适应证”，不是“自然脱落的原因”；纳入研究仅 3 篇，作者也写明可靠估计仍缺乏
  • F26｜confidence: verified｜basis: peer_reviewed（PMID 29926495，2017 世界工作坊分期分级框架）｜period: 2018 刊出｜geo: universal｜span: 「Stage I to IV of periodontitis is defined based on severity (primarily periodontal breakdown with reference to root length and periodontitis-associated tooth loss), complexity of management (pocket depth, infrabony defects, furcation involvement, tooth hypermobility, masticatory dysfunction)」｜caveat: 分期属临床诊断框架，须由牙医师依完整检查判定，本卡不作分期判读
  • F27｜confidence: verified｜basis: peer_reviewed（PMID 42131949）｜period: 线上发表日 2026-05-14（esummary epubdate 实查，早于本卡日期 2026-08-06）｜geo: universal｜span: 「Fifty articles comprising 55 population-based cohorts (287 750 participants from 37 countries) were included」／「Individuals with nonfunctional dentition had approximately twice the odds of impaired OHRQoL compared with those with functional dentition」／「odds ratio (OR) = 2.08; 95% CI 1.72-2.52」｜caveat: 纳入研究多为横断面设计，属关联性证据，不能推论因果或个人结果
  • F28｜confidence: verified（同 #28 卡锚）｜basis: peer_reviewed（PMID 30155575）｜period: 2019 刊出｜geo: universal｜span: 「The investigated haemostatics included gauze pressure」／「The interruption of antithrombotics prior to tooth removal because of the fear of bleeding or following postoperative bleeding increases the risk of thromboembolic events」｜caveat: 原研究情境为拔牙后出血，本卡仅引用止血措施类别与自行停药的风险，不作外伤出血处置指示
  • F29｜confidence: verified（2026-08-06 ego-browser 实测全国法规资料库页面逐字比对，同 VERIFIED-FACTS 既有锚）｜basis: law｜period: 现行条文｜geo: TW｜span: 《全民健康保险法》第 51 条“十一、義齒、義眼、眼鏡、助聽器、輪椅、拐杖及其他非具積極治療性之裝具。”｜caveat: 个别给付以健保署现行公告为准，本卡不作给付判定
  • F30｜confidence: verified（2026-08-06 ego-browser 实测逐字比对）｜basis: law｜period: 现行条文｜geo: TW｜span: 《医疗法》第 81 条“醫療機構診治病人時，應向病人或其法定代理人、配偶、親屬或關係人告知其病情、治療方針、處置、用藥、預後情形及可能之不良反應。”｜caveat: 条文引述，非法律意见
  • F31｜confidence: verified（2026-08-06 ego-browser 实测取回，页面标示更新日期 2026/4/21）｜basis: official_statement｜period: 页面现况｜geo: TW｜span: 台湾卫生福利部疾病管制署“破伤风－疾病介绍”：“民众若发现伤口有被土壤、尘土或动物及人类粪便污染，或生锈器具割伤，需至医院进行适当之治疗，并于治疗时告知医师伤口有被污染。”／“完成基础接种后，每隔 10 年应给予追加 1 剂减量破伤风、白喉、百日咳疫苗(Tdap)。”｜caveat: 该页未针对牙外伤情境作专章说明；是否需要追加由医师依个别接种史判断
  • F32｜confidence: verified（2026-08-06 ego-browser 实测取回，下拉选单逐项读取）｜basis: official_statement｜period: 页面现况｜geo: TW｜span: 台湾卫生福利部中央健康保险署“健保特约医事机构查询”页（页面标题逐字为“衛生福利部中央健康保險署-健保特約醫事機構查詢”），查询条件含县市、乡镇市、院所层级／特约类别，“已加入计划”选项清单中包含“牙医急诊医疗不足区奖励试办计划-医院(牙医急诊试办中心)”｜caveat: 该计划名称本身指向医疗资源不足地区的奖励试办，非全国牙科急诊总表；实际可就诊时段仍须逐一致电确认
  • F33｜confidence: verified（2026-08-06 ego-browser 实测，同 #9 卡锚 C3 家族）｜basis: official_statement｜period: 数据集现况（诠释资料更新时间 2026-07-13）｜geo: TW｜span: 政府数据开放平台数据集“臺北市醫療收費標準”，提供机关台北市政府卫生局｜caveat: 单一县市例证；其他县市页面放量前逐一补验
  • F34｜confidence: n/a｜basis: editorial（结构性整理，非文献导出）｜period: 2026-08-06｜geo: universal｜内容：家长在急症现场无法辨识乳牙或恒牙时的默认安全动作（不硬放回、置入保存介质、立即就医由医师判断）。｜caveat：本条为本站依据 IADT 恒牙与乳牙两份指引的处置差异所作的保守整理，非指引原文条文，不得作为文献证据引用。

来源清单

取用日期均为 2026-08-06。PubMed 条目以 E-utilities efetch 取得摘要原文并逐条对应 span；IADT 三份指引为 Wiley 开放获取文章，以 ego-browser 打开后取 innerText 逐字比对（其 span 不在 PubMed 摘要中，故对应 F-Unit 不标 PMID 前缀，避免机器闸门拿错文本比对）；台湾法规与官方页面一律以 ego-browser 实载后逐字比对。

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  2. Day PF, et al. International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 3. Injuries in the primary dentition. Dent Traumatol. 2020;36(4):343-359. PMID 32458553
  3. Bourguignon C, et al. International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 1. Fractures and luxations. Dent Traumatol. 2020;36(4):314-330. PMID 32475015
  4. Roskamp L, et al. Retrospective analysis of survival of avulsed and replanted permanent teeth according to 2012 or 2020 IADT Guidelines. Braz Dent J. 2023;34(2):122-128. PMID 37194850
  5. Day PF, Duggal M, Nazzal H. Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted. Cochrane Database Syst Rev. 2019;2(2):CD006542. PMID 30720860
  6. Adnan S, et al. Evaluation of periodontal ligament cell viability in different storage media based on human PDL cell culture experiments—A systematic review. Dent Traumatol. 2018;34(6):387-402. PMID 30193009
  7. Kumar S, et al. The evaluation of periodontal ligament cell viability for an avulsed tooth using various storage media: A systematic review and meta-analysis. J Oral Biol Craniofac Res. 2025;15(5). PMID 40792198
  8. Broers DLM, et al. Reasons for Tooth Removal in Adults: A Systematic Review. Int Dent J. 2022;72(1):52-57. PMID 33648772
  9. Tonetti MS, Greenwell H, Kornman KS. Staging and grading of periodontitis: Framework and proposal of a new classification and case definition. J Clin Periodontol. 2018;45 Suppl 20:S149-S161. PMID 29926495
  10. Tooth Loss and Edentulism Are Associated With Poorer Quality of Life: A Systematic Review and Meta-Analyses. J Periodontal Res. 2026. PMID 42131949
  11. Ockerman A, et al. Local haemostatic measures after tooth removal in patients on antithrombotic therapy: a systematic review. Clin Oral Investig. 2019;23(4):1695-1708. PMID 30155575
  12. 全民健康保险法 第 51 条（全国法规资料库）
  13. 医疗法 第 81 条（全国法规资料库）
  14. 台湾卫生福利部疾病管制署：破伤风－疾病介绍
  15. 台湾卫生福利部中央健康保险署：健保特约医事机构查询
  16. 政府数据开放平台：臺北市醫療收費標準（提供机关：台北市政府卫生局）
  17. 内部数据：`analysis/reports/km-dental-backlog.md` #30 附录（词×站×曝光逐笔可对账）
  18. 编辑框架：本站四路分流与红旗结构（无外部来源，标示为结构性整理）

内部引用链

  • 掉下来的是牙冠或假牙、并非真牙时：假牙牙套（牙冠套）是什么？缺牙能做牙套吗？（KM-DENTAL-23）
  • 牙冠重做的费用怎么问、报价单怎么读：做一颗牙冠（假牙牙套）要多少钱？（KM-DENTAL-11）
  • 牙齿保不住之后补不补、怎么决定：臼齿拔掉可以不补吗？会怎样？（KM-DENTAL-34）
  • 牙龈肿痛与该就医的分级：牙龈肿痛怎么快速消？什么情况要就医？（KM-DENTAL-05）
  • 龋齿拖着不处理会怎样：龋齿可以拖多久？会自己好吗？（KM-DENTAL-15）
发布闸门提醒：本卡为 draft。四语（zh-Hans／en／ja）未产出前不得进入 km_entries；本卡为症状分级卡且含急症红旗判准，依 ANK-DENTAL-SPEC 审核链第 5 层，须经 GM 第三意见专审（红旗完整性／分级一致性／时间分层端点）后才进入发布流程。F14 的 IADT 网站资源下载路径未逐字验证，该句维持“记录其在指引中的存在”定位，不得改写成资源导引。

FAQ

什么情况要立即就医、不能等？
找不到牙齿且有呼吸道症状、曾失去意识或出血止不住时，本站建议直接去急诊或拨打 119 [F2]。
どのような場合に直ちに受診し、待ってはいけませんか？ — 歯が見つからず呼吸器症状がある、意識を失ったことがある、または出血が止まらない場合、本サイトでは救急外来へ直接行くか 119 に電話することを勧めます [F2]。
When should I seek immediate care rather than wait? — For a missing tooth with respiratory symptoms, a prior loss of consciousness, or bleeding that will not stop, this site advises going directly to an emergency department or calling 119 [F2].
掉下来的牙齿可以泡在水里吗？
**指引把水列为较差的介质，但仍明确写它比让牙齿风干好。** 偏好顺序由高到低是牛奶、HBSS、唾液、生理盐水 [F6]。体外研究的系统性综述则显示，保存 2 小时以内时 HBSS、DMEM、牛奶等可保留超过八成的牙周韧带细胞存活率 [F23]。顺带一提，2025 年有一项新的系统性综述与荟萃分析（检索 2014 至 2024 年）比较各种介质与 HBSS，结论是 placentrex 与芦荟可能是替代选项，但需要更多研究才能得到可靠结论 [F24]——也就是说，现阶段现场能拿到的牛奶，仍位于指引偏好顺序的前端 [F6][F24]。
落ちた歯を水に入れてよいですか？ — **ガイドラインは水を不適切な媒体に挙げますが、歯を乾燥させるよりは良いと明記しています。**優先順は牛乳、HBSS、唾液、生理食塩水です [F6]。in-vitro 研究のシステマティックレビューは、2 時間以内の保存では HBSS、DMEM、牛乳などが歯根膜細胞生存率を八割超で保ち得ると示しました [F23]。さらに 2025 年の新しいシステマティックレビューとメタ解析（2014 から 2024 年を検索）は、各媒体を HBSS と比べ、placentrex とアロエベラは代替候補になり得るが、信頼できる結論にはさらなる研究が必要と結論づけました [F24]。したがって現場で手に入る牛乳は、現在もガイドラインの優先順の前方にあります [F6][F24]。
Can a tooth that fell out be put in water? — **The guideline lists water as a poor medium, but expressly says it is still better than letting the tooth air-dry.** The order of preference is milk, HBSS, saliva, and saline [F6]. An in-vitro systematic review found that, for storage up to 2 hours, HBSS, DMEM, milk, and others could conserve more than eighty percent periodontal-ligament-cell viability [F23]. In addition, a new 2025 systematic review and meta-analysis (searching 2014 through 2024) compared media with HBSS and concluded that placentrex and aloe vera might be alternatives, but more studies are needed for a reliable conclusion [F24]. Thus, milk that is available at the scene still sits near the front of the guideline’s preference order [F6][F24].
已经过了一小时，还有必要把牙齿带去吗？
**有。** 指引写的是：即使口外干放时间超过 60 分钟，决定把恒牙放回去几乎仍是正确的决定，因为再植可以保留后续治疗选择，牙齿之后仍可视需要拔除 [F9]；而不把牙齿放回去是不可逆的决定 [F3]。长期预后会较差（牙周韧带坏死、粘连性牙根吸收）[F9]，但这件事由牙医师评估，不应在现场就先放弃。
すでに 1 時間を超えています。それでも歯を持って行く意味はありますか？ — **あります。**ガイドラインは、口腔外乾燥時間が 60 分を超えていても、永久歯を再植する判断はほとんど常に正しく、再植は将来の治療選択肢を残し、歯は後で必要に応じ抜歯できると述べます [F9]。歯を戻さないことは不可逆的な判断です [F3]。長期予後はより悪くなります（歯根膜壊死、強直関連歯根吸収）[F9]が、これは歯科医師が評価することであり、現場で先に諦めるべきではありません。
It has already been over one hour. Is it still worth bringing the tooth in? — **Yes.** The guideline says that even when extra-oral dry time is over 60 minutes, deciding to replant the permanent tooth is almost always correct because replantation keeps future treatment options open; the tooth can still be extracted later if needed [F9]. Not replanting it is an irreversible decision [F3]. Long-term prognosis is poorer (periodontal-ligament necrosis and ankylosis-related root resorption) [F9], but a dentist should assess this rather than the tooth being abandoned at the scene.

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km 編輯部・《牙齿突然掉了一颗怎么办？｜證據鏈》・IDAEO 知識庫・2026-08-13・https://km.idaeo.ai/post/reports/dental-tooth-lost-evidence

更新于 2026-08-14

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更新 2026-08-14T04:52:36.026Z · server-rendered · four-language · IDAEO 知識庫