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牙根断裂会怎样?一定要拔牙吗?|證據鏈

本頁是〈牙根断裂会怎样?一定要拔牙吗?〉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。

牙根断裂会怎样?一定要拔牙吗?|證據鏈

F-Units(事实单元账)

  • F1|本题选题依据=GSC 全量对账:查询词“牙根断裂”在的 web 明细共 2,753 列,曝光合计 19,322、点击 594(2026-08-06 以 awk 对 `gsc-full-20260804/__web__full.tsv` 重跑)|来源 #16|confidence=verified|basis=internal_dataset|period=GSC 保留窗(2025-03-22 起)|geo: TW|caveat:曝光为属性级数字,不是去重流量;本栏为内部数据、非医学宣称,发布转换时整条剥除。
  • F2[结构性整理]|本卡三路分流骨架(牙冠/牙尖断裂、外伤性横向或斜向根折、垂直性牙根断裂)与“冠根折为交界类型”的编排、“先分清哪一种比先问要不要拔重要”的定位、checklist 题目设计、红旗清单排序与家用观察语言的转写,以及与 KM-DENTAL-50/33/30/18/35 的同族分工声明,均为本站依据 F3 至 F29 文献整理的就医沟通结构|来源 #18|confidence=n/a|basis=editorial_framework|period=2026-08-06|geo: universal|caveat:非诊断工具、非临床分类、非决策流程图,不得标为待验证 claim;本栏不含任何疗效或时程宣称。
  • F3|欧洲牙髓病学会(ESE)关于牙齿纵裂与断裂的立场声明(专家委员会共识,2025)定义表(Table 1)及导论:垂直性牙根断裂定义为涉及牙骨质、牙本质和根管腔的不完全纵向(轴向)根裂;裂根为完全 VRF 且牙根可见分离成不同节段;裂开牙为整颗牙完全可见地分成两部分,通常为近远中方向;及时识别和恰当处置对延长患牙寿命是必要的|来源 #1|confidence=verified|basis=clinical_guideline(ESE 立场声明)|period=2025(线上 2025-01-22);检索日 2026-08-06|geo: universal|取回方式(可复现):`efetch db=pmc id=11812625 rettype=full retmode=xml`(PMC 开放获取全文),去标签后逐字比对;本栏 span 取自全文而非 PubMed 摘要,故本行不加 PMID 前缀,以免 `--spans` 对摘要比对造成假不符|span:「An incomplete longitudinal (axial) root fracture, involving the cementum, dentine, and root canal space.」「Split Root A complete VRF with visible separation of the root into distinct segments.」「Complete, visible separation of the entire tooth into 2 parts, usually in a mesio‐distal direction」「Timely identification and appropriate management are essential to increase the life span of the affected tooth.」|caveat:专家共识层级;定义为分类用语,临床归类须由牙医师判定;与 KM-DENTAL-50 卡 F3 部分同锚。
  • F4|同一立场声明的临床与影像特征表(Table 3)及 VRF 临床特征段:牙尖断裂进展期可在牙尖断掉后症状缓解,若断裂累及牙髓可能发展牙髓炎或根尖周炎症状;VRF 临床特征包括类似牙周疾病的表现、孤立而深窄的牙周袋、动度、牙龈缘附近单个或多个瘘管;早期 VRF 因病人可能无症状而不易检出;进展期 VRF 典型特征为孤立、狭窄、深的牙周袋(若在牙根两侧都探及则具病理特异性)和多个瘘管|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「Symptoms may be relieved when the cusp fractures off」「May develop pulpitis or apical periodontitis symptoms if fracture involves pulp」「Mimicking periodontal disease +/− isolated, deep, narrow periodontal pocket」「Presence of a sinus/multiple sinuses close to gingival margin」「Early‐stage VRFs are a challenge to detect as the patient may be asymptomatic」「Typical features of advanced VRF include an isolated, narrow, deep periodontal pocket (pathognomonic if detected on both sides of a root) and the presence of multiple sinus tracts」|caveat:表列项目混合医师检查所见与病人症状;本卡不把它重组为诊断准则;探诊深度是医师测量值,不是病人可自行判断的项目;原文表内有拼写误植,本卡照录原文不代为更正。
  • F5|同一立场声明“根管治疗牙齿的 VRF”节(患病率与病因):VRF 较常与已做根管治疗牙齿相关;已报告的“已做根管治疗且有 VRF 的牙齿拔除患病率”为 4% 至 32%;上颌(前)磨牙与下颌磨牙较常受影响;VRF 发生率随年龄上升,40 岁以上较常见;VRF 是根管治疗牙齿拔除的常见原因,占 13% 至 21%;导论还记载 VRF 通常隐匿进展,导致诊断延迟而拔除|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「VRF is more commonly associated with RFT than NFRT. The reported prevalence of extraction of RFT with VRF ranges from 4% to 32%」「The incidence of VRF increases with age, being more prevalent in 40+ year‐old patients」「VRF is a common cause of extraction (13–21%) of RFT」「A VRF commonly progresses subtly, leading to a delayed diagnosis that results in extraction.」|caveat:“4% to 32%”与“13–21%”的分母在原文均未逐字界定(前者字面为 prevalence of extraction of RFT with VRF,后者为 a common cause of extraction of RFT 的括号值)。本卡均照原文转述,不代为解释,也不在正文作人群推论或个人风险推算;两组数字均为该声明转引的他人研究,并非本声明原始统计,本卡未取回这些原始文献。
  • F6|同一立场声明“根管治疗牙齿的 VRF”节(临床处置):预后不佳;一旦诊断成立建议及时处置,以降低急性根尖周炎症状和进一步根周骨破坏的可能,因为其可能使种植体治疗复杂化或延后;单根牙 VRF 建议拔除;多根的根管治疗牙齿可考虑牙根切除或牙根截除作为拔除替代方案,并建议多学科治疗计划;目前没有“以牙根切除或截除处理根管治疗牙齿 VRF”的存留率资料,文中 10 年 90.6%、15 年 96.8% 是从牙周病患牙齿牙根切除结果外推|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「The prognosis is poor」「Prompt management is recommended as soon as diagnosis is reached to reduce the likelihood of acute AP symptoms and/or further periradicular bone breakdown, as this may complicate and/or delay dental implant treatment.」「Extraction is recommended in a single‐rooted tooth with a VRF」「In multi‐rooted RFT, root resection or root amputation may be considered as an alternative to extraction. A multi‐disciplinary approach is recommended in the treatment planning. There is no data on survival rates of root resection or root amputation for VRF in RFT; however, extrapolation from root resection on periodontally affected teeth has been reported to be 90.6% and 96.8% over 10 and 15 years, respectively」|caveat:90.6% 与 96.8% 为牙周病患牙齿的牙根切除存留率,原文明确说是外推,禁止作为 VRF 预后数字引用;本节建议前提为诊断已成立,与“怀疑但未确认”阶段不同。
  • F7|同一立场声明“未做根管治疗牙齿的 VRF”节:已报告发生率为 6% 至 37%,男性和 50 岁以上人群较多;若上述检查结果不明确,或需判断处置与拔除何者可行时,探查性手术可能有适应证;早期介入对限制 VRF 进展及邻近患根进一步骨破坏是必要的;单根牙建议拔除,多根牙可按 VRF 位置、高度和范围考虑完整或部分患根切除;目前支持有意再植与口外粘接处理 VRF 的证据有限;结论为未做根管治疗牙齿 VRF 的治疗策略证据有限,需要更多长期随访临床研究|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「The incidence of VRFs in non‐root‐filled teeth (NRFT) has been reported to be between 6% and 37%, with a predilection for males and patients over 50 years of age」「Exploratory surgery may be indicated if the above findings are inconclusive and/or the nature and feasibility of management versus extraction need to be determined」「Extraction of single‐rooted teeth is recommended. Root resection (complete or partial) of the affected root may be an option in multirooted teeth depending on the position, level, and extent of the VRF.」「At present there is limited evidence to support intentional replantation and extraoral bonding for VRF.」「The current evidence on treatment strategies for VRFs in NRFT is limited; more clinical studies with long‐term follow‐up are needed.」|caveat:“6% 至 37%”的分母于原文未界定(可能指 VRF 病例中发生在未做根管治疗牙齿的比例,也可能是其他口径)。因此本卡不在正文引用该数字,只保留性别和年龄的定性描述;这是本卡刻意采取的限制,不是来源缺漏。
  • F8|同一立场声明“裂开牙”节:裂开牙是牙冠裂纹进展扩大,导致牙冠和牙根机械性失败、牙齿完全纵向分离的结果;临床上断片完全分离或受压后分离,可有根尖周炎症状(含咬合痛、狭窄孤立的牙周探诊或牙齿松动);预后不佳,应考虑及时拔除以减少急性症状发展并限制骨丧失|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「The tooth fragments are completely separated or separated with pressure. There may be symptoms of AP, including pain on biting, a narrow, isolated periodontal probing, or tooth mobility.」「ST has an unfavourable prognosis, and timely extraction should be considered to minimise the development of acute symptoms and limit bone loss.」|caveat:原文也记载裂开牙患病率和表现文献稀少;本卡不陈述其发生频率。
  • F9|同一立场声明影像限制段及“CT 与 VRF 的通则考量”节:CBCT 不能可靠检出牙根内 VRF,因为影像分辨率不足以检出宽度通常为 50 至 100 μm 的裂纹;过度咬合力在裂牙、裂开牙和 VRF 病因中影响再怎么强调都不为过;应考虑对颌牙列(包括修复状态和咬合形态);为处理异常功能习惯,应考虑制作咬合稳定夹板和/或转诊相关专科|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「CBCT cannot reliably detect VRFs within the root due to the image resolution being insufficient to detect fractures that are typically 50‐100 μm in width」「The impact of excessive occlusal forces cannot be overemphasised in the aetiology of CT, ST, and VRF.」「Fabrication of occlusal stabilisation splints and/or referral to relevant specialists should be considered for the management of parafunctional habits」|caveat:咬合夹板和转诊为给临床医师的建议,且以有适应证为前提,不得读成对个别病人的处置指示;与 KM-DENTAL-50 卡 F5 部分同锚。
  • F10|同一立场声明裂牙处置与预后结论段:现有证据显示,活髓和根管治疗后裂牙以覆盖牙尖修复的结果令人鼓舞;早期处置、覆盖牙尖修复和不存在非牙髓来源的深牙周探诊深度,可提高裂牙处置存留率;5 mm 以上牙周探诊与较低存留率相关|来源 #1|confidence=verified|basis=clinical_guideline(同 F3 来源)|period=2025;检索日 2026-08-06|geo: universal|取回方式:同 F3(PMC 全文),本行不加 PMID 前缀|span:「Current evidence suggests encouraging outcomes for vital as well as endodontically treated CT restored with cuspal coverage restorations. Early management, cuspal coverage restorations, and absence of deep periodontal probing depth of non‐endodontic origin increase the survival rate of CT management.」「A 5 + mm periodontal probing is associated with reduced survival rates」|caveat:本栏对象为裂牙(CT)的修复决策,属 KM-DENTAL-50 卡主题范围;本卡只摘述一句以连接“牙尖断裂的修复方向”,不重写该卡内容。
  • F11|国际牙外伤学会(IADT) 2020 指引第一篇(断裂与脱位)Table 7 根折定义与临床所见:根折为累及牙本质、牙髓和牙骨质的牙根断裂,方向可为水平、斜向或两者组合;冠侧断片可能松动并移位,牙齿可能叩诊痛,牙龈沟可能出血,牙髓活力测试初期可能阴性(表示暂时性或永久性神经损伤);断裂可在牙根任何高度,未加拍其他角度影像时可能未检出|来源 #2|confidence=verified|basis=clinical_guideline(IADT 2020 指引一,Dent Traumatol 2020;36(4):314-330,DOI 10.1111/edt.12578)|period=2020 现行版(2026-08-06 以 `International Association of Dental Traumatology guidelines[ti]` 检索 PubMed,回传最新指引本体仍为 2020 年三篇,无更新版)|geo: universal|取回方式(可复现):以 ego-browser 打开 Wiley 开放获取全文 `https://onlinelibrary.wiley.com/doi/10.1111/edt.12578`,取 `document.body.innerText` 后逐字比对;本栏 span 取自全文而非 PubMed 摘要,故本行不加 PMID 前缀|span:「A fracture of the root involving dentin, pulp and cementum.」「The fracture may be horizontal, oblique or a combination of both.」「The coronal segment may be mobile and may be displaced」「Bleeding from the gingival sulcus may be seen」「Pulp sensibility testing may be negative initially, indicating transient or permanent neural damage」「Root fractures may be undetected without additional imaging」|caveat:共识指引,非随机试验结果;表列为医师检查所见,非病人自我判断项目。
  • F12|同一指引 Table 7 治疗栏:若有移位,冠侧断片应尽快复位并用影像确认;以被动弹性固定装置固定松动冠侧断片四周,若断裂位于牙颈部可能需要更久(最长四个月);牙颈部断裂有愈合潜力,因此冠侧断片(尤其不松动者)不应在急诊当次移除;急诊当次不应开始根管治疗;建议至少监测断裂愈合一年,并同时监测牙髓状态|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「If displaced, the coronal fragment should be repositioned as soon as possible.」「Stabilize the mobile coronal segment with a passive and flexible splint for 4 wk. If the fracture is located cervically, stabilization for a longer period of time (up to 4 mo) may be needed」「Cervical fractures have the potential to heal. Thus, the coronal fragment, especially if not mobile, should not be removed at the emergency visit」「No endodontic treatment should be started at the emergency visit」「It is advisable to monitor healing of the fracture for at least one year.」|caveat:“4 wk”“up to 4 mo”为固定装置佩戴期间,不是疗程总长,也不是任何预后承诺;复位和固定均为牙医师处置,本卡不描述操作方法,也不建议自行尝试。
  • F13|同一指引后续处置栏:牙髓坏死和感染可能后来发生,且通常只发生在冠侧断片,因此只需对冠侧断片做根管治疗;根折线常为斜向,根管长度判断有挑战,可能需根尖诱导成形;根侧断片很少有需治疗的病理改变;在牙根成熟、牙颈部断裂线位于牙槽嵴上方且冠侧断片非常松动的牙齿,很可能需移除冠侧断片,继以根管治疗及桩核冠修复,并可能需正畸牵引根侧断片、冠延长术、手术牵引甚至拔除作为未来治疗选择|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「Pulp necrosis and infection may develop later. It usually occurs in the coronal fragment only. Hence, endodontic treatment of the coronal segment only will be indicated.」「The apical segment rarely undergoes pathological changes that require treatment」「In mature teeth where the cervical fracture line is located above the alveolar crest and the coronal fragment is very mobile, removal of the coronal fragment, followed by root canal treatment and restoration with a post-retained crown will likely be required.」|caveat:原文四个条件(牙根成熟+牙颈部断裂+位于牙槽嵴上方+冠侧断片非常松动)为同时成立表述,禁止拆成单一条件推论“牙颈部断裂就需拔除”。
  • F14|同一指引 Table 7 随访与结果栏:临床和影像随访于四周(中段及根尖三分之一断裂者拆除固定)、六至八周、四个月(牙颈三分之一断裂者拆除固定)、六个月、一年,之后每年一次至少五年;有利结果为牙髓活力测试有反应(但数月内可能假阴性,不应只凭无反应就开始根管治疗)、断片间出现修复征象、冠侧断片动度正常或略高于生理范围;不利结果为有症状、冠侧断片脱出和/或过度松动、断裂线出现透射影、牙髓坏死感染合并断裂线炎症|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「Positive response to pulp sensibility testing; however, a false negative response is possible for several months. Endodontic treatment should not be started solely on the basis of no response to pulp sensibility testing」「Signs of repair between the fractured segments」「Extrusion and/or excessive mobility of the coronal segment」「Pulp necrosis and infection with inflammation in the fracture line」|caveat:随访时程为指引给牙医师的安排建议,实际复诊按个人状况调整。
  • F15|同一指引 Table 2 至 Table 4(牙冠断裂):只断牙釉质时,断片仍在可再粘接,或按断裂范围和位置修整边缘或用复合树脂修复;牙釉质和牙本质断裂(未露髓)时,断片完整可先在水或生理盐水中回水 20 分钟后再粘接,并以玻璃离子体或粘接剂加复合树脂覆盖暴露牙本质;露髓的复杂牙冠断裂,牙根未成熟且根尖开放者应保留牙髓、建议部分牙髓切除术或盖髓术促进牙根继续发育;牙根已成熟者,保守牙髓处置(如部分牙髓切除术)也为优先治疗;三张表都说应评估是否合并脱位性损伤或根折,尤其有压痛时|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「If the tooth fragment is available and intact, it can be bonded back on to the tooth. The fragment should be rehydrated by soaking in water or saline for 20 min before bonding」「In patients where teeth have immature roots and open apices, it is very important to preserve the pulp. Partial pulpotomy or pulp capping are recommended in order to promote further root development」「Conservative pulp treatment (eg, partial pulpotomy) is also the preferred treatment in teeth with completed root development」「Evaluate the tooth for a possible associated luxation injury or root fracture, especially if tenderness is present」|caveat:牙髓处置材料与术式为医师决策,本卡不描述操作方法,不建议自行处理断片。
  • F16|同一指引 Table 5 与 Table 6(冠根折):冠根折为累及牙釉质、牙本质和牙骨质的断裂,通常延伸到牙龈缘以下;治疗计划确定前应尝试将松动断片暂时固定到邻牙或不动断片;未来治疗选择包括正畸牵引根侧或不动断片后修复(可能还需牙周整形手术)、手术牵引、牙髓坏死感染时的根管治疗和修复、牙根埋入、有意再植(可含牙根旋转)、拔除、自体牙移植;治疗计划部分取决于病人年龄和预期配合度|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「(Note: Crown-root fractures typically extend below the gingival margin)」「Until a treatment plan is finalized, temporary stabilization of the loose fragment to the adjacent tooth/teeth or to the non-mobile fragment should be attempted」「The treatment plan is dependent, in part, on the patient's age and anticipated co-operation.」「Orthodontic extrusion of the apical or non-mobile fragment, followed by restoration」|caveat:选项清单是指引给医师的列举,不代表任何选项适用于个别病人;本卡不排序优劣。
  • F17|同一指引影像章节:不同垂直和/或水平角度影像有助检出根折;CBCT 可增强牙外伤可视化,尤其根折、冠/根断裂和侧方脱位,可帮助判断断裂位置、范围和方向;使用游离辐射的指导原则是该影像是否可能改变处置|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「Cone beam computerized tomography (CBCT) provides enhanced visualization of TDIs, particularly root fractures, crown/root fractures, and lateral luxations. CBCT helps to determine the location, extent, and direction of a fracture.」「A guiding principle when considering exposing a patient to ionizing radiations (eg, either 2D or 3D radiographs) is whether the image is likely to change the management of the injury.」|caveat:本栏 CBCT 效用陈述限于外伤性断裂可视化,与 F9/F21/F22 所述“CBCT 检出垂直性牙根断裂的限制”为不同临床问题,禁止互相套用。
  • F18|同一指引导论、牙髓保存章节与免责声明:不论牙齿成熟与否,都应尽力保存牙髓;对未成熟恒牙尤其重要,以容许牙根继续发育和根尖形成;IADT 未且无法对遵循指引可获得良好结果作担保|来源 #2|confidence=verified|basis=clinical_guideline(同 F11 来源)|period=2020 现行版|geo: universal|取回方式:同 F11(Wiley 全文),本行不加 PMID 前缀|span:「Every effort should be made to preserve the pulp, in both mature and immature teeth.」「The IADT does not, and cannot, guarantee favorable outcomes from adherence to the Guidelines.」|caveat:免责声明为指引原文;本卡合规注记转述时采用“不作担保”措辞,不作疗效承诺。
  • F19|系统性回顾与荟萃分析(根管治疗牙齿 VRF 的相关临床表现及风险因素;PROSPERO CRD42022354108;2022 年 10 月检索 MEDLINE/EMBASE/Scopus/Web of Science;以 Newcastle-Ottawa 量表评估偏倚风险):纳入 14 个来源、2877 颗牙(489 颗有 VRF、2388 颗无 VRF);瘘管(优势比 4.87,95% 置信区间 1.58 至 15.0)、牙周探诊深度增加(13.24,5.44 至 32.22)、肿胀或脓肿(2.86,1.74 至 4.70)、叩诊压痛(1.76,1.18 至 2.61)均与 VRF 存在显著相关;所评估风险因素(性别、牙齿类型、牙齿位置、桩、间接修复体、根管充填根尖延伸)都未与 VRF 显著相关|来源 #3|confidence=verified|basis=peer_reviewed(PMID 37307871,系统性回顾与荟萃分析)|period=2023(检索至 2022-10);版本时效已查——2026-08-06 以 `vertical root fracture[tiab] AND (systematic review[pt] OR meta-analysis[pt]) AND 2024:2026[dp]` 检索回传 2 篇,均为体外抗断裂力和断片再粘接主题,非同题更新版;本篇为当前最新的同题系统性回顾;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「Fourteen sources reporting on 2877 teeth (489 with VRF and 2388 without VRF) were included in the meta-analyses.」「the presence of sinus tracts (OR = 4.87; 95% confidence interval [CI], 1.58-15.0), increased periodontal probing depths (OR = 13.24; 95% CI, 5.44-32.22), swelling/abscess (OR = 2.86; 95% CI, 1.74-4.70), and tenderness to percussion (OR = 1.76; 95% CI, 1.18-2.61) were significantly associated with the presence of a VRF」「None of the assessed risk factors (sex, type of teeth, tooth location, posts, indirect restoration, and apical extension of the root canal filling) were found to be significantly associated with the presence of a VRF」|caveat:优势比是“有该表现者出现 VRF 的相对优势”,不是发生率、不是阳性预测值,禁止读成“有瘘管就是根裂”。 纳入研究为临床研究合并,异质性和偏倚风险见原文。
  • F20|病例对照研究(以手术诊断为基准的根管治疗牙齿 VRF 患病率及风险因素;2005 至 2022 年 411 颗接受牙髓外科手术的根管治疗牙齿中,分析 130 例 VRF 和随机选取 260 例对照;以多重插补处理缺失值,以稳健标准误的逻辑回归处理同一病人多颗牙聚集):VRF 患病率 31.63%;显著风险因素有年龄(校正优势比 1.02)、牙周探诊深度 ≥5 mm(2.37)、孤立根侧透射影(4.05)、光晕状透射影(2.70)、根管过度充填(2.11)、根管空间与牙根宽度比大于三分之一(1.52);有桩牙中桩空间与牙根宽度比大于三分之一者风险上升(未校正优势比 2.46)|来源 #4|confidence=verified|basis=peer_reviewed(PMID 40769327,病例对照研究)|period=2026 年 1 月号(线上先行 2025-08-05);检索日 2026-08-06;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「From 411 RFT that underwent endodontic surgery (2005-2022), 130 VRF cases and 260 randomly selected controls were analyzed.」「VRF prevalence was 31.63% among RFT undergoing endodontic surgery.」「Significant risk factors included age (adjusted odds ratio [aOR] = 1.02), probing depth ≥5 mm (aOR = 2.37), isolated perilateral radiolucency (aOR = 4.05), halo radiolucency (aOR = 2.70), overfilled root canal (aOR = 2.11), and root canal space-to-root-width ratio >1/3 (aOR = 1.52).」|caveat:31.63% 的分母是“接受牙髓外科手术的根管治疗牙齿”,属于高度选择的外科人群,禁止外推至所有根管治疗牙齿或一般人群;单一机构回溯资料,属于研究层级比例,非个人风险估计。
  • F21|系统性回顾与荟萃分析(以直接目视为参考标准,评估 CBCT 诊断根管充填牙齿 VRF 的准确度;检索至 2020-06;以 QUADAS-2 评估偏倚风险;纳入 8 篇):合并灵敏度 0.78(95% 置信区间 0.64 至 0.88)、特异度 0.80(0.63 至 0.91)、准确度 0.86(0.83 至 0.89);GRADE 评估灵敏度证据质量低、特异度中等;结论为与直接目视相比,CBCT 仍不是诊断根管充填牙齿 VRF 的好工具|来源 #5|confidence=verified|basis=peer_reviewed(PMID 33984375,系统性回顾与荟萃分析)|period=2021(检索至 2020-06);版本时效已查——同题另有 2023 年系统性回顾(F22),两者纳入标准不同(本篇限临床研究且以直接目视为参考标准),本卡两者并列、不择一;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「CBCT imaging had a pooled sensitivity and specificity of 0.78 (95% confidence interval [CI], 0.64-0.88) and 0.80 (95% CI, 0.63-0.91), respectively, and an accuracy of 0.86 (95% CI, 0.83-0.89).」「Evidence from this systematic review and meta-analysis indicates that CBCT imaging is still not a good tool for diagnosing VRFs in root-filled teeth compared with direct visualization.」|caveat:诊断准确度指标随受检人群患病率而异,不能换算成个人检查结果解读。
  • F22|系统性回顾(CBCT 检出根管治疗牙齿 VRF 的诊断效能;检索 2000 至 2022 年 Web of Science/PubMed/Cochrane/SCOPUS/Embase;纳入 20 篇):无桩且有根管充填材料时,CBCT 灵敏度与特异度均值分别为 71.50 ± 22.19% 与 75.64 ± 19.41%;结论为因灵敏度低、研究间异质性显著且缺乏活体研究,仍需进一步临床研究确认 CBCT 作为检出工具的最佳效能|来源 #6|confidence=verified|basis=peer_reviewed(PMID 37264339,系统性回顾)|period=2023(检索 2000 至 2022);检索日 2026-08-06;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「The final analysis included 20 papers that satisfied the eligibility requirements.」「Further clinical research is needed to validate the optimum efficiency of CBCT as a diagnostic technique for detecting VRFs in teeth that have had endodontic treatment, given the low sensitivity, significant heterogeneity of studies, and lack of in-vivo studies on the subject.」|caveat:该回顾纳入者多为体外研究,其准确度数字不等于临床情境表现;本卡只引用其结论方向和纳入篇数。
  • F23|回溯性长期临床研究(恒牙外伤后横向根折的初期愈合形态、预测因素和长期预后;以影像评估断裂线愈合与不愈合事件;愈合分为硬组织、结缔组织、结缔组织加骨,不愈合为肉芽组织介入;以竞争风险存活分析和 Fine & Gray 次分布回归评估):短期愈合 61.4%,强烈受冠侧断片是否合并损伤及合并类型影响;合并牙冠断裂(次分布风险比 24.38,95% 置信区间 3.16 至 188.3)、合并有移位的脱位性损伤(10.58,1.37 至 81.9)和亚脱位(9.66,1.14 至 81.7)者短期更容易不愈合;长期愈合率 75.9%,多数为骨和结缔组织介入;临床意义段记载外伤后横向根折预后正向,支持在考虑更激进治疗前采取较保守做法|来源 #7|confidence=verified|basis=peer_reviewed(PMID 38467867,回溯性长期临床研究)|period=2024;版本时效已查——2026-08-06 以 `root fracture[tiab] AND healing[tiab] AND (systematic review[pt] OR meta-analysis[pt])` 检索回传 0 条,本题目前无同题系统性回顾可用,本篇为可获得的较高层级临床证据;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「Radiographic findings showed 61.4% of healing in the short-term being strongly influenced by the presence and type of concomitant injuries to the coronal fragment.」「The healing rate in the long-term was of 75.9%, most of them with interposition of bone and connective tissue.」「Post-traumatic transversal root fractures have a positive prognosis supporting therefore, a more conservative approach for these teeth before considering more radical treatments.」|caveat:单一机构回溯研究,61.4% 和 75.9% 是研究层级影像愈合比例,不是个人预后估计,也不是“牙齿保留率”。 风险比置信区间极宽(如 3.16 至 188.3),代表估计不精确。
  • F24|系统性回顾(正畸强制牵引用于外伤后龈下牙体组织缺损的恒牙;检索 MEDLINE/Cochrane Library/EMBASE 共 2757 篇符合初筛,纳入 13 篇全文:1 篇随机对照试验、1 篇前瞻性临床试验、2 篇回溯性队列研究、9 篇病例系列):正畸牵引平均速度每周 1.5 mm,疗程四至六周后进入保持期;结论为现有证据显示正畸牵引对原判定无法修复的恒牙是可行前置处置选择,且牙根吸收似乎不是相关不良反应|来源 #8|confidence=verified|basis=peer_reviewed(PMID 34886307,系统性回顾)|period=2021;检索日 2026-08-06;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「Thirteen full-text papers were included: one RCT, one prospective clinical trial, two retrospective cohort studies, and nine case series.」「The mean extrusion rate of OFE was 1.5 mm a week within a four to six weeks treatment period followed by retention.」「The current state of the evidence suggests that OFE is a feasible pre-treatment option for non-restorable permanent teeth.」|caveat:13 篇中有 9 篇为病例系列,证据层级偏低;“可行”是作者对现有证据的描述,不是成功率;是否适用由牙医师按个别状况评估。
  • F25|系统性回顾(前牙复杂冠根折断片再粘接的方法和结果;检索 PubMed/Web of Science/Embase/Scopus/Google Scholar):纳入 12 篇病例报告和 2 篇病例系列;11 篇在再粘接前先暴露断裂线;除 1 例采用保守牙髓处置外均做根管治疗;85% 病例以桩作为修复一部分;纳入文章治疗结果均良好,随访期三个月至七年;结论为临床条件有利时,断片再粘接可视为可行治疗选择|来源 #9|confidence=verified|basis=peer_reviewed(PMID 32813931,系统性回顾)|period=2021(线上 2020-09-09);检索日 2026-08-06;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「Twelve case reports and two case series were selected for this review after applying the inclusion and exclusion criteria.」「A post was used as part of the restoration in 85% of the cases.」「Treatment outcomes were favorable in all the included articles and the follow-up period ranged from three months to seven years.」「Fragment reattachment after complicated crown-root fractures of anterior teeth can be considered as a viable treatment option if the clinical conditions are favorable.」|caveat:纳入者全为病例报告和病例系列,这类文献有只报告成功案例的倾向;“结果都良好”禁止读成成功率。
  • F26|前瞻性队列研究(瑞典公立牙科 20 家院所连续登记拔牙原因,并以五年电子病历随访是否进行修复重建):133 位病人(61 男、72 女;平均年龄 54.0 岁,标准差 15.8)接受拔牙;最常见原因为牙髓病理(36.8%)与断裂(24.8%);61 位病人之前接受过牙髓治疗,三分之一拔除牙齿曾根管充填;35 颗牙做修复重建,其中最常见为可摘义齿(45.7%)|来源 #10|confidence=verified|basis=peer_reviewed(PMID 42034624,前瞻性队列研究)|period=2026(发表日 2026-04-25,早于本卡日期 2026-08-06);检索日 2026-08-06;esummary 查 pubtype 无 Retracted Publication|geo: universal|span:「A total of 133 patients (61 men and 72 women; mean age 54.0 years, SD = ± 15.8) underwent extractions.」「Endodontic pathology (36.8%) and fractures (24.8%) were the most common reasons.」「Sixty-one patients had previous endodontic treatment, and one-third of extracted teeth were root-filled.」|caveat:单一瑞典郡的公立牙科人群、八周登记期、样本 133 人,属于当地服务形态统计,禁止外推为台湾或全球拔牙原因分布。 “断裂”在研究里的定义涵盖各类断裂,未细分本卡三种类型。
  • F27|Cochrane 系统性回顾(成人症状性根尖周炎和急性根尖脓肿的全身性抗生素)背景段:临床指引建议第一线治疗应以局部手术性措施清除炎症或感染来源;全身性抗生素目前只建议用于有感染扩散征象(蜂窝织炎、淋巴结受累、弥漫性肿胀)或全身影响(发热、倦怠)时|来源 #11|confidence=verified|basis=peer_reviewed(PMID 38712714,Cochrane 系统性回顾 CD010136.pub4)|period=2024(检索至 2022-11);版本链已查(CD010136 pub4 为现行版,原文标示更新自 2018 年 pub3);2026-08-06 以 esummary 复查 pubtype 无 Retracted Publication;同 KM-DENTAL-50/33 卡锚|geo: universal|span:「systemic antibiotics are currently only recommended for situations where there is evidence of spreading infection (cellulitis, lymph node involvement, diffuse swelling) or systemic involvement (fever, malaise)」|caveat:本卡只引用此句作为“何时代表情况已超出局部”的红旗判准,不作任何用药建议,也不提供药名与剂量。
  • F28|教科书条目(深颈部感染):症状常来自对呼吸道、神经或消化道的局部压迫效应,包括颈部肿胀、吞咽困难、发声困难和张口受限;临床表现常伴发热、颈部疼痛和呼吸窘迫|来源 #12|confidence=verified|basis=textbook(PMID 30020634,StatPearls 条目)|period=条目版本 2026-01;检索日 2026-08-06;同 KM-DENTAL-50 卡锚|geo: universal|span:「Symptoms often result from local pressure effects on the respiratory, nervous, or gastrointestinal tracts, including neck swelling, dysphagia, dysphonia, and trismus.」「often involving fever, neck pain, and respiratory distress」|caveat:深颈部感染来源不限于牙齿;本栏只用来界定“需立即就医评估”的征象范围,不作诊断。
  • F29|2017 年世界工作坊分类共识报告(牙周炎工作组):牙周脓肿定义为急性病灶,特征为牙周袋/龈沟牙龈壁内局部脓液积聚、组织快速破坏,并与全身播散风险相关;牙髓-牙周联合病灶定义为特定牙齿上牙髓和牙周组织之间的病理性交通,可为急性或慢性|来源 #13|confidence=verified|basis=clinical_guideline(PMID 29926951,共识报告/分类)|period=2018;检索日 2026-08-06;同 KM-DENTAL-50 卡锚|geo: universal|span:「Periodontal abscesses are defined as acute lesions characterized by localized accumulation of pus within the gingival wall of the periodontal pocket/sulcus, rapid tissue destruction and are associated with risk for systemic dissemination.」「Endodontic-periodontal lesions, defined by a pathological communication between the pulpal and periodontal tissues at a given tooth, occur in either an acute or a chronic form」|caveat:属临床诊断框架,须由牙医师依完整检查判定,本卡不做分类判读。
  • F30|台湾《全民健康保险法》第 51 条第 11 款:“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。”不列入本保险给付范围|来源 #14|confidence=verified(2026-08-06 以 ego-browser 打开全国法规资料库该条页面,标题逐字为“全民健康保險法§51-全國法規資料庫”,条文逐字比对;同 `km-compliance/VERIFIED-FACTS.md` 既有锚)|basis=law|period=现行条文(页面标示法规整编资料截止日:民国 115 年 07 月 31 日)|geo: TW|caveat:个别健保给付以健保署现行公告为准;商业保险给付依保单条款而定。本卡不作给付判定,也不提供金额。
  • F31|台湾《医疗法》第 87 条:“广告内容暗示或影射医疗业务者,视为医疗广告。医学新知或研究报告之发表、病人卫生教育、学术性刊物,未涉及招徕医疗业务者,不视为医疗广告。”|来源 #15|confidence=verified(2026-08-06 以 ego-browser 实测,页面标题逐字为“醫療法§87-全國法規資料庫”,条文逐字比对)|basis=law|period=现行条文|geo: TW|caveat:本条只用于界定本站发布身份(卫生教育而非广告),不涉及本卡任何医学内容。
  • F32|政府数据开放平台资料集“臺北市醫療收費標準”,提供机关为臺北市政府衛生局;另据 `km-compliance/VERIFIED-FACTS.md` 已验证结论,健保署“醫材比價網”两轨查询类别都不含牙科,牙科自费项目无法由该网查证|来源 #17|confidence=verified(2026-08-06 以 ego-browser 实测,页面标题逐字为“臺北市醫療收費標準 | 政府数据开放平台”,提供机关字段逐字为“臺北市政府衛生局”,诠释资料更新时间 2026-07-13)|basis=official_statement|period=资料集现况|geo: TW|caveat:单一县市例证,其他县市收费标准页面放量前须逐一补验;醫材比價網结论为 OP 2026-08-05 亲验的跨卡锚,本卡沿用不重验。
  • F33|台湾《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。”|来源 #15|confidence=verified(沿用 `km-compliance/VERIFIED-FACTS.md` 已验锚:全国法规资料库实测 HTTP 200+逐字;本卡未重验该条页面)|basis=law|period=现行条文|geo: TW|caveat:条文引述,非法律意见;本卡不提供法律或理赔见解。
  • F34[结构性整理]|证据缺口声明:本站于 2026-08-06 以 PubMed E-utilities 检索,`root fracture[tiab] AND healing[tiab] AND (systematic review[pt] OR meta-analysis[pt])` 回传 0 条,即外伤性根折愈合结果目前无同题系统性回顾可引;本卡改以可取得的回溯性长期研究(F23)陈述并标明层级。`vertical root fracture[tiab] AND (systematic review[pt] OR meta-analysis[pt]) AND 2024:2026[dp]` 回传 2 篇且均非同题(体外抗断裂力、断片再粘接),故 F19 的 2023 年回顾为当前最新。另本卡红旗清单限 F27/F28/F29/F19/F4/F14 列举征象,来源未列者不自行增列;本卡不提供自我判断法、药名与剂量,也不列任何金额|来源 #18|confidence=n/a|basis=editorial_framework|period=2026-08-06|geo: universal|caveat:检索限于 PubMed 与上述检索式,未取得不等于已被推翻;本栏为编辑性陈述,不得标为待验证 claim。

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 span;ESE 立场声明以 `efetch db=pmc id=11812625` 取得开放获取全文后去标签逐字比对;IADT 指引为 Wiley 开放获取文章,以 ego-browser 打开后取 innerText 逐字比对(这两者 span 不在 PubMed 摘要内,故对应 F-Unit 不标 PMID 前缀,避免机器闸门拿错文本比对);台湾法规和官方页面一律以 ego-browser 实载后逐字比对。

  1. Duncan HF, et al.(ESE 立场声明)Position statement on longitudinal cracks and fractures of teeth. Int Endod J. 2025;58:379-390. PMID 39840523;全文 PMC11812625
  2. 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
  3. Haupt F, Wiegand A, Kanzow P. Risk Factors for and Clinical Presentations Indicative of Vertical Root Fracture in Endodontically Treated Teeth: A Systematic Review and Meta-analysis. J Endod. 2023;49(8):940-952. PMID 37307871
  4. Promchouy P, Chotvorrarak K, Osiri S. Prevalence of Vertical Root Fractures in Root Filled Teeth and Their Clinical and Radiographic Risk Factors. J Endod. 2026;52(1):68-78. PMID 40769327
  5. PradeepKumar AR, et al. Diagnosis of Vertical Root Fractures by Cone-beam Computed Tomography in Root-filled Teeth with Confirmation by Direct Visualization: A Systematic Review and Meta-Analysis. J Endod. 2021;47(8):1198-1214. PMID 33984375
  6. Diagnostic efficacy of cone-beam computed tomography for detection of vertical root fractures in endodontically treated teeth: a systematic review. BMC Med Imaging. 2023;23:75. PMID 37264339
  7. Pedrosa NOM, et al. Healing and long-term prognosis of root-fractured permanent teeth: a retrospective longitudinal study. Clin Oral Investig. 2024;28(4):209. PMID 38467867
  8. Reichardt E, et al. Orthodontic Forced Eruption of Permanent Anterior Teeth with Subgingival Fractures: A Systematic Review. Int J Environ Res Public Health. 2021;18(23):12580. PMID 34886307
  9. Khandelwal P, et al. Fragment reattachment after complicated crown-root fractures of anterior teeth: A systematic review. Dent Traumatol. 2021;37(1):37-52. PMID 32813931
  10. Persson S, et al. Reasons for tooth extraction in a Swedish county dental service: a 5-year longitudinal cohort study with focus on endodontic pathology. BDJ Open. 2026;12(1):41. PMID 42034624
  11. Cope AL, et al. Systemic antibiotics for symptomatic apical periodontitis and acute apical abscess in adults. Cochrane Database Syst Rev. 2024;5(5):CD010136. PMID 38712714
  12. Almuqamam M, et al. Deep Neck Infections. StatPearls. PMID 30020634
  13. Papapanou PN, et al. Periodontitis: Consensus report of workgroup 2 of the 2017 World Workshop. J Periodontol. 2018;89 Suppl 1:S173-S182. PMID 29926951
  14. 台湾全民健康保险法第 51 条(全国法规资料库)
  15. 台湾医疗法第 87 条(全国法规资料库)
  16. 内部数据:`gsc-full-20260804/__web__full.tsv`(查询词“牙根断裂”可逐列对账)
  17. 政府数据开放平台:臺北市醫療收費標準(提供机关:臺北市政府衛生局)
  18. 编辑框架与证据缺口:本站三路分流结构和 PubMed 检索缺口记录(无外部来源,标注为结构性整理)

内部引用链

  • 牙齿有裂纹但还没断、咬东西会痛:咬东西会痛,是牙裂还是咬合出问题?(KM-DENTAL-50)
  • 牙痛的整体形态分流:牙痛怎么办?蛀牙痛是什么感觉?(KM-DENTAL-33)
  • 牙齿整颗掉出来的急症现场处置:牙齿突然掉了一颗怎么办?(KM-DENTAL-30)
  • 根管治疗是什么、要跑几次:根管治疗(抽神经)是什么?要跑几次?(KM-DENTAL-18)
  • 牙齿保不住之后补不补、怎么决定:缺牙一定要种牙吗?没钱补怎么办?(KM-DENTAL-35)
  • 牙冠重做费用怎么问、报价单怎么读:做一颗牙冠(假牙牙套)要多少钱?(KM-DENTAL-11)
发布闸门提醒:本卡为 draft。四语(zh-Hans/en/ja)未产前不得进入 km_entries;本卡为症状分级卡且含红旗判准,依 ANK-DENTAL-SPEC 审核链第 5 层需 GM 第三意见专审(红旗完整性、三路分流一致性、区间端点与分母限定、绝对化措辞)后才可进入发布流程。挂载栏按队列页诊所补题表“牙根断裂”列,topic_id 为 C 序列,机器闸门挂载检查(只比对 KM-DENTAL-<数字>)不会触发,须人工核对。

FAQ

牙根断了,是不是一定要拔?
**不一定,答案取决于哪一种断裂。** 外伤造成的横向或斜向根折,IADT 处置是复位加固定,并明确写不松动的冠侧断片不应在急诊当次移除 [F12];一份单一机构回溯研究中,这类牙齿长期影像愈合比例为 75.9%,那是研究层级比例,不是任何一颗牙的个人预后估计 [F23]。冠根折有整排未来治疗选择,拔除只是其中一个 [F16]。垂直性牙根断裂方向相反:ESE 写其预后不佳,单根牙建议拔除,多根牙可考虑牙根切除或截除 [F6]。实际治疗方式和效果因人而异,须由牙医师按断裂位置、范围、剩余牙体组织和牙周状况评估 [F2]。
歯根が折れたら、必ず抜歯ですか?**必ずではなく、どの型の破折かで答えが変わります。** 外傷性の横・斜め歯根破折に対する IADT の処置は整復と固定で、動揺しない歯冠側破折片を救急受診時に除去すべきでないと明記しています [F12]。単一施設後ろ向き研究でこの型の長期画像治癒割合は 75.9% でしたが、これは研究レベルの割合であり、個々の歯の予後推定ではありません [F23]。歯冠歯根破折には一組の将来治療選択肢があり、抜歯はその一つです [F16]。垂直性歯根破折は逆方向で、ESE は予後不良、単根歯には抜歯推奨、多根歯には根切除または根截除の考慮を記します [F6]。実際の治療と結果は個人により異なり、破折位置・範囲、残存歯質、歯周状態を歯科医師が評価します [F2]。
If the root has fractured, does it definitely have to be extracted?**Not necessarily; the answer depends on the type of fracture.** For a traumatic transverse or oblique root fracture, IADT management is repositioning and splinting, and it specifically says a non-mobile coronal fragment should not be removed at the emergency visit [F12]. In a single-center retrospective study, long-term radiographic healing in this type of tooth was 75.9%; that is a study-level proportion, not a personal prognosis for any particular tooth [F23]. A crown-root fracture has a whole range of future treatment options, of which extraction is only one [F16]. VRF points in the opposite direction: ESE says its prognosis is poor, recommends extraction for a single-rooted tooth, and allows consideration of root resection or amputation in a multi-rooted tooth [F6]. Actual treatment and outcomes vary by person and require a dentist's assessment of fracture location, extent, remaining tooth structure, and periodontal condition [F2].
什么情况必须立即就医、不能等?
**若出现颈部肿胀、颈部疼痛、吞咽困难、声音改变、张口受限或呼吸窘迫,请不要等待,立即就医评估 [F2][F28]。**
どのような時は待たずに直ちに受診すべきですか?**頸部腫脹、頸部痛、嚥下困難、声の変化、開口制限、呼吸窮迫がある場合は待たずに、直ちに医療評価を受けてください [F2][F28]。**
When should I seek immediate care rather than wait?**Do not wait if you develop neck swelling, neck pain, difficulty swallowing, voice change, restricted mouth opening, or respiratory distress; seek immediate medical assessment [F2][F28].**
为什么 X 光片看不到我的根裂,医师却说很可能是?
**因为影像本来就不容易照出这种裂纹。** ESE 立场声明写 CBCT 不能可靠检出牙根内 VRF,原因是分辨率不足以检出宽度通常为 50 至 100 μm 的裂纹 [F9]。系统性回顾的合并结果也显示,CBCT 对根管充填牙齿 VRF 的灵敏度为 0.78、特异度为 0.80,作者结论是与直接目视相比,它仍不是好诊断工具 [F21]。因此医师会把临床线索(瘘管、孤立而深窄的牙周袋、叩诊压痛)与影像一起看,必要时以探查性手术确认 [F19][F4][F7]。
X 線に根の亀裂が写らないのに、歯科医師が可能性が高いと言うのはなぜ?**画像はこの種の亀裂をそもそも捉えにくいからです。** ESE は CBCT が通常 50~100 μm の裂け目を捉えるには分解能不足で、歯根内 VRF を信頼して検出できないと記載します [F9]。系統的レビューの統合結果も、根管充填歯の VRF に対する CBCT の感度 0.78、特異度 0.80 を示し、直接視認と比べなお良い診断手段ではないとの結論です [F21]。そのため歯科医師は、瘻孔、孤立した深く狭い歯周ポケット、打診圧痛などの臨床手掛かりと画像を併せて判断し、必要なら探索的手術で確認します [F19][F4][F7]。
Why does my X-ray not show a root crack when the dentist says it is likely?**Because imaging is inherently poor at showing this kind of crack.** The ESE position statement says CBCT cannot reliably detect VRF within the root because its resolution cannot detect cracks typically 50 to 100 μm wide [F9]. The pooled systematic-review findings also give CBCT sensitivity of 0.78 and specificity of 0.80 for VRF in root-filled teeth, and the authors conclude that compared with direct visualization it is still not a good diagnostic tool [F21]. A dentist therefore considers clinical clues (sinus tract, an isolated deep narrow periodontal pocket, tenderness to percussion) together with imaging and may use exploratory surgery if needed [F19][F4][F7].

来源锚定

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km 編輯部・《牙根断裂会怎样?一定要拔牙吗?|證據鏈》・IDAEO 知識庫・2026-08-13・https://km.idaeo.ai/post/reports/dental-root-fracture-evidence

更新 2026-08-13T14:17:41.064Z · server-rendered · four-language · IDAEO 知識庫