Abstract：
Cervical enamel projections (CEPs) represent a unique developmental and anatomical anomaly wherein the enamel structure extends apically beyond the cemento-enamel junction of the tooth. In this scoping review, the existing literature on CEPs was evaluated to delineate their characteristics, prevalence, predilection for specific teeth and surfaces, clinical significance, and management approaches. Searches were conducted on MEDLINE (PubMed), Cochrane Library, and Embase databases using the keywords \"enamel projection(s)\" or \"ectopic enamel.\" In total, 24 studies meeting inclusion criteria were included in the review. The prevalence of CEPs varied widely (8.3%-85.1%), predominantly manifesting as grade I or grade III. Mandibular first and second molars exhibited a higher incidence of CEPs, with a notable predilection for buccal surfaces. The consensus in most studies was that CEPs are associated with localized periodontal diseases. Recommendations inclined toward the removal of ectopic enamel during periodontal surgery to enhance periodontal attachment formation. However, decision-making should involve careful consideration of the benefits and drawbacks based on individual circumstances.
摘要：
宫颈釉质突起（CEP）代表一种独特的发育和解剖学异常，其中釉质结构在顶部延伸超过牙齿的牙骨质-釉质交界处。在这次范围审查中，对CEP的现有文献进行了评估，以描述它们的特征，患病率,对特定牙齿和表面的偏爱，临床意义,和管理方法。在MEDLINE（PubMed）上进行了搜索，科克伦图书馆,和Embase数据库使用关键字“搪瓷投影”或“异位搪瓷”。“总的来说，24项符合纳入标准的研究纳入审查。CEP的患病率差异很大（8.3％-85.1％），主要表现为I级或III级。下颌第一磨牙和第二磨牙表现出更高的CEP发生率，对颊表面有明显的偏爱。大多数研究的共识是CEP与局部牙周病有关。建议倾向于在牙周手术中去除异位牙釉质以增强牙周附着形成。然而,决策应根据个人情况仔细考虑利弊。
