- 期刊
異位性牙釉質（牙釉珠及齒頸部牙釉質突起）與牙周破壞：病例系列
Ectopic Enamel Deposition (The Enamel Pearl and The Cervical Enamel Projection) and Periodontal Destruction: A Case Series
摘要
牙周病治療最主要目標即是去除牙齦下牙菌斑及牙結石，然而治療的同時須留意一些牙齒發育上的變異或缺陷，可能會成為牙菌斑蓄積的溫床進而造成或加劇牙周病的破壞，甚至影響治療的成效及牙齒預後。本文為兩個異位性牙釉質，分別為牙釉珠（enamel pearls）及齒頸部牙釉質突起（cervical enamel projections, CEPs）造成的局部嚴重牙周破壞的病例系列，經由非手術牙周治療後，進行牙周再生手術並移除異位性牙釉質，一年後追蹤整體牙周狀況改善且手術結果維持穩定。同時亦針對兩者的盛行率回顧相關文獻，其中發現CEPs的盛行率在東西方人種之間有相當大的落差，東方人遠高於西方人。期望在臨床治療時能謹慎處理這些會影響牙齒預後的局部因子。
並列摘要
The primary goal of periodontal treatment is to eliminate the subgingival biofilms and calculus. However, it should be kept in mind that there were some tooth development anomalies which have a significant impact on management and prognosis of the involved tooth or teeth, and also it was likely to serve as bacteria reservoir therefore induce or progress the periodontal destruction. This case series consists of two cases of localized periodontal breakdown associated with ectopic enamel deposition, one is enamel pearl and the other is cervical enamel projection. After gone through non-surgical periodontal treatment, these involved teeth were treated with regeneration therapy and the ectopic enamel was removed surgically. At 1 year follow up, the overall periodontal status were improved a lot and the treatment outcomes were stable. We also reviewed related articles about the prevalence of the enamel pearls and CEPs. Among different racial, it was found that the prevalence of CEPs has a considerable difference between the East and the West. CEPs were more common in the East than the West. In clinical practice, we must pay more attention on these local factors which may influence the tooth prognosis.