亞洲人下顎大臼齒常見之形態變異於牙髓病和牙周病的考量

Morphological Variations in the Mandibular Molars of Asians: Endodontic and Periodontal Considerations

陳怡親(Yi-Chin Chen) ； 陳益貞(Yi-Chen Chen) ； 李亞芸(Ya-Yun Lee) ； 楊淑芬(Shue-Fen Yang)

《臺灣牙周病醫學會雜誌》 19卷2期 (2014/06) Pp. 109-116

https://doi.org/10.6121/TAP.2014.19.2.04

摘要

牙齒形態上的變異，可能會影響到牙科治療的計畫、步驟及結果；早期關於牙齒形態的研究，多為西方的統計數據，然而近年隨著東方牙科醫療的發展及進步，發現亞洲人的牙齒形態具有其獨特變異性。舉例來說：亞洲人的下顎第一大臼齒的遠心舌根（disto-lingual root）、下顎第二大臼齒的C型牙根（C-shaped root），此兩種牙齒形態變異在亞洲人種中的發生比例較西方人高，治療也較為困難，臨床上逐漸受到重視。本文藉當代文獻回顧，深入探討此兩種牙齒形態變異在構造上的特性，並歸納其於牙髓病和牙周病的考量。

關鍵字

牙齒形態變異 ； 遠心舌根 ； C型牙根 ； 亞洲人

並列摘要

Morphological variations of the mandibular molars may affect dental treatment plans and the prognosis after treatment. Most previous studies were been based on Western populations. Recent studies targeting the dental morphology of Asians have shown that unique morphological variations are presented in Asians. These morphological variations include a higher prevalence of mandibular first molar with a disto-lingual root and of mandibular second molar with a C-shaped root, compared to those in Western countries. These morphological variations will have an impact on endodontic and periodontal treatment planning and patient prognosis.This article provides a review of the current literature and describes the morphological characteristics of mandibular molars with a disto-lingual root and with a C-shaped root. This information can be used to pinpoint areas that need to be taken into the consideration in relation to endodontics and periodontics.

並列關鍵字

morphological variations ； disto-lingual root ； C-shaped root ； Asians