CAJ | 학술논문

本文根据离体牙生物力学实验研究结果以及残冠、残根临床疗效评价的客观需要对前牙残冠、残根进行了新的定义和缺损程度分类。分别根据牙冠缺损面积以及龈上残留健康牙体组织高度将残冠、残根进行定义和分类：牙冠1/2≤牙冠缺损面积<牙冠2/3的前牙定义为残冠，牙冠缺损面积≥2/3的前牙定义为残根。然后，根据残留牙面肩领高度将前牙残冠缺损程度分为2类(Ⅰ、Ⅱ类)，将前牙残根缺损程度分为5类(Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ类)。对前牙残冠、残根进行定义和缺损程度分类便于客观评定其牙体缺损程度，指导医师选择合适的修复方式和修复材料，并为预测和评估修复疗效提供参考依据。
본문근거리체아생물역학실험연구결과이급잔관、잔근림상료효평개적객관수요대전아잔관、잔근진행료신적정의화결손정도분류。분별근거아관결손면적이급간상잔류건강아체조직고도장잔관、잔근진행정의화분류：아관1/2≤아관결손면적<아관2/3적전아정의위잔관，아관결손면적≥2/3적전아정의위잔근。연후，근거잔류아면견령고도장전아잔관결손정도분위2류(Ⅰ、Ⅱ류)，장전아잔근결손정도분위5류(Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ류)。대전아잔관、잔근진행정의화결손정도분류편우객관평정기아체결손정도，지도의사선택합괄적수복방식화수복재료，병위예측화평고수복료효제공삼고의거。
According to in vitro experimental research results of the tooth biomechanics and the objective needs of clinical curative effect evaluation, the residual crowns and residual roots of anterior teeth were defined and the tooth tissue defect degrees were classified. Residual crowns and residual roots were defined according to the defect area and were classified according to the residual healthy tooth tissue above gingival margin. Anterior tooth with the defect of 1/2 or more but less than 2/3 of crown was defined as residual crown and that with 2/3 or more of the crown as residual root. Residual crown defects were divided into 2 categories (ⅠandⅡ) according to the height of residual shoulder col-lar;residual root defects were divided into 5 categories (Ⅰ, Ⅱ, Ⅲ, Ⅳ andⅤ) according to the root defect degree. The definition and classification of residual crowns and residual roots of anterior teeth is convenient for evaluating resid-ual tooth defect and guiding dentist to choose proper repair methods and materials and providing reference frame to pre-dict and evaluate the curative effect.