CAJ | 학술논문

目的：通过分析人群中上颌中切牙透明层分布特点，为天然牙透明层分布的临床分类工作提供理论依据。方法采用连续整群抽样的方式获取研究样本，利用直接观察法收集目标人群天然牙透明层分布相关信息。结果人群中天然牙透明层分布类型所占比例由大到小分别为“透明层覆盖于整个牙冠，使牙冠整体看上去明亮”（48.39%），“透明层仅覆盖于牙冠切缘”（28.36%），“透明层覆盖于牙冠切缘和邻面”（17.25%），“透明层覆盖于牙冠邻面”（5.99%）；并且，女性天然牙透明层分布在牙冠的切缘和邻接面的概率大于男性；随着年龄增长，天然牙的邻接面有变透明的趋势，46岁以上这种趋势变得更为明显。结论上颌中切牙透明层分布的临床分类具有一定的必要性和科学性。
목적：통과분석인군중상합중절아투명층분포특점，위천연아투명층분포적림상분류공작제공이론의거。방법채용련속정군추양적방식획취연구양본，이용직접관찰법수집목표인군천연아투명층분포상관신식。결과인군중천연아투명층분포류형소점비례유대도소분별위“투명층복개우정개아관，사아관정체간상거명량”（48.39%），“투명층부복개우아관절연”（28.36%），“투명층복개우아관절연화린면”（17.25%），“투명층복개우아관린면”（5.99%）；병차，녀성천연아투명층분포재아관적절연화린접면적개솔대우남성；수착년령증장，천연아적린접면유변투명적추세，46세이상저충추세변득경위명현。결론상합중절아투명층분포적림상분류구유일정적필요성화과학성。
Objective By analyzing the distribution of maxillary central incisor crowd translucent layer, to provide a theoretical basis for the clinical classification about the distribution of the translucent layer. Methods By continuous cluster sampling for the study sample, the use of direct observation target to collect population distribution of natural teeth translucent layer. Results The proportion of the population distribution of natural teeth translucent layer type from big to small was ‘translucent layer covering the entire tooth surface’(48.39%), ‘translucent layer covering at the cutting edge’(28.36%), ‘translucent layer covering the cutting edge and the adjacent surfaces’(17.25%), ‘translucent layer covering the adjacent surface’(5.99%), and women natural teeth translucent layer covering the cutting edge of the tooth and the adjacent surface of probability than men. The older had the better upper central incisor translucent layer covering than the younger.