安格尔Ⅱ类1分类错(牙合)畸形临界病例拔牙与否的正畸治疗效果评估
안격이Ⅱ류1분류착(아합)기형림계병례발아여부적정기치료효과평고
An evaluation of premolar extraction and non-extraction treatment outcome on borderline cases with Angle class Ⅱ division 1 malocclusion
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