直丝弓矫治技术用于安氏骨性Ⅱ类错(牙合)畸形治疗前后面型的改变
직사궁교치기술용우안씨골성Ⅱ류착(아합)기형치료전후면형적개변
Facial profile changes after using of the straight wire appliance in treatment of skeletal class Ⅱ malocclusion
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