Objective To observe the stress distribution of maxillary first molar and its periodontium in lingual orthodontics.
目的采用有限元的方法研究舌侧矫治过程中上颌第一磨牙牙根、牙周膜、牙槽骨应力分布的特点。
Many frank misconceptions still exist surrounding the efficacy and clinical nature of lingual orthodontics, which were first introduced over 25 years ago in Japan and the United States.
许多坦诚的误解依然存在周围的疗效和临床性质语言矫正，这是首次采用25年前在日本和美国。
Many frank misconceptions still exist surrounding the efficacy and clinical nature of lingual orthodontics, which were first introduced over 25 years ago in Japan and the United States.
许多坦诚的误解依然存在周围的疗效和临床性质语言矫正，这是首次采用25年前在日本和美国。
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