畸形中央尖、畸形舌侧窝、畸形舌侧尖、牙中牙,同属于牙齿形态异常(畸形牙)。畸形中央尖多见于黄种人,上下颌双尖牙均可发生。以下颌第二双尖牙更为多见,呈对称性发生,有时全部双尖牙都可发生。据报道发病率约2%。畸形舌侧窝、舌侧尖和牙中牙统称为牙内陷。多见于上颌侧切牙,偶见中切牙,呈对称性发生。其发生率与遗传有关。畸形舌侧窝是牙内陷中最轻的一种;畸形舌侧尖(指状舌尖)有时表现为小结节状隆起。牙中牙是牙内陷最严重的一种,牙齿呈园锥状。
每年全世界都有不计其数的儿童接受正牙治疗,以使牙齿变得更加整齐或是矫正畸形。
Each year countless children around the globe receive orthodontic treatment to align their teeth or correct other irregularities.
目的:探索应用自体脱钙牙移植矫正鼻畸形的可能性。
Objective: To explore the possibility of orthotherapy of nose malformation with implantation of decalcifing autogenous tooth.
目的:观察心理干预对错牙合畸形患者正畸治疗中合作行为及结果的影响。
Objective To study the influences of psychological intervention on cooperation and result in orthodontic treatment of malocclusion deformity.
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