北海市错牙合畸形患者额外牙的临床研究

Study on the supernumerary tooth of malocclusion patients in Beihai city

目的了解北海市错牙合畸形患者额外牙的患病情况。方法以近年在该科接受正畸治疗的3274例健康青少年错牙合畸形患者作为观察对象,通过分析曲面断层片来确诊额外牙的患病情况。结果北海市错牙合畸形患者额外牙发病率为7.61%,男女性别之比为2.83∶1。结论北海市错牙合畸形患者额外牙的患病率可能存在地域性特点,上前牙区最多见,男性患病率高于女性,造成牙弓拥挤为主要表现。

【Objective】To investigate the prevalence of supernumerary tooth in patients who receiving orthodontic treatment in our department in recent years.panoramic radiographs was used to analyze the supernumerary teeth＇s prevalence.【Results】The incidence rate of the malocclusion patients＇ supernumerary teeth in Beihai was 7.61%,gender ratio was 2.83：1,the gender difference was statistically significant（P 0.05）.【Conclusions】The prevalence of the malocclusion patients＇ supernumerary tooth in Beihai may exist regional characteristics,most of supernumerary tooth common in the upper anterior,male＇s prevalence was more than female.Cause crowding is the main performance.