恒牙埋伏阻生的临床分析  

Clinical analysis of the impacted permanent teeth

作　　者：步捷[1] 王旭霞[1] 张君[1] 陈岱韵[1] 黄艳[1] 

机构地区：[1]山东大学口腔医学院,山东济南250012

出　　处：《临床口腔医学杂志》2007年第6期363-366,共4页Journal of Clinical Stomatology

基　　金：山东省科学技术发展计划项目资助(2006GG2202031);山东省东营市科技局科学技术发展计划项目资助(2006-24)

摘　　要：目的:探讨恒牙埋伏阻生的发病情况和发生原因。方法:通过模型和X线片检查,在1925例正畸门诊病例中确诊103例患者199个埋伏阻生恒牙,对其进行统计分析。结果:在199个埋伏阻生恒牙中以上颌尖牙和上颌中切牙埋伏牙数最多,分别为94个和39个,由于萌出间隙不足引起的埋伏牙数量最多本组为62个。结论:①在所有牙位中,以上颌尖牙埋伏阻生的发病率最高,下颌中切牙最低。②引起恒牙埋伏阻生的病因以萌出间隙不足最常见。Objective; To study the incidence and etiology of the impacted permanent teeth. Method; With the help of tomogram, we diagnose 103 patients with the impacted permanent teeth in 1925 patients.Result; In the 199 impacted permanent teeth, the number of the maxillary canine is 94 and the number of the maxillary central incisor is 39.And 62 teeth unreupted because of crowding.Conclusion; （1）.The incidence of the impacted maxillary canines is the highest, the incidence of the impacted mandibular central incisor is the lowest.（2）.Crowding is the main cause of impaction.

关 键 词：埋伏牙 发病率 病因 

分 类 号：R780.2[医药卫生—口腔医学]