儿童非综合征型恒尖牙先天缺失的临床分析

Clinical Analysis of Non-syndromic Congenital Permanent Canines Agenesis in Children.

目的:探讨恒尖牙先天缺失的发生率及其临床特征,分析恒尖牙先天缺失的分布规律及临床特点。方法:收集恒尖牙先天缺失的患者,记录恒尖牙先天缺失发生的部位和数目。结果:恒尖牙先天缺失的发生率为0.51%(190/37086),男性110例多于女性80例,但性别间差异无统计学意义(P>0.05);恒尖牙缺失1~2颗例数占98.42%(187/190);上颌恒尖牙缺失244颗明显多于下颌恒尖牙缺失33颗,差异有统计学意义(P<0.01);左侧缺失133颗,略少于右侧的144颗,差异无统计学意义(P>0.05)。结论:临床上偶然可以见到恒尖牙先天缺失。在例数上,恒尖牙先天缺失男性多于女性,但性别间无统计学差异,多为1~2颗恒尖牙缺失,上颌尖牙缺失多于下颌,但左右侧间分布无差异。

Objective:To investigate the incidence and clinical characteristics of congenital permanent canines agenesis,and to analyze their distribution and clinical feature.Methods:Congenital permanent canines agenesis were collected,as well as the location and number of canines agenesis were recorded.Results:The prevalence of congenital permanent canines agenesis was 0.51%(190/37086).The number of boys(110)was more than that of girls(80),but there was no statistical difference(P>0.05).One or two permanent canines agenesis accounted for 98.42%(187/190).The number of permanent canines agenesis in maxilla(244)was more than that in mandible(33),and the difference was statistically significant(P<0.01).The number of teeth in the left jaw(133)was slightly less than that in the right(144),and the difference was not statistically significant(P>0.05).Conclusion:The congenital permanent canine absence is occasionally happened in clinic.There was no difference between the genders.Most of the cases were 1-2 permanent canines absence,and the maxilla was more often happened than the mandible,however,no difference between the left and right sides.