单纯型先天性恒牙缺失的临床观察

The Clinical Observation of Patients with Congenital Simple Permanent Teeth Missing Teeth

目的观察单纯型先天性恒牙缺失的缺牙状况,探讨其分布规律和临床特点。方法对我院门诊口腔科就诊患儿共91例的临床资料进行回顾性的统计学分析。结果统计的患者中下颌第二前磨牙共缺失77颗,下颌中切牙和上颌第二前磨牙均缺失58颗,下颌第一磨牙共缺失3颗,上颌第一磨牙共缺失4颗。上、下颌(P=0.224,t=-6.146)及左、右侧(P=0.928,t=-6.514)牙齿缺失数目差异均无统计学意义(P>0.05)。缺失牙位多呈对称分布,双侧均有缺失者有76例,占总数的83.5%(76/91)。结论单纯型先天性恒牙缺牙患者中,第三磨牙不算,下颌第二前磨牙是最易缺失的牙齿。

Objective To observe the condition of congenital simple permanent teeth missing teeth of the patients. Methods To analyse the 91 cases of children＇s clinical data in dental clinic of our hospital with retrospective statistical analysis. Results Statistic patients missing 77 mandibular second premolar,missing 58 mandibular central incisors and the maxillary second premolar,missing 3 mandibular first molars,missing 3 maxillary first molars. The number of missing teeth between the upper and lower jaw（P = 0.224, t=-6.146） and the left and right（P=0.928, t=-6.514） has no significant difference（P〉0.05）. Most of missing teeth were symmetrical distribution,76 cases＇both sides missing,accounting for 83.5%（76/91）. Conclusion Patients with simple congenital missing teeth in permanent teeth,third molars do not count,mandibular second premolar is the most vulnerable missing teeth.