混合牙列期儿童的牙齿数目及形态异常的分析

发布时间：2018-08-15 14:11

【摘要】：目的应用曲面断层技术分析混合牙列期儿童恒牙数目及形态异常的发生情况。方法收集2011年9月—2013年9月就诊的5~15岁混合牙列期儿童的曲面断层片,共纳入4 347张,观察记录先天缺牙、多生牙、牙瘤、过小牙、融合牙、弯曲牙和畸形牙尖的发生情况。应用SPSS 16.0统计学软件分析所得数据。结果牙齿数目及形态异常的患病率为31.79%(1 382/4 347),男性多于女性,差异具有统计学意义(P0.05)。先天缺牙为最常见的牙齿数目及形态异常,患病率为15.00%(652/4 347),女性多见;其次为多生牙,患病率为12.61%(548/4 347),男性多见(P0.05)。过小牙、弯曲牙患病率分别为4.00%(174/4 347)和2.16%(94/4 347),畸形牙尖、牙瘤、融合牙较少见,分别为0.74%(32/4 347)、0.51%(22/4 347)、0.39%(17/4 347)。结论混合牙列期儿童恒牙数目及形态异常的患病率较高,先天缺牙和多生牙最常见。应用曲面断层技术进行检查,可早期发现牙齿发育异常。
[Abstract]:Objective to analyze the occurrence of abnormal number and shape of permanent teeth in children with mixed dentition by curved surface tomography. Methods from September 2011 to September 2013, a total of 4,347 curved surface tomograms of children aged 5 or 15 years old with mixed dentition were collected and recorded. The occurrence of congenital missing teeth, multiple teeth, odontomas, small teeth, fused teeth, curved teeth and malformed cusps were observed and recorded. The data were analyzed by SPSS 16.0 software. Results the prevalence of abnormal number and shape of teeth was 31.79% (1 382 / 4 347), which was significantly higher in males than in females (P0.05). Congenital tooth defect was the most common abnormal number and shape of teeth, the prevalence rate was 15.00% (652 / 4 347), followed by overdentures (12.61%) and males (P0.05). The prevalence of curved teeth was 4.00% (174 / 4 347) and 2.16% (94 / 4 347) respectively. Malformed cusps, odontoids and fused teeth were rare, 0.74% (32 / 4 347) or 0.51% (22 / 4 347) or 0.39% (17 / 4 347), respectively. Conclusion the prevalence of abnormal number and shape of permanent teeth in children with mixed dentition is higher than that in children with congenital and supernumerary teeth. The abnormal tooth development can be found in the early stage by using the curved surface tomographic technique.
【作者单位】：口腔疾病研究国家重点实验室华西口腔医院儿童口腔科(四川大学);成都市第一人民医院口腔内科;
【分类号】：R788

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