混合牙列期兒童的牙齒數(shù)目及形態(tài)異常的分析
[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.
【作者單位】: 口腔疾病研究國(guó)家重點(diǎn)實(shí)驗(yàn)室華西口腔醫(yī)院兒童口腔科(四川大學(xué));成都市第一人民醫(yī)院口腔內(nèi)科;
【分類(lèi)號(hào)】:R788
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