Abnormalities of Maxillary Anterior Teeth in Chinese Children With Cleft Lip and Palate
Abnormalities of Maxillary Anterior Teeth in Chinese Children With Cleft Lip and Palate
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DOI：
10.1597/07-077.1
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发表时间：
2009-01-01
期刊：
影响因子：
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通讯作者：
Wong, Hai Ming
中科院分区：
文献类型：
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作者：
Lai, Moon Cheung;King, Nigel M.;Wong, Hai Ming
目的：回顾分析华南地区完全性唇腭裂(CLP)儿童上颌前牙合畸形的患病率、牙位、牙位及牙体发育的不对称性。研究对象：195名3~17岁的CLP儿童。方法与材料：根据牙科病历和牙体铸型及X线片进行分析。结果：单侧CLP儿童唇侧恒侧切牙患病率为19.2%，双侧CLP儿童患牙率为20.5%。UCLP组和BCLP组分别有78.1%和95.9%的牙裂侧中切牙发生旋转。在恒牙中，UCLP儿童有43.4%的恒牙位于唇裂侧，而BCLP儿童有69.7%的恒牙位于正常位置。此外，近中尖牙常常伴随着恒侧切牙的缺失，而远中尖牙总是伴随着裂隙区域的多余牙的存在。与非裂侧相比，裂侧恒牙发育明显延迟，而延迟性恒侧切牙正常发育。结论：本组中国儿童CLP患侧牙列发育迟缓、缺牙症和牙体发育延迟的发生率明显高于非裂侧。
Objective: To retrospectively study the anterior maxilla of southern Chinese children with complete cleft lip and palate (CLP) for the prevalence of different kinds of dental anomalies, position and rotation of the teeth, and the asymmetry of dental development.Patients: 195 southern Chinese children with CLP aged between 3 and 17 years.Methods and materials: Dental records and study casts were studied as were the radiographs from which the dental development was determined.Results: The tooth prevalence of cleft side permanent lateral incisor was 19.2% in unilateral CLP (UCLP) children and 20.5% in bilateral CLP (BCLP) children. The cleft side central incisors were rotated in 78.1% and 95.9% of the teeth in UCLP and BCLP children, respectively. Of the permanent canines, 43.4% were positioned mesially on the cleft side in UCLP children, while for BCLP children 69.7% of the teeth were in a normal position. In addition, the mesially positioned canines were often associated with an absence of the permanent lateral incisor while the distally positioned canines were always associated with the presence of supernumeraries in the cleft region. The permanent teeth on the cleft side showed significantly delayed development compared with their antimeres on the noncleft side; however, the delayed permanent lateral incisors did complete their formation normally.Conclusion: This group of Chinese children with CLP demonstrated statistically significant higher prevalences of hypodontia, microdontia, and delayed dental development on the cleft side than the noncleft side.