双侧上颌侧切牙先天缺失与前牙宽度的关系。
Relationship between bilateral congenital absence of maxillary lateral incisors and anterior tooth width.
机构信息
Resident in orthodontics, Kent and Canterbury Hospital, Canterbury, Guy's Hospital, London, United Kingdom.
出版信息
Am J Orthod Dentofacial Orthop. 2011 Mar;139(3):e229-33. doi: 10.1016/j.ajodo.2010.04.030.
INTRODUCTION
The objective of this study was to assess the relationship between anterior tooth width and the presence or absence of maxillary lateral incisors.
METHODS
Reference models of 106 subjects, 52 with bilateral agenesis of maxillary lateral incisors and 54 fully dentate controls, were examined. The sample was based on orthodontic patients treated over a 10-year period at Kent and Canterbury Hospital, Canterbury, Kent, United Kingdom. Maximum tooth widths were measured by using digital calipers (Tesa Technology, Renens, Switzerland).
RESULTS
Individual tooth dimensions in the maxillary and mandibular anterior segments were reduced by 0.33 to 0.42 mm, respectively, in subjects with agenesis of the maxillary lateral incisors. Linear regression analysis confirmed that these differences have statistical significance (P <0.001).
CONCLUSIONS
Isolated bilateral absence of maxillary lateral incisors is associated with reduced mesiodistal tooth widths in both the maxillary and mandibular anterior segments.
简介
本研究旨在评估上颌侧切牙缺失与前牙宽度之间的关系。
方法
对 106 名受试者（52 名双侧上颌侧切牙缺失和 54 名完全有牙的对照组）的参考模型进行了检查。该样本基于在英国肯特郡坎特伯雷市肯特和坎特伯雷医院接受治疗的正畸患者，治疗时间为 10 年。使用数字卡尺（瑞士雷宁的 Tesa Technology）测量最大牙齿宽度。
结果
上颌侧切牙缺失的患者上颌和下颌前牙段的个别牙齿尺寸分别减少了 0.33 至 0.42 毫米。线性回归分析证实这些差异具有统计学意义（P <0.001）。
结论
孤立性双侧上颌侧切牙缺失与上颌和下颌前牙段的近远中牙齿宽度减小有关。
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