【摘要】 目的 研究非综合征型单侧完全性唇腭裂新生儿上颌牙槽的三维形态特征，并验证三维测量方法的可靠性及可重复性。方法 筛选60名单侧完全性唇腭裂新生儿，通过iTero口内扫描仪对其初始上颌石膏模型进行扫描，由同一研究员使用Mimics软件对上颌牙槽的25个测量项目进行共两次三维测量，对两次的测量结果进行Bland-Altman一致性检验；并依据上颌牙槽的形态将样本分为G1、G2、G3三组，通过两两比较研究不同分组上颌牙槽的形态差异。结果 所有测量值的结果均符合正态分布，且两次测量结果具有较好的一致性。单侧完全性唇腭裂新生儿健侧的前段牙槽长度以及前后段牙槽的旋转角均明显大于对侧的前后段牙槽；G1及G2组健侧前段牙槽长度明显长于G3组，G1组牙槽裂隙宽度、牙弓中段的裂隙宽度、尖牙水平的牙弓宽度和健侧前段牙槽的旋转角都明显小于G2、G3组。结论 本研究统计了非综合征型单侧完全性唇腭裂新生儿上颌牙槽的平均尺寸，前段牙槽的发育不足和健侧前段牙槽的外旋程度共同决定了单侧唇腭裂牙槽裂隙的严重程度。更多还原

【Abstract】 Objective To investigate morphological characteristics of maxillary arches of unilateral complete cleft lip-and-palate(UCLP) newborns, and confirm the reliability and repeatability of a novel 3 D measurement. Methods A total of 60 newborns with UCLP up to the mustard were selected. An intraoral scanner was applied to collect digital models of their initial maxillary arches and measurements were completed with Mimics software. In all, 25 items of maxillary alveolus were measured for each model twice, and then Bland-Altman analysis was done to check the consistency. All samples were divided into three groups according to morphological features, and comparative analysis was completed to study morphological differences between different groups. Results All measurements were in accordance with normal distribution and this novel 3 D measurement showed clinically acceptable consistency. Length of the anterior segment of alveolus and angles of both the anterior and posterior segments of alveolus on the none-cleft side(NCS) were all greater than those on the cleft side(CS). Length of the anterior segment of alveolus on the NCS in Group 1 and 2 was significantly greater than that in Group 3. Besides, samples in Group 1 showed smaller width of the cleft and the arch in both anterior and middle parts, compared with other groups. Angular values showed that angle of the anterior segment of alveolus on the NCS in Group 1 was smaller than that of other groups. Conclusion The research summarizes average dimensions of the maxillary arches of non-syndromic UCLP newborns. Besides, it is observed that severity of cleft depends on both the insufficient length and the rotation angle of the anterior segment of alveolus on the NCS.更多还原