Palatal rugae positional changes during orthodontic treatment of growing patients
Palatal rugae positional changes during orthodontic treatment of growing patients
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DOI：
10.1111/ocr.12441
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发表时间：
2020-12-01
影响因子：
3.1
通讯作者：
Gkantidis, Nikolaos
中科院分区：
文献类型：
--
作者：
Pazera, Caroline;Gkantidis, Nikolaos
目的探讨作为牙体模型叠合参考的中纹区前后垂直变化与下位骨结构的关系。回顾性分析24例正畸患者（治疗开始年龄12.26 +/- 0.83岁，评估期2.13 +/- 0.68岁）治疗前后的头颅x线片和三维数字牙模型。所有患者均有轻度至中度错颌，均采用全固定矫治器治疗。材料与方法在牙模型上放置尖锐的乳头和皱褶点，然后在头颅x线片上记录。之后，在Sella， ANS-PNS和上颌结构法上叠加x线片。利用Viewbox 4软件测量了乳突和皱褶点以及中切牙的垂直和水平运动。结果锐突乳头和3个皱襞点在正反方向上保持稳定，但在垂直方向上向下移动（约1 ~ 2 mm），两者相似（P < 0.05）。而前牙位置和牙倾角的变化对乳突的前后位置和第一皱褶点的位置有影响（P < 0.05）。结论第2、3张分级表均可作为牙体运动评估的叠加参考。不建议使用乳头和第一粗糙区，因为它们会受到牙齿运动的影响。腭重叠的结果与上颌骨骼在前后重叠的结果相当，但在垂直维度上则不然。
Objectives To investigate the anteroposterior and vertical changes of the median rugae area, which is commonly used as dental model superimposition reference, relevant to its underlying skeletal structures.Settings and sample population Retrospectively collected pre- and post-treatment cephalometric radiographs and 3D digital dental models of 24 orthodontic patients (age at treatment start: 12.26 +/- 0.83 years; assessment period: 2.13 +/- 0.68 years) were analysed. All had mild to moderate malocclusions that were treated non-extraction with full fixed appliances.Material and Methods The incisive papilla and rugae points were placed on the dental models that were then registered to the cephalometric radiographs. Afterwards, the radiographs were superimposed on Sella, ANS-PNS, and through a maxillary structural method. The vertical and horizontal movements of the papilla and the rugae points, as well as of a central incisor, were measured (Viewbox 4 software).Results The incisive papilla and the three rugae points remained stable anteroposteriorly, but moved downwards in the vertical dimension (approximately 1-2 mm), in a similar manner (P > .05). However, the anteroposterior position of the papilla and the first rugae points were affected by changes in anterior tooth position and inclination (P < .05).Conclusion Both the second and third rugae can be used as superimposition references for tooth movement assessment. The use of the papilla and the first rugae area is not recommended, because they are affected by tooth movement. The outcomes of a palatal superimposition are comparable to those of a maxillary skeletal superimposition in the anteroposterior, but not in the vertical dimension.