Three-dimensional longitudinal changes of maxilla and mandible morphology during the predental period
Three-dimensional longitudinal changes of maxilla and mandible morphology during the predental period
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DOI：
10.23804/ejpd.2017.18.02.09
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发表时间：
2017-01-01
影响因子：
3.6
通讯作者：
Nikawa, H.
中科院分区：
文献类型：
--
作者：
Kihara, T.;Kaihara, Y.;Nikawa, H.
目的本研究的目的是纵向分析的形态上颌骨和下颌骨随着时间的推移在婴儿使用三维（3D）表面scanner.Materials和方法17日本足月婴儿参加了这项研究。从1月龄到12月龄，每3个月制作一次牙石膏模型。使用3D表面扫描仪扫描石膏模型以创建3D模型。结果上颌、下颌骨的牙弓宽度、牙弓长度、牙弓角度、腭深、腭面积均随牙弓角度的减小而增大。上颌牙弓宽度和长度大于下颌牙弓宽度和长度。在咬合面上，总牙槽嵴形态的大小增加，在矢状方向上有明显的增长。腭的深度几乎保持不变，虽然腭面积增加，作为一个结果，颊部的牙槽嵴growth.Conclusions的形态生长模式的婴儿的上颌骨和下颌骨可以定量评估使用3D分析。了解儿童的健康发育和牙前期的口面生长模式可作为诊断标准的指标。
Aim The purpose of this study was to longitudinally analyse the morphology of maxilla and mandible over time in infants using a three-dimensional (3D) surface scanner.Materials and methods Seventeen Japanese fullterm infants participated in the study. Dental plaster models were fabricated every 3 months from 1 month of age to 12 months. The plaster models were scanned using the 3D surface scanner to create 3D models. The arch width, arch length, arch angle, palatal depth and palatal area of the 3D models were analysed.Results The arch width and length of maxilla and mandible increased as the arch angle decreased. The arch width and length of the maxilla were greater than those of the mandible. The total alveolar ridge morphology increased in size in the occlusal view, with marked growth in the sagittal direction. The palatal depth remained virtually unchanged although the palatal area increased as a result of buccal growth of the alveolar ridge.Conclusions The morphological growth pattern of the maxilla and mandible in infants can be evaluated quantitatively using 3D analysis. Knowledge about the healthy development of children and their orofacial growth patterns during the predental period can be applied as an index for diagnostic criteria.