A study on the interrelations between subjective and objective indicator based on three-dimensional measurement in facial evaluation

本研究采用三维数字立体摄影测量技术，探讨义齿基托体积和上颌全口义齿垂直尺寸对上颌无牙患者面部形态的影响。移除义齿法兰时，所有受试者均观察到与无义齿法兰区域对应的单侧凹面。另一方面，当颊缘肿胀3mm时，所有受试者的双侧面部均出现与义齿凸缘肿胀区相对应的凸起。当垂直尺寸改变时，鼻翼周围的形态变化不明显。另一方面，鼻下点、上唇点和上唇点周围的形态有可能随着垂直维数的变化而改变。

The purpose of this study was to investigate the influence of denture base volume and vertical dimension of maxillary complete denture on facial morphology in individuals with maxillary edentulous by using three-dimensional digital stereophotogrammetry.In the case of removing the denture flange, unilateral concave surface corresponding to the area without denture flange was observed in all subjects. On the other hand, when the buccal flanges were swollen 3 mm, the bulge corresponding to swollen area of denture flange was observed in all subjects faces bilaterally.When changing the vertical dimension, the morphological change surrounding the ala of nose was not observed. On the other hand, it was suggested that the morphologies surrounding the subnasale, labrale superius, and cheilion points had the potential to be changed with a change in the vertical dimension.