仮想歯列モデルを用いた歯と歯列弓形態の評価

概要

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The aim of this study was to clarify the three-dimensional (3D) morphological characteristics of dentition using a virtual model of dental arches. Full-mouth dental cast sets were prepared from 217 volunteers (121 male and 96 female). Dental casts were scanned by optTOP-HE scanner. The 3D models were measured and analyzed with Rapidform 2004 software. For the measurements of four morphological parameters(maxillary and mandibular arch lengths, width and first molar width), linear regressions were performed using each variable as the predictor and each other variable as the outcome. In all parameters, the male group showed higher values than the female groups. In the case of the combined and male groups, correlation coefficients of all items were statistically significant (P<0.01). The approach used in this study provides a reliable reference point definition and may provide basic information for dentistry.