Mandibular Morphology in Subjects with ClassⅢMalocclusion: the Finite Element Study from Cephalographs

• Main Authors: Chien-Hung Chen, 陳建宏
• Other Authors: Chen-Hsing Yen
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/40276849243345718411

碩士 === 高雄醫學院 === 牙醫學研究所 === 87 === Cephalometric study using FEM to compared 60 of Class Ⅲmalocclusion patients aged 8-17 years with their 60 counterparts of normal Class I occlusion was carried out. Twenty-four landmarks on the mandible were selected and digitized. The morphological differences between Class I and Class Ⅲ groups were then color-mapped to provide graphical displays. It is showed that Class Ⅲ malocclusion samples in this study were significant characterized with longer mandibular corpus, smaller condyle and coronoid process. Meanwhile, the prominence of size difference on chin area was observed, associated with maximum size difference localized on menton area. These morphological differences may contribute to the mandibular prognathism. The all parameters of size difference are more various than those in shape difference. Although there are some small differences between the mandibular morphology of male and female with Class Ⅲ malocclusion, the difference are not significant.