Incessant Change of Mandibular Growth in Untreated Subjects with Class Ⅲ Malocclusion
The purpose of this study was to investigate incessant changes of mandibular growth in subjects with growing Class Ⅲ children using strain tensor analysis (STA). The mandibular landmarks of initial and final cephalographs of 40 Taiwanese children with untreated Class Ⅲ malocclusion were defined and digitized. F test evidenced statistical difference (p<0.01) between two stages of mandibular growth. The morphometric assessment of STA was used to obtain a growing tendency of mandibular protrusion. The size change revealed that maximum increase in size of approximately 11.8％ was detected between B and Pg. For shape change, the location of major difference was mainly in the incisor alveolus region approximately 8.6％. Furthermore, the size and shape change of the STA is powerful to investigate the incessant growth change of the Class Ⅲ mandible.
Indez terms-Class Ⅲ malocclusion strain tensor analysis morphometry mandibular protrusion size change shape change
Pao Hsin Liu Hong Po Chang
Department of Biomedical Engineering,I-SHOU University,Taiwan Department of Dentistry,Kaohsiung Medical University,Taiwan
国际会议
北京
英文
1-2
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）