アブストラクト（34巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Craniofacial Characterization of Normal and Malocclusion Subjects with Deciduous Dentition
Subtitle　： ORIGINAL ARTICLES
Authors　： Hisaaki Shinji, Susumu Akimoto, Sadao Sato
Authors（kana）　：
Organization　： Department of Craniofacial Growth and Development Dentistry, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 34
Number　： 1
Page　： 3-7
Year/Month　： 2006 / 3
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] The vertical dimension of the posterior part of the dentition markedly affects the functional positioning of the mandible and consequently the way the condyles adapt during growth. Sub-optimum vertical dimension therefore contributes to the development of skeletal malocclusions. The inclination and position of the occlusal plane relative to the cranio-facial complex are vitally important in diagnosing some malocclusions. However, quantitative measurements of the relationship between the occlusal plane and craniofacial structures taken during the early stages of dental development are as yet only poorly established, especially during the stages when part of the dentition is deciduous. In order to characterize the craniofacial morphology of patients with deciduous dentition, we obtained lateral cephalograms from a variety of subjects and divided them into four categories:normal occlusion, deep overbite, anterior openbite, and anterior crossbite. We then applied denture-frame analysis with some modification. We found that those subjects with an anterior crossbite or an openbite have a flat occlusal plane with the mandible shifted forward or rotated clockwise, while those with a deep overbite have a relatively steep occlusal plane with the mandible rotated counter-clockwise. Our study suggests that the inclination of the occlusal plane is an important determinant of the antero-posterior positioning of the mandible and that improper inclination contributes to the development of skeletal malocclusions.
Practice　： Dentistry
Keywords　： Occlusal plane, Deciduous dentition, Malocclusion