アブストラクト（27巻1号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： Maximum Separation of Incursive and Excursive Hinge Axis Paths in Anterior Open Bite and Normal Bite Subjects
Subtitle　： ORIGINAL ARTICLES
Authors　： Ales G.Celar, Mitsuyoshi Kubota1), Sadao Sato1), Elisabeth Brandstetter
Authors（kana）　：
Organization　： Department of Fixed and Removable Prosthodontics, University of Vienna, 1)Department of Orthodontics, Kanagawa Dental College
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 27
Number　： 1
Page　： 25-30
Year/Month　： 1999 / 3
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] This study tested whether the anterior open bite is associated with a greater separation of the excursive and incursive condylar movements than is seen in subjects with a normal bite. Fifty Japanese with an anterior open bite as well as 50 Japanese with a normal bite underwent computerized recordings of hinge axis movements. The maximum divergence of the excursive and incursive hinge axis tracings was quantified for protrusion, open and close, and lateral movements with and without the manual guidance of the examiner. The anterior open bite group showed a maximum separation of the hinge axis paths equivalent to the normal bite group (means from 0.4 to 0.9mm). Only the right side mediotrusion movements showed a significant difference of the maximum divergences between both groups (p<0.05). Within each group there were significant differences in the separations when comparing open-and-close vs. protrusion or mediotrusion movements. This indicated an influence from the rotation of the mandible, associated with more divergence of the condyle path. Considering the gender, the maximum separation showed few significant sex differences in both the anterior open bite and normal bite groups.
Practice　： Dentistry
Keywords　： Condyle path separation, Hinge axis movement divergence, Anterior open bite, Mandibular movement