The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 32 Issue 2
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- Pages.281-295
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- 1994
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
A STUDY ON THE MANDIBULAR MOVEMENT OF ANTERIOR OPENBITE PATIENTS
전치부 개교환자의 하악 운동에 관한 연구
- Koak Jai-Young (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
- Kim Kwang-Nam (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
- Chang Ik-Tae (Department of Prosthodontics, College of Dentistry, Seoul National University)
- Published : 1994.07.01
Abstract
It is very important for the ideal restorations of anterior openbite patients to record the mandibular movement and to harmonize mandibular movement with other organs in stomatognathic systems. This study was designed to compare the mandibular movement of anterior openbite patients with that of normal bite(Angle Class I) patients, to ascertain which components of mandibular movement have differences between two groups, and to use for occlusal treatment of mandibular movement. Saphon Visi-trainer Model 3(Tokyo Shizaisha Co. Japan) and Denar Pantronic(Denar Corp.,U.S.A.) were used to record mandibular movement. Pantronic survey was peformed by using an arbitrary hinge axis according to manufacturer's direction. Twenty-eight adult who have physiologically normal occlusion(Angle Class I) and are free of TM dysfunction were selected as a control group(Group 1). Fifteen adult who are anterior openbite patient and have not anterior guidance function and have posterior interference at protrusion were selected as a experimental group(Group 2). The results are as follows : 1. There was no statistically significant difference between the average immediate and progressive side shift of anterior openbite patients(0.54mm,
Keywords
- protrusive condylar inclination;
- orbiting condylar inclination;
- immediate side shift;
- progressive side shift;
- angle of laterotrusion;
- angle of protrusion;
- maximum opening