Astudy of the effect of posterior teeth with reverse cross-bite on chewing mov ement
- VernacularTitle:单侧部分后牙锁者的咀嚼运动轨迹研究
- Author:
Chaoyun YAN
;
Meiqing WANG
;
Jinwu CHEN
;
Xiufang YAO
- Publication Type:Journal Article
- Keywords:
Reverse cross-bite;
Chewing movement;
MKG
- From:
Journal of Practical Stomatology
2000;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of partial p osterior teeth with reverse cross-bite at one side of mandible on the chewing m ovement. Methods: 16 university students with partial posterior teeth reverse cross-bite and 12 with normal occlusion were included, 5 cycles o f gum chewing movement with left and right side separately were recorded with K6 -Ⅰmandibular kinesiograph (MKG) for the trace and velocity. Results: ①The chewing movement recorded in frontal plane was with a typical cycl e in controls while that in reverse cross-bite individuals was vertically in an d/or out type (59.38%), as well as in and out in same direction type (21.88%). ②Chewing movement in reverse cross-bite patients was in posterior direction, together with a larger angle of closing trace to horizontal plane and higher che wing terminal velocity. Conclusion: Partial posterior teeth with reverse cross-bite at one side have significant effect on both direction and v elocity of chewing movement.
