Anterior disc displacement of temporomandibular joint induced by persistent traction through orbit
- VernacularTitle:经眶持续牵引颞下颌关节盘前移位动物模型的评价
- Author:
Yinkai ZHANG
;
Zhiyuan GU
;
Jing ZHAN
- Publication Type:Journal Article
- Keywords:
Rabbits;
Temporomandibular joint disk;
Anterior disc displacement;
Animal model
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To establishing model of anterior disc displacement(ADD) of temporomandibular joint(TMJ) by persistent inducement of traction through orbit. Methods:The inferior and posterior walls of orbit of right side in 8 rabbits were exposed. The anterior part of disc was vertically passed through using a suture needle with an elastic rubber. The double strands of the elastic rubber was stretched forward from 7 mm to 16 mm and fixed in the hole drilled in the zygomatic arch bellow inferior orbit. The rabbits were killed 1,2,4 and 8 weeks after operation respectively, then both TMJs of each were resected. The paraffin sections were made and stained with hematoxylin & eosin. Results:The mandible of the rabbits deviated to the left side with inclined attribution of incisors. The disc was displaced forward and the degree of ADD in the rabbits was similar. Conclusions:The disc anterior displacement of temporomandibular joint can be induced by persitent anterior traction of the disc.
