Influence of gradually induced occlusal disorder on temporomandibular joint in young rabbit
- VernacularTitle:渐进性咬合紊乱对幼年兔颞下颌关节的影响
- Author:
Xiaodong LIU
;
Menqing WANG
- Publication Type:Journal Article
- Keywords:
Occlusion;
Temporomandibular joint;
Histology;
Rabbits
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the influence of gradually induced occlusion disorder on temporomandibular joint in young rabbits. Methods: The upper first premolar on one side and the lower first premolar on the other side of 18 New Zealand white rabbits at the age of 7 months, were pulled forward with the orthodontic string, making them inclined medially to the anterior intrinsic space. The TMJs were removed 1,2 and 3 months respectively after set up and observed histologically. Results: In the 1 month group,TMJs exhibited regressive remodeling on the lateral side. In the 2 month group,the joints simultaneously showed progressive remodeling and degenerative changes.The TMJ condyle cartilage were thinner than the controls.Conclusion: Gradually induced occlusion disorders can lead TMJ degenerative changes in young rabbit.
