Effect of orthodontic and surgical treatments of skeletal crossbite on the electromyographic activity of human masticatory muscles
- VernacularTitle:正畸与正颌联合治疗成人骨性反后咀嚼肌肌电变化
- Author:
Jun LENG
;
Yinzhong DUAN
;
Junhua ZHANG
- Publication Type:Journal Article
- Keywords:
Electromyography;
Masticatory muscles;
Orthodontic treatments;
Orthognathic operation;
Skeletal crossbite
- From:
Journal of Practical Stomatology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the effect of orthodontic and surgical treatments of skeletal crossbite on the electromyographic activity of human masticatory muscles. Methods: Electromyogram was used to test the changes of the electromyographic activity of masseter muscles, temporal anterior and diagastric anterior in 20 patients with skeletal crossbite before and after treatments. Results: Orthodontic and surgical treatments showed different effect on the activity of masseter muscle, temporal anterior and diagastric anterior. The change of the activity of the masseter muscle was the most significant among them. But, during chewing the masseter muscle was less active after treatments. Conclusion: Abnormal activity of the masticatory muscles can be partly corrected by the orthodontic and surgical treatments. The treatments cannot fully recover the function of the masseter muscle.
