A comparison study on the treatment effects between of laser and myomonitor therapy to pain in patients of temporomandibular disorders
QIN Hai-yan, WANG Mei-qing, YUAN Li, ZHAO Ying-hua, ZHANG Jun-Hua. Department of Stomatology,The 454 Hospital of PLA,Nanjing,China
Objective:To compare the effects of laser and myomonitor therapy in patients of temporomandibular disorders (TMD) with oralfacial pain.Method:Seventy subjects were randomly divided into two groups: Group A of semi-conductor laser treatment and Group B of myomonitor treatment, in each group subjects were divided into acute sub-group and chronic sub-group according to whether the pain lasted less than or more than three months accordingly. Records of pain degree, EMG of bilateral anterior temporolis(TA)and masseter muscle (MM) and occlusion contact features were obtained before and after treatment.Result:(1)The degree of pain was reduced significantly after treatment in each of the two groups(p0.01).(2) EMG activity:The symmetry of bilateral EMG activity was improved significantly of TA and MM in both Group A acute sub-group and Group B acute sub-group, and also of MM in Group B sub-chronic group.(3) The occlusal contacts number was found increased only in Group B acute sub-group after treatment (p0.05).Conclusion:TMD pain can be reduced after 1～2 weeks treatment with laser or myomonitor, while myomonitor was more effective than laser for the chronic pain. The TMD pain associated with masticatory muscle dysfunction closely.