Abstract: Objective: To investigate the hyaluronic acid sodium(SH) intra-articular injection combined with stable biteplate(SBP) in temporomandibular joint disorder(TMD) therapy, to evaluate the effect of treatment. Methods: Observation group included 18 cases of TMD patients who were given SH intra-articular injection therapy combined with SBP treatment;the control group included 18 patients with TMD who were treated only with SBP treatment. Comparative analysis was performed before and after treatment in patients with opening index (OTI), pain index (VAS) and muscle tenderness index (PI) and joint pressure diagnosis value (JP) changes. Results: After treatment, OTI, VAS, PI and JP of the patients in the two groups were significantly decreased, and the observation group index decreased significantly lower than the control group (P<0.05). Conclusion: Intraarticular injection of SH combined with SBP in the treatment of the effect of TMD is better than the simple use of SBP fixed.

Key words: Temporomandibular disorders, Stable bite plate, Sodium hyaluronate