Intra-articular Vitamin D3 Injection for Patients With Temporomandibular Joint Osteoarthritis - NCT07929103

The goal of this clinical trial is to evaluate the efficacy of intra-articular Vitamin D3 injection for the treatment of temporomandibular joint (TMJ) osteoarthritis. The main questions it aims to answer are: is intra-articular Vitamin D3 injection more effective than placebo in the treatment of temporomandibular joint osteoarthritis? . Does it improve secondary clinical outcomes such as pain-free mouth opening and remove TMJ sounds? Researchers will compare Vitamin D3 to a normal saline placebo group to see if intra-articular Vitamin D3 provides therapeutic benefits. Participants will:Undergo a diagnostic evaluation including a questionnaire, clinical examination, and MRI. Receive a single intra-articular injection of either 1 ml of Vitamin D3 (Cholecalciferol 200,000 IU) or 1 ml of normal saline into the superior joint compartment. Attend follow-up visits at two weeks, three months, and six months to assess pain scores, mouth opening, and presence of tmj sound.