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The Chinese Journal of Dental Research

Year 2003
Volume 6 , Issue 4

Pages: 29 - 33

Clinical Investigation of Temporomandibular Joint Blunt Trauma Induced by Mandible Impact

Xue-Jiu Wang/Xu-Chen Ma/Yi Zhang/Wan-Ling Zhang

Objective: To investigate the main types of the blunt trauma of temporomandibular joint (TMJ) induced by mandible impact and to discuss the concept of TMJ traumatic arthritis. Materials and Methods: The radiograph and clinical data of 41 cases with TMJ traumatic arthritis but without condylar fractures was investigated. Results: 70% of the impact sites were mentums and/or mandible angles; all the cases in the present study could be classified as disk disorders, synovitis, myositis of jaw muscle, adhesion, and mixed pathological changes. Conclusion: TMJ blunt trauma is mainly induced by impact at mandible mentum and angle. TMJ traumatic arthritis induced by blunt trauma is mainly mixed pathological changes and a period of one month is suggested as the boundary for acute and chronic traumatic arthritis.



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