1997 Fiscal Year Final Research Report Summary
Long-term results and clinical evaluation of TMJ surgery for internal derangements of the temporomandibular joint.
| Project/Area Number |
08672299
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Surgical dentistry
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MURAKAMI Kenichiro Kyoto University, Faculty of Medicine Associate Professor, 医学研究科, 助教授 (00174269)
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| Co-Investigator(Kenkyū-buntansha) |
SHIBATA Takanori Yamagata University, Faculty of Medicine Associate Professor, 医学部, 助教授 (60147220)
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| Project Period (FY) |
1996 – 1997
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| Keywords | Temporomandibular / joint, Arthroscopic surqery / Open TMJ surgery |
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| Research Abstract |
We investigated the long-term results of temporomandibular joint (TMJ) open surgery or arthroscopic surgery, and evaluated the functional outcome correlate to the stages of TMJ internal derangement after Wilkes in 1989.
Arthroscopic surgery : Consecutive 56 joints in 41 patient were involved and assessed at least three-years to over five years (4.4 years in an average)follow-up basis. All patients rated their pain level in visual analogue scale, and filled pain, jaw dysfunction, and activity daily limiting questionnaire before, and postoperatives after the surgery. The patients's jaw opening was also scaled. The success rate was also calculated according to our success criteria based on above questionnaire. Results : The overall surgical success rate was 90.2%. In an subdivided staging groups, stage III group showed 85.7%, stage IV-91.7% and stage V-93.3%.
Open surgery : Cumulative 38 joints in 31 patient were assessed at least five-years follow-up basis. The patients consisted with four intermittent locking cases, 22 closed locking cases, and fibe open locking cases. Long-term radiographic assessment revealed that there was acceptable bone remodeling, but there were no severe condylar resorption. Results : The overall success rate was 90.3%.
Conclusion : Both TMJ arthroscopic and open surgery was considered as an effective and reliable surgery for various stage of internal derangement in a long run when appropriate nonsurgical treatment failed to cure the patient.
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