1997 Fiscal Year Final Research Report Summary
Spatial relationip of Temporomandibular joint in cetric relation using Magnet Resonance Image
| Project/Area Number |
08672275
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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 |
補綴理工系歯学
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| Research Institution | Fukuoka Dental College |
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Principal Investigator |
UKON Shinichi Fukuoka Dental College, Dentistry, associate Professor (70038876)
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| Co-Investigator(Kenkyū-buntansha) |
OGATA Toshihiro Fukuoka Dental College, Dentistry, Lecturer (40140876)
HISAMA Kazuhiro Fukuoka Dental College, Dentistry, assistant Professor (00218710)
KAGAWA Toyohiro Fukuoka Dental College, Dentistry, assistant Professor (00258592)
FUKAURA Yuka Fukuoka Dental College, Dentistry, assistant Professor (40279310)
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| Project Period (FY) |
1996 – 1997
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| Keywords | bite registration / centric relation / temporomandibular joint / MRI / spatial relationship / 3-dimensinal Reconstruction / iaw tracking device / touch sensor |
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| Research Abstract |
The decision of the optimum jaw position is one of the most problem in dentistory. Centric relation of the TMJ guided by Gothic arch tracing and Lucia's Jig were examined by MRI. Condyle and disk positions of 10 patients, who need full mouth occusal rerconstruction prosthodontically, and 7 normal subjects with natural dentition were requruted. Both group had no any signs and symtomes of TM disorders. The codylar position at centric relation in normal subjects revealed almost centoroid and no indication of posterior displacement. Disk positioned on the condyle. In contrast, prosthetic patients group, the condyle tended to posterior displacement, not concentrically, compared with normal subject group. However, patient group whoes intercuspal position were coinside with centric relation had no any functional and clinical problems in 2.5 to 4 years after prosthetic treatment.
A 3-dimensional reconstruction of temporomandibular joint were produced using two softwares, Photoshop and NIH Image, and relative simple processing technique. This system can provide accurate figures and positional relationship of TMJ. And also developed electic jaw tracing device using touch sensor and Personal computer.
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