2006 Fiscal Year Final Research Report Summary
Effects of noxious stimulous upon interaction between autonomic nervous system and oral function.
| Project/Area Number |
17592136
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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 |
Orthodontic/Pediatric dentistry
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| Research Institution | Osaka University |
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Principal Investigator |
YASHIRO Kohtaro Osaka University, Graduate school of dentistry, Associate Professor, 大学院歯学研究科, 助教授 (10303976)
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| Co-Investigator(Kenkyū-buntansha) |
TAKADA Kenji Osaka University, Graduate school of dentistry, Professor, 大学院歯学研究科, 教授 (50127247)
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| Project Period (FY) |
2005 – 2006
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| Keywords | TMJD / oro-facial function / condyle / autonomic nervous system / masticatory motion / 6DOF motion |
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| Research Abstract |
Aim :
The aim of the study was to investigate biomechanical relationship between asymmetry of human temporom andibular joint/occclusal scheme and the TMJ loading.
Subjects :
Ten female subjects with acceptable good occlusion participated in this study.
Methods :
By means of the 6DOF motion capture system, occlusal force, occlusal area and the 6DOF mandibular motion were simultaneously recorded. In each subject, gum-chewing was performed with/without insertion of artificial occlusal interference at the molar occlusal surface on the habitual chewing side.
Results :
The insertion of the occlusal interference increased the velocity of mandibular rotation around the antero-posterior axis (Roll angle). In addition, the interference increased the variation of the movement of the condylar surface along the meiolateral direction.
Conclusions :
The results suggested that the interaption of the occlusal balancing contact may cause the derangement of the TMJ.
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