Occlusal contact and mechanosensitive threshold of patients with uncomfortable occlusion
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概要
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We attempted to elucidate the pathogeneses in patients with uncomfortable occlusion. To set the reference ranges for the periodontal mechanosensitive thresholds (PMT), we selected 40 subjects (26 males and 14 females) with a mean age of 25±3 years who had normal occlusal contact in the intercuspal position (ICP). They were examined using the add-picture method and, measurement of the PMT was performed using von Frey's hairs. The reference ranges for the PMT were calculated by parametric methods. Next, we selected six subjects (2 males and 4 females) with a mean age of 43+11 years who complained of discomfort during occlusion. Occlusal contacts in the ICP were observed by the add-picture method. The PMT was measured in the aforementioned manner. The measurement of static and moving two-point discrimination thresholds (s-2 PD and m-2 PD, respectively) and the Semmes-Weinstein monofilament test were performed using a 2-PD discriminator and von Frey's hairs, respectively. The measurement sites were the regions served by the trigeminal nerve. None of the subjects with uncomfortable occlusion had simultaneous bilateral equal molar contact. One patient had deviations in both the maxilla and mandible (Group A), another patient had deviations only in the maxilla (Group B), and the remaining four patients had no deviations from the reference ranges (Group C). Moreover, the subject in Group A had significant deviations from the reference ranges in all trigeminal nerve regions. These results suggest that some patients with uncomfortable occlusion have perceptual problems.
著者
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Tanaka Masahiro
Department of Fixed Prosthodontics and Occlusion, Osaka Dental University
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Kawazoe Takayoshi
Department of Fixed Prosthodontics and Occlusion, Osaka Dental University
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Tanaka Masahiro
Graduate School Of Dentistry (department Of Fixed Prosthodontics And Occlusion) Osaka Dental Univers
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Tanaka M
Osaka Dental Univ. Osaka Jpn
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Tanaka Masahiro
Dept. Of Toxicology Fuji Research Laboratoris Kowa Co. Ltd.
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Tanaka J
Department Of Fixed Prosthodontics And Occlusion Osaka Dental University
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Tanaka Junko
Department Of Biotechnology Graduate School Of Engineering Osaka University
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Tatsuta Mitsuhiro
Department Of Fixed Prosthodontics And Occlusion Osaka Dental University
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Tanaka M
Graduate School Of Dentistry (department Of Fixed Prosthodontics And Occlusion) Osaka Dental Univers
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Tatsuta M
Department Of Fixed Prosthodontics And Occlusion Osaka Dental University
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Kawazoe T
Department Of Fixed Prosthodontics And Occlusion Osaka Dental University
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Kawazoe Takayoshi
Department Fixed Prosthodontics And Occlusion Osaka Dental University
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Tanaka Masahiro
Department Fixed Prosthodontics And Occlusion Osaka Dental University
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Mukai Norio
Graduate School Of Dentistry (department Of Fixed Prosthodontics And Occlusion) Osaka Dental University
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TANAKA Masahiro
Department of Physics, Tohoku University
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