ID | 115759 |
著者 |
Kurosawa, Mie
Niigata University
Saitoh, Issei
Niigata University
Iwase, Yoko
Niigata University
Inada, Emi
Kagoshima University
Nogami, Yukiko
Niigata University
Murakami, Nozomi
Niigata University
Shibasaki, Shinji
Niigata University
Murakami, Tomoya
Niigata University
Matsueda, Kazunari
Niigata University
Nakamura, Yuki
Niigata University
Yamasaki, Youichi
Kagoshima University
Hayasaki, Haruaki
Niigata University
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キーワード | balancing side
dynamic occlusal contact area
gum-chewing
multilevel linear model
working side
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資料タイプ |
学術雑誌論文
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抄録 | Objectives: Mastication is a crucial function for the elderly, and promotes oral health status, cognitive function and the physical constitution. Most reports about occlusion patterns and occlusal glide of adults have reported the jaw movement at the lower incisal point due to easiness of evaluating masticatory performance. The purpose of this study was to test the hypothesis that dynamic occlusal contact area (OCA) during chewing differ for each tooth on the working vs. the balancing chewing side.
Design: In thirteen healthy Japanese females, OCA was estimated with a measurement system combining 3-D tracking of mandibular movements with 3-D digitization of tooth shape. Results: The starting of occlusal contact between teeth at working side and balancing side did not differ significantly. In contrast, ending of occlusal contact of teeth at balancing side were markedly longer than that of teeth at working side at lateral incisor, canine, and first premolar. The dynamic sum of OCAs for all teeth was symmetrical around maximum closed position (MCP) when chewing on the working side. In contrast, the dynamic sum of OCA peaked after MCP when chewing on the balancing side. In working and balancing side, sums of maximum OCA at all posterior teeth accounted for 93%, 86% of sum OCA for all teeth at working and balancing sides, respectively. Conclusion: Our result suggested that the hypothesis that dynamic OCA during chewing differ for each tooth on the working vs. the balancing chewing side was not accepted at molars. |
掲載誌名 |
Dental, Oral and Craniofacial Research
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ISSN | 20585314
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出版者 | Open Access Text
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巻 | 4
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号 | 2
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発行日 | 2017-11-09
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権利情報 | This is an open-access article distributed under the terms of the Creative Commons Attribution License(https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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言語 |
eng
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著者版フラグ |
出版社版
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部局 |
歯学系
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