直近一年間の累計
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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
キーワード
balancing side
dynamic occlusal contact area
gum-chewing
multilevel linear model
working side
資料タイプ
学術雑誌論文
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
ISSN
20585314
出版者
Open Access Text
4
2
発行日
2017-11-09
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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フルテキストファイル
docr_4_2.pdf 1.44 MB
言語
eng
著者版フラグ
出版社版
部局
歯学系