著者

鈴木 哲也 熊谷 宏 内田 達郎 吉富 信幸 渡邊 竜登美 石鍋 聡 水口 俊介 関田 俊明 平野 滋三 宮下 健吾 小林 賢一 長尾 正憲

出版者

社団法人 日本補綴歯科学会

雑誌

日本補綴歯科学会雑誌 (ISSN:03895386)

巻号頁・発行日

vol.38, no.2, pp.476-484, 1994-04-01 (Released:2010-08-10)

参考文献数

40

被引用文献数

2 4

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The distribution of occlusal support of 366 aged patients of over 70 years was surveyed and analyzed in this study. Their masticatory abilities were also evaluated by the questionnaire on the masticatory aspects of 20 kinds of foods, and their maximum occlusal forces were measured with the pressure sensitive foil. The relations among masticatory ability, maximum occlusal forces and the distribution of occlusal support were analyzed.The results were as follows.1. 52.8% of the upper and lower dentulous patients had less than 5 occlusal tooth contacts.2. Posterior tooth contacts were less than anterior ones, and even in posterior areas, occlusal contacts tended to be less from the second molar to the first premolar.3. 61.2% of the upper and lower dentulous patients had no occlusal support or only unilateral occlusal support. It is evident that occlusal support is extremely ill-conditioned in elderly patients.4. It was found that if the aged have more occlusal tooth contacts and wider occlusal support areas, they would show better masticatory ability and greater maximum occlusal forces.5. In thier initial visits to our clinic they had poor occlusal support with their dentures.6. It is suggested that occlusal tooth contacts and occlusal support areas should be important for maintaining a healthy oral function in elderly people.

著者

小林 賢一 守澤 正幸 渡邊 竜登美 関田 敏明 長尾 正憲

出版者

社団法人日本補綴歯科学会

雑誌

日本補綴歯科學會雜誌 (ISSN:03895386)

巻号頁・発行日

vol.33, no.1, pp.94-105, 1989-02-01

被引用文献数

1 3

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The purpose of this study was to develop a telemetry system and to analyze the occlusal contacts of complete denture during mastication. The telemetry system consisted of a trans mitter unit and a receiver unit. The transmitter allowed 6 channels of information of the occlusal contacts to be telemetered by time division multiplex communication method within the approximate distance of 2 m. The occlusal surface of the upper complete denture was made of metal and that of the lower denture was made of metal contact plates of 0.5mm in width with each space of 0.5mm. Then the transmitter was embedded in the lower complete denture. Occlusal contacts of 66 aged edentulous male were investigated both on the chewing side and on the nonchewing side in the premolar, the Ist molar and the 2nd molar regions.The results were as followed : 1. The occlusal contacts in the nonchewing side preceded those in the chewing side, with higher frequency and longer duration. 2. In the nonchewing side, the occlusal contact occurred at different time ; the occlusal contact was observed first in the 2nd molar, then 32-48 ms later in the Ist molar, and 2-48 ms later in the premolar regions. 3. It is suggested that the balancing contact should be considered for stabilizing the denture in mastication.