著者

杉崎 正志 鈴木 公仁子 伊介 昭弘 田辺 晴康 加藤 征

出版者

特定非営利活動法人 日本口腔科学会

雑誌

日本口腔科学会雑誌 (ISSN:00290297)

巻号頁・発行日

vol.39, no.1, pp.52-63, 1990-01-10 (Released:2011-09-07)

参考文献数

39

被引用文献数

6

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908 Japanese dry skulls (3-84y) were investigated its masticatory parts about sex dimorphism. They were not cured their caries and defect of teeth.ResultsMale condylar breadth and M. masseter origin length were wider than these of female in over 20 years old groups, and were caused by their functional discrimination. Edentulous group reduced their breadth and length, especially in condylar breadth. Old edentulous group indicated morphological non-sexual dimorphism. Male number of loss of teeth were same as female. Attrition showed functional discrimination between male and female, but we could not clearly that of causes. Bite relation of anterior teeth were pointed out their sex differences, and results of attrition were under consideration, we thought that the teeth application or use differed between male and female. It was caused by functional decline and effect of sex hormones that old female edentulous showed reduction of condylar breadth and M. masseter origin length.

著者

杉崎 正志 鈴木 公仁子 伊介 昭弘 田辺 晴康 加藤 征

出版者

特定非営利活動法人 日本口腔科学会

雑誌

日本口腔科学会雑誌 (ISSN:00290297)

巻号頁・発行日

vol.39, no.2, pp.287-301, 1990-04-10 (Released:2011-09-07)

参考文献数

24

被引用文献数

2

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The greatest care must be paid in discussing a possible cause of temporomandibular joint disorders because there were sexal difference and changes with aging in the masticatory structure as described in Part 1. The purpose of this part is to clarify the sexal difference and changes with aging of the temporomandibular bone surface and to elucidate the effect of masitication on the temporomandibular bone changes.Results: Bone changes frequently occured at the lateral side of the condyle, lateral and central sides of the eminence and in a central part of the anterior slope of the eminence. Old females showed a higher score of changing than males with a significant difference between them. Molar or posterior tooth defect had an influence on the condyle and temporal component changes in the young. Progressed attrition with aging influenced on the changes of the temporal component bone surface in males. The temporomandibular joint in males showed a relative stability from the end of growth period to 30 years of age, but females showed no stability throughout the life including growth period. Edentulous changes were caused by aging and loss of teeth so long as this study concened.