歯の接触関係がこう筋，側頭筋の活動に及ぼす影響　第１報　総活動量とこう頭かん合位における最大こうみしめ値に対する比率（ＩＰ比）

DOI Web Site PubMed 被引用文献2件
  • 水谷 紘
    東京医科歯科大学歯学部第1歯科補綴学教室
  • 篠ヶ谷 龍哉
    東京医科歯科大学歯学部第1歯科補綴学教室
  • 曽根田 兼司
    東京医科歯科大学歯学部第1歯科補綴学教室
  • 礒 和博
    東京医科歯科大学歯学部第1歯科補綴学教室
  • 藍 稔
    東京医科歯科大学歯学部第1歯科補綴学教室

書誌事項

タイトル別名
  • Influence of tooth contacts on masseter and temporal muscle activity. Part I. Total activity and its ratio to maximum biting activity in intercuspal position(IP ratio).
  • Part I Total Activity and Its Ratio to Maximum Biting Activity in Intercuspal Position (IP Ratio)
  • 第1報総活動量と咬頭嵌合位における最大咬みしめ値に対する比率 (IP比)

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14 natural dentitioned subjects with no signs of TMJ disorders, aged 19-58, were used in this study. They were divided into three groups according to their occlusal guidance. One is canine guidance group (CG group), the other is group function group (GF group), and the last is group having non-working side contacts (FB group). All subjects were asked to perform maximum biting in 1) intercuspal position (IP), 2) right lateral position (rLP), 3) left lateral position (1LP), 4) retruded position (RP), and 5) protruded position (PP). EMG recordings of right and left masseter, anterior and posterior temporal muscles from pairs of surface electrodes were taken in each occluded position. The results were as follows:<BR>1) Total integrated EMG activity of FB group was approximately equal in any occluded position, whereas that of CG and GF group varied from position to position.<BR>2) EMG patterns in rLP and lLP of CG group were obviously different from those of GF group. Ratio to maximum biting in IP of CG group in rLP and lLP were significantly small, approximately half of GF group.

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