ガムそしゃくにおけるこう合接触状態の運動学的解析

• 安陪 晋

  徳島大学大学院歯学研究科歯科補綴学第二講座

書誌事項

タイトル別名

• A Kinetic Analysis of Occlusal Contacts during Masticating Chewing-gum.

抄録

The purpose of this study was to clarify roles of occlusal facets in mastication. Ten adult male volunteers (mean age: 25.7±9.7years) participated in this study. Jaw movement during masticating chew. ing-gum was measured with the 6-degree-of-freedom jaw-tracking device (MM-JI). The relationship between occlusal facet and chewing movement was analyzed by combining the kinetic data and 3-dimensionally measured morphologic data of each subject. The results were as follows:<BR>1. During the grinding phase of mastication, the A and C occlusal facets of the upper and lower jaw molars became close to each other and formed the so-called squeezing room first. Then, the B occlusal facets of both jaws became close to each other as the volume of squeezing room was reduced (The A, B, and C occlusal facets correspond to the A, B, and C contacts of tripodization proposed by Thomas PK).<BR>2. Vector analysis revealed that jaw movement in the grinding phase of mastication was guided by the A or C occlusal facets and that the angle of jaw movement vector to the B occlusal facet of the opposite jaw was approximately 30°.<BR>The results suggested that the newly-developed analyzing method was effective for evaluating the occlusal condition during function.

収録刊行物

• 日本補綴歯科学会雑誌

  日本補綴歯科学会雑誌 44 (2), 274-283, 2000

  社団法人 日本補綴歯科学会

キーワード

• occlusal facet
• mastication
• kinetic analysis of occlusal contacts
• squeezing room
• A/B ratio

詳細情報

• CRID: 1390282679387056512
• NII論文ID: 10008155305
• NII書誌ID: AN00197911
• DOI: 10.2186/jjps.44.274
• ISSN: 1883177X
• ISSN: 03895386
• ISSN: http://id.crossref.org/issn/03895386
• Web Site: http://www.jstage.jst.go.jp/article/jjps1957/44/2/44_2_274/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2000201867
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可