軟質裏装材が床下組織の応力分布に及ぼす影響　　接触要素を導入した有限要素解析

DOI Web Site 被引用文献8件 参考文献46件
  • 巫 春和
    東京医科歯科大学歯学部高齢者歯科学講座

書誌事項

タイトル別名
  • Influence of a Soft Lining Material on the Stress Distributions in Denture-supporting Tissues. The Finite Element Analysis Using the Contact Elements.
  • The Finite Element Analysis Using the Contact Elements
  • 接触要素を導入した有限要素解析

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The stress and strain distributions in denture-supporting tissues when using a soft lining material were evaluated by the finite element method. The finite element model consisted of a mandibular occlusion rim, mucosa, cortical bone, and cancellous bone. Gap and truss elements were employed as the contact elements in order to simulate the dynamic behavior between the occlusion rim and mucosa.<BR>The results were as follows:<BR>1. By applying the contact elements to construct the contact relation between the occlusion rim and mucosa, the components of upward stress and strain in mucosa were eliminated. The displacement of the occlusion rim was minimized, although it was expected to be excessively increased by using the contact elements.<BR>2. The stress components in denture-supporting tissues under the occlusion rim with soft lining material were reduced and distributed more evenly than those without lining.<BR>3. The strain components in denture-supporting tissues under the occlusion rim with soft lining material were also reduced and distributed more evenly than those without lining.<BR>The results demonstrated that gap and truss elements are valid contact elements for the finite element analysis. Furthermore, they indicated that complete dentures lined with a soft lining material can relieve and distribute the stress and the strain in denture-supporting tissues.

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