Intensity of Singular Stress Field due to Wedge-Shaped Defect in Human Tooth after Restored with Composite Resins : Influence of the Stiffness of the Composite Resin

• NODA Nao-Aki

  Department of Mechanical Engineering, Kyushu Institute of Technology

• CHEN Ker-Kong

  九州歯科大学歯科保存学第1講座

• TAJIMA Kiyoshi

  九州歯科大学生体材科分野

• TAKASE Yasushi

  九州工業大学工学部

• YAMAGUCHI Kyosuke

  九州工業大学大学院工学府

• NAGANO Hiroyuki

  九州工業大学工学部

Bibliographic Information

Other Title

• ヒトの歯に生じたくさび状欠損修復後の咬合により生じる特異応力場の強さ : コンポジットレジンの剛性の影響
• ヒト ノ ハ ニ ショウジタ クサビ ジョウ ケッソン シュウフク ゴ ノ コウゴウ ニ ヨリ ショウジル トクイ オウリョクバ ノ ツヨサ コンポジットレジン ノ ゴウセイ ノ エイキョウ

Abstract

Wedge-shaped defects are frequently observed on the cervical region of the human tooth. Previously, most studies explained that such defects are caused by improper toothbrushing. However, recent clinical observation suggested that the repeated stress originated from occlusal force may induce the formation of wedge-shaped defects. In this study, therefore, two-dimensional human tooth model after the wedge-shaped defect is restored with composite resin is analyzed by using the finite element method. To obtain the intensity of the singular stress accurately, a method of analysis is discussed for calculating generalized stress intensity factors, which control the singular stress around the tip of the defect. Finally, the relationships between the stress intensity and occlusion are discussed. It is found that large occlusal forces perpendicular to the tooth axis are harmful to the resin that is bonded to dentin.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 75 (757), 1209-1216, 2009

  The Japan Society of Mechanical Engineers

Keywords

• Elasticity
• Biomechanics
• Fracture Mechanics
• Finite Element Method
• Wedge-Shaped Defect
• Human Tooth

Details

• CRID: 1390282679454278656
• NII Article ID: 110007358712
• NII Book ID: AN0018742X
• DOI: 10.1299/kikaia.75.1209
• ISSN: 18848338
• ISSN: 03875008
• HANDLE: 10228/4608
• NDL BIB ID: 10447292
• Web Site: https://kyutech.repo.nii.ac.jp/records/3474
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10447292
• Web Site: https://www.jstage.jst.go.jp/article/kikaia1979/75/757/75_KJ00005697198/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed