Stress Analysis of Endodontically Treated Anterior Teeth Restored with Different Types of Post Material

• NAKAMURA Takashi

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• OHYAMA Tatsuo

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• WAKI Tomonori

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• KINUTA Soichiro

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• WAKABAYASHI Kazumichi

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• MUTOBE Yoshihiko

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

• TAKANO Naoki

  Department of Micro System Technology, College of Science and Engineering, Ritsumeikan University

• YATANI Hirofumi

  Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry

Abstract

Finite element analysis was performed to evaluate stress distribution in maxillary central incisors treated endodontically and restored with a post and an all-ceramic crown. Tensile stress at tooth root was analyzed using two-dimensional finite element models with different post diameters and lengths. One post length was 1/ 3 of the root (short) , while the other was 2/ 3 of the root (long) ; one post diameter was 1/ 3 of the root (narrow) , while the other was 2/ 3 of the root (wide) . The following combinations were used for posts and cores: gold alloy cast post and core, commercial stainless steel post and resin core, and fiber post and resin core. Results showed that the fiber post produced less stress on the root dentin around the post tip than did the metal posts. This finding thus suggested that to reduce the stresses that cause root fracture, a long, thin fiber post should be used.

Journal

• Dental Materials Journal

  Dental Materials Journal 25 (1), 145-150, 2006

  The Japanese Society for Dental Materials and Devices

Keywords

• Finite element analysis
• Post and core
• Fiber-reinforced composite
• All-ceramic crown

Details

• CRID: 1390001204717120768
• NII Article ID: 110004498269
• NII Book ID: AA10443149
• DOI: 10.4012/dmj.25.145
• COI: 1:STN:280:DC%2BD283nslWmuw%3D%3D
• ISSN: 18811361
• ISSN: 02874547
• ISSN: http://id.crossref.org/issn/02874547
• Web Site: https://www.jstage.jst.go.jp/article/dmj/25/1/25_1_145/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10744825
• Web Site: https://search.jamas.or.jp/link/ui/2007102092
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • NDL-Digital
  • CiNii Articles
• Abstract License Flag: Disallowed