Stress analysis of endodontically treated anterior teeth restored with different types of post material

Takashi Nakamura, Tatsuo Ohyama, Tomonori Waki, Soichiro Kinuta, Kazumichi Wakabayashi, Yoshihiko Mutobe, Naoki Takano, Hirofumi Yatani

Research output: Contribution to journalArticle

59 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)145-150
Number of pages6
JournalDental Materials Journal
Volume25
Issue number1
DOIs
Publication statusPublished - 2006 Mar 1
Externally publishedYes

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Keywords

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

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

Cite this

Nakamura, T., Ohyama, T., Waki, T., Kinuta, S., Wakabayashi, K., Mutobe, Y., Takano, N., & Yatani, H. (2006). Stress analysis of endodontically treated anterior teeth restored with different types of post material. Dental Materials Journal, 25(1), 145-150. https://doi.org/10.4012/dmj.25.145