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

55 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
Externally publishedYes

Fingerprint

Gold Alloys
Nonvital Tooth
Tooth Root
Finite Element Analysis
Stainless Steel
Ceramics
Dentin
Incisor
Stress analysis
Crowns
Metals
Fibers
Resins
Gold alloys
Tensile stress
Stress concentration
Stainless steel
Finite element method

Keywords

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

ASJC Scopus subject areas

  • Dentistry(all)
  • Biomaterials

Cite this

Nakamura, T., Ohyama, T., Waki, T., Kinuta, S., Wakabayashi, K., Mutobe, Y., ... 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

Stress analysis of endodontically treated anterior teeth restored with different types of post material. / Nakamura, Takashi; Ohyama, Tatsuo; Waki, Tomonori; Kinuta, Soichiro; Wakabayashi, Kazumichi; Mutobe, Yoshihiko; Takano, Naoki; Yatani, Hirofumi.

In: Dental Materials Journal, Vol. 25, No. 1, 03.2006, p. 145-150.

Research output: Contribution to journalArticle

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, vol. 25, no. 1, pp. 145-150. https://doi.org/10.4012/dmj.25.145
Nakamura, Takashi ; Ohyama, Tatsuo ; Waki, Tomonori ; Kinuta, Soichiro ; Wakabayashi, Kazumichi ; Mutobe, Yoshihiko ; Takano, Naoki ; Yatani, Hirofumi. / Stress analysis of endodontically treated anterior teeth restored with different types of post material. In: Dental Materials Journal. 2006 ; Vol. 25, No. 1. pp. 145-150.
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