The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth

Ayaka Chiba, Takashi Hatayama, Kimisuke Kainose, Masatoshi Nakajima, David Henry Pashley, Noriyuki Wakabayashi, Junji Tagami

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study aimed to investigate shear stress distributions in resin built-up teeth using resin composites of varying elastic moduli (E), with or without fiber posts. Three-dimensional mathematical models of a root-filled mandibular premolar tooth were constructed. Resin post and cores were built-up with resin composites of three different E: 12,000, 18,000 and 24,000 MPa, with or without fiber posts. Finite element linear analysis was performed to calculate shear stress distributions at bonding interface between resin core and dentin. Regardless of fiber post insertion, the shear stress on the cervical surface of resin core decreased as the E of resin composites increased. Insertion of fiber posts increased the shear stress on the post surface of resin core, with increases in the E of resin composites. In conclusion, using resin core materials with higher E decreased the shear stress at cervical interface between resin core and dentin regardless of fiber post insertion.

Original languageEnglish (US)
Article numberdmj/2016-160
Pages (from-to)95-102
Number of pages8
JournalDental Materials Journal
Volume36
Issue number1
DOIs
StatePublished - Jan 1 2017

Fingerprint

Composite Resins
Elastic Modulus
Adhesives
Stress concentration
Shear stress
Tooth
Resins
Elastic moduli
Dentin
Fibers
Finite Element Analysis
Bicuspid
Theoretical Models
Composite materials
Mathematical models

Keywords

  • Debonding
  • Elastic modulus
  • Fiber post
  • Finite element analysis
  • Resin composite

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

Cite this

Chiba, A., Hatayama, T., Kainose, K., Nakajima, M., Pashley, D. H., Wakabayashi, N., & Tagami, J. (2017). The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth. Dental Materials Journal, 36(1), 95-102. [dmj/2016-160]. https://doi.org/10.4012/dmj.2016-160

The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth. / Chiba, Ayaka; Hatayama, Takashi; Kainose, Kimisuke; Nakajima, Masatoshi; Pashley, David Henry; Wakabayashi, Noriyuki; Tagami, Junji.

In: Dental Materials Journal, Vol. 36, No. 1, dmj/2016-160, 01.01.2017, p. 95-102.

Research output: Contribution to journalArticle

Chiba, A, Hatayama, T, Kainose, K, Nakajima, M, Pashley, DH, Wakabayashi, N & Tagami, J 2017, 'The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth', Dental Materials Journal, vol. 36, no. 1, dmj/2016-160, pp. 95-102. https://doi.org/10.4012/dmj.2016-160
Chiba, Ayaka ; Hatayama, Takashi ; Kainose, Kimisuke ; Nakajima, Masatoshi ; Pashley, David Henry ; Wakabayashi, Noriyuki ; Tagami, Junji. / The influence of elastic moduli of core materials on shear stress distributions at the adhesive interface in resin built-up teeth. In: Dental Materials Journal. 2017 ; Vol. 36, No. 1. pp. 95-102.
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