Effect of punch and orifice base sizes in different push-out test setups

Stress distribution analysis

Rayssa Ferreira Zanatta, Bruno de Castro Ferreira Barreto, Tathy Aparecida Xavier, Antheunis Versluis, Carlos José Soares

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Purpose: This study evaluated the influence of punch and base orifice diameters on push-out test results by means of finite element analysis (FEA). Materials and Methods: FEA was performed using 3D models of the push-out test with 3 base orifice diameters (2.5, 3.0, and 3.5 mm) and 3 punch diameters (0.5, 1.0, and 1.5 mm) using MARC/MENTAT (MSC. Software). The image of a cervical slice from a root restored with a fiberglass post was used to construct the models. The mechanical properties of dentin, post, and resin cement were obtained from the literature. Bases and punches were constructed as rigid bodies. A 10-N force was applied by the punch in the center of the post in a nonlinear contact analysis. Modified von Mises stress, maximum principal stress, as well as shear and normal stress components were calculated. Results: Both punch and base orifice sizes influenced the stress distribution of the push-out test. Bases with larger diameters and punches with smaller diameters caused higher stress in dentin and at the dentin/cement interface. Conclusion: FEA showed that the diameter of the orifice base had a more significant influence on the stress distribution than did the punch diameter. For this reason, both factors should be taken into account during push-out experimental tests.

Original languageEnglish (US)
Pages (from-to)45-50
Number of pages6
JournalJournal of Adhesive Dentistry
Volume17
Issue number1
DOIs
StatePublished - Jan 1 2015

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Finite Element Analysis
Dentin
Exercise Test
Resin Cements
Software

All Science Journal Classification (ASJC) codes

  • Orthodontics
  • Oral Surgery
  • Periodontics

Cite this

Effect of punch and orifice base sizes in different push-out test setups : Stress distribution analysis. / Zanatta, Rayssa Ferreira; Barreto, Bruno de Castro Ferreira; Xavier, Tathy Aparecida; Versluis, Antheunis; Soares, Carlos José.

In: Journal of Adhesive Dentistry, Vol. 17, No. 1, 01.01.2015, p. 45-50.

Research output: Contribution to journalArticle

Zanatta, Rayssa Ferreira ; Barreto, Bruno de Castro Ferreira ; Xavier, Tathy Aparecida ; Versluis, Antheunis ; Soares, Carlos José. / Effect of punch and orifice base sizes in different push-out test setups : Stress distribution analysis. In: Journal of Adhesive Dentistry. 2015 ; Vol. 17, No. 1. pp. 45-50.
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