Resin composite repair for implant-supported crowns

Estevam A. Bonfante, Marcelo Suzuki, Ronaldo Hirata, Gerson Bonfante, Vinicius P. Fardin, Paulo Coelho

Research output: Contribution to journalArticle

Abstract

This study evaluated the reliability of implant-supported crowns repaired with resin composites. Fifty-four titanium abutments were divided in three groups (n = 18 each) to support resin nanoceramic molar crowns, as follows: (LU) (Lava Ultimate, 3M ESPE); LU repaired with either a direct or an indirect resin composite. Samples were subjected to mouth-motion accelerated-life testing in water (n = 18). Cumulative damage with a use stress of 300 N was used to plot Weibull curves for group comparison. Reliability was calculated for a mission of 100,000 cycles at 400 N load. Beta values were 0.83 for LU, 0.31 and 0.27 for LU repaired with Filtek and Ceramage, respectively. Weibull modulus for LU was 9.5 and η = 1047 N, m = 6.85, and η = 1002 N for LU repaired with Ceramage, and m = 4.65 and η = 766 N for LU repaired with Filtek (p <0.10 between LU and LU repaired with Filtek). Reliability at 400 N was 100% for both LU and LU repaired with Ceramage which were significantly higher than LU Filtek repair (32%). LU restored crowns failed cohesively. Fractures were confined within the restored material, and detailed fractography is presented. The performance of resin nanoceramic material repaired with an indirect composite was maintained after accelerated-life testing compared to unrepaired controls.

Original languageEnglish (US)
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
DOIs
StateAccepted/In press - 2016

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Composite Resins
Repair
Resins
Composite materials
Fractography
Testing
Titanium
Water
ceramage

Keywords

  • Crown
  • Dental implant
  • Fatigue
  • Fractography
  • Repair
  • Resin composites

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biomaterials

Cite this

Resin composite repair for implant-supported crowns. / Bonfante, Estevam A.; Suzuki, Marcelo; Hirata, Ronaldo; Bonfante, Gerson; Fardin, Vinicius P.; Coelho, Paulo.

In: Journal of Biomedical Materials Research - Part B Applied Biomaterials, 2016.

Research output: Contribution to journalArticle

Bonfante, Estevam A. ; Suzuki, Marcelo ; Hirata, Ronaldo ; Bonfante, Gerson ; Fardin, Vinicius P. ; Coelho, Paulo. / Resin composite repair for implant-supported crowns. In: Journal of Biomedical Materials Research - Part B Applied Biomaterials. 2016.
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AU - Coelho, Paulo

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