Effect of Thermocycling Times on Dentin Bond Strength bond

Karen M. Burger, Robert L. Cooley, Franklin Garcia-Godoy

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Thermocycling is widely used in the evaluation of dentin bonding agents. The purpose of this study was to determine the effect of increasing thermocycling times on the shear bond strength of composite resin to dentin using a NTG‐GMA/BPDM‐type bonding agent. Fifty human molar teeth were ground fiat on the buccal surface into dentin (600 grit). Ten specimens were prepared for each thermocycling group of 100,500,1000,2000, and 4000 cycles. The adhesive agent was applied to the dentin according to the manufacturer's instructions. A cyclindrical‐shaped matrix was used to form the composite resin that was light cured to the treated dentin surface for 60 seconds. Thermocycling was started after 24 hours of storage in deionized water at 37°C. Shear bond strengths were determined with an Instron universal testing machine at a cross‐head speed of 0.5 mm per minute. The bond strengths in megapascals (MPa) were: 100 cycles 18.1 (± 5.2) MPa, 500 cycles 19.4 (± 4.0) MPa, 1000 cycles 16.5 (± 2.9), 2000 cycles 14.6 (± 5.1), and 4000 cycles 19.9 (± 3.2) MPa. When this data was subjected to an ANOVA, no significant difference was found between the groups.

Original languageEnglish (US)
Pages (from-to)197-198
Number of pages2
JournalJournal of Esthetic and Restorative Dentistry
Volume4
Issue number6
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

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Dentin
Shear Strength
Composite Resins
Dentin-Bonding Agents
Cheek
Adhesives
Analysis of Variance
Tooth
Light
Water

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Effect of Thermocycling Times on Dentin Bond Strength bond. / Burger, Karen M.; Cooley, Robert L.; Garcia-Godoy, Franklin.

In: Journal of Esthetic and Restorative Dentistry, Vol. 4, No. 6, 01.01.1992, p. 197-198.

Research output: Contribution to journalArticle

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