Shear bond strength of composite to demineralized enamel conditioned with resin infiltration

Authors

  • Sebahat Melike Durukan Altinbas University Faculty of Dentistry
  • Burak Gümüştaş Assistant Professor
  • Soner Şişmanoğlu Assosiate Professor

DOI:

https://doi.org/10.5577/intdentres.441

Keywords:

enamel, bond strength, composite resin, resin infiltration, demineralization

Abstract

Aim: The aim of this in vitro study was to evaluate the influence of resin infiltration on bond-strength of composite resin to demineralized enamel.

Methodology: Thirty bovine incisors were used in this study. Buccal enamel surfaces of bovine incisors were wet polished and then were divided into three groups: sound enamel; demineralized enamel; demineralized enamel infiltrated with a low-viscosity resin (ICON, DMG, Hamburg, Germany). After acid-etching with 37% phosphoric acid for 20 seconds, a two-step, total-etch adhesive (Single Bond 2, 3M ESPE, St. Paul, MN, USA) was applied using a microbrush for 20 seconds, followed by gentle air-drying for 5 seconds. The adhesive was light-cured for 10 seconds. Following the adhesive application, flowable composite resin (Filtek Supreme Flowable, 3M ESPE, St. Paul, MN, USA) was gently placed into a microtubule and was photopolymerized using an LED curing unit (Elipar Deep Cure; 3M ESPE, St. Paul, MN, USA). The microshear bond strength (µSBS) tests were performed using a microshear testing machine at a cross-head speed of 0.5 mm/min. One-way ANOVA and Bonferroni tests were used to analyze the data (5%).

Results: Significant differences were found according to the ANOVA (p < 0.05). Pair-wise comparison results of µSBS (mean ± SD) were: sound enamel (25.16 ± 2.3); demineralized enamel (17.93 ± 2.1); demineralized enamel infiltrated with a low-viscosity resin (28.51 ± 3.76).

Conclusion: Resin infiltration applied to demineralized enamel before composite application increased the bond strength. No difference was found in the bond strength values obtained for sound enamel and resin infiltrated enamel.

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Published

31-12-2022
CITATION

How to Cite

Durukan, S. M., Gümüştaş, B., & Şişmanoğlu, S. (2022). Shear bond strength of composite to demineralized enamel conditioned with resin infiltration. International Dental Research, 12(Suppl. 1), 114–119. https://doi.org/10.5577/intdentres.441