Journal of Conservative Dentistry
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ORIGINAL ARTICLE
Year : 2019  |  Volume : 22  |  Issue : 5  |  Page : 470-474

The comparative evaluation of shear bond strength of a bioactive material to different universal bonding agents – An in vitro study


Department of Conservative Dentistry and Endodontics, SDM College of Dental Sciences and Hospital, A Constituent College of Sri Dharmasthala Manjunatheshwara University, Dharwad, Karnataka, India

Correspondence Address:
Dr. Amulya Vittal Rai
Department of Conservative Dentistry and Endodontics, SDM College of Dental Sciences and Hospital, A Constituent College of Sri Dharmasthala Manjunatheshwara University, Sattur, Dharwad - 580 009, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JCD.JCD_84_20

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Background: An ideal dental repair material should possess certain important properties such as adequate adhesive ability, insolubility, dimensional stability, biocompatibility, and bioactivity. Newer materials claiming better performance are continuously being introduced in the market to optimize the care of dental patients. Aim: The aim of this study was to evaluate the shear bond strength of three different universal adhesives to OrthoMTA. Materials and Methods: Sixty-four specimens of OrthoMTA measuring 4 mm internal diameter and 2 mm height were prepared and divided into two main groups. After 12 min, 32 samples were randomly selected and divided into four subgroups of eight samples each. Subgroup-I: Single Bond Universal, Subgroup-II: Prime-and-Bond NT, Subgroup-III: Palfique Universal bond, Subgroup-IV: Control. After the application of adhesives, the composite resin was applied using a cylindrical plastic matrix of 2 mm internal diameter and 2 mm height over OrthoMTA. This procedure was repeated 24 h after mixing an additional 32 samples, respectively. Shear bond strengths were measured using Universal testing machine and fractured specimen were examined under stereomicroscope. Data were statistically analyzed using a two-way ANOVA test and Tukey's multiple post hoc test. Results: Statistical analysis revealed that subgroup-III exhibited higher bond strength at both 12 min and 24 h time intervals. It was also observed that most of the failures occurred cohesively within OrthoMTA. Conclusion: Shear bond strength was higher at 24 h than compared to 12 min. Subgroup-III exhibited higher bond strength than other subgroups.


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