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Year : 2015  |  Volume : 6  |  Issue : 2  |  Page : 82-86

Comparative assessment of bond strengths of affected dentin, using two different remineralizing solutions with or without lasers: Results of an in vitro pilot study

Dr. D. Y. Patil Dental College and Hospital, Pimpri, Pune, Maharashtra, India

Correspondence Address:
Shirin P Kshirsagar
Dr. D. Y. Patil Dental College and Hospital, Pimpri, Pune, Maharashtra
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DOI: 10.4103/0976-433X.155461

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Aims: Assessing remineralization and bond strengths of remineralizing agents with or without LASERS. Settings and Design: In vitro pilot study. Materials and Methods: Artificial caries-like lesion was created with 10% citric acid in 50 non carious extracted posterior teeth which were divided into six groups according to treatment: GC Tooth Mousse and Toothmin cream with or without LASER, positive and negative control. Remineralization was done for 5 min every day for 7 days. Microhardness test was repeated. Pulsed Nd:YAG Laser (1.064 çm wavelength) was used with a focused beam at 1W and 15 Hz for 10 s on exposed dentin surface. Samples were etched with etching gel for 15 s and rinsed with water for 30 s. Bonding composite restoration of 4 mm height was done with Mylar Strip. Tensile bond strength was calculated. Statistical Analysis: Student's paired t-test evaluated difference between mean values of microhardness. Student's unpaired t-test evaluated the difference between mean values of bond strengths between groups. Results: Significant difference in microhardness in HV (50 g load) was seen in all groups (P < 0.05 for all). LASER Toothmin groups showed the highest increase (311.17%) in microhardness in HV (50 g load) as compared to other groups (GC-255.11%, LASER GC-255.42%, Toothmin 250.34%). Shear bond strength of the LASER-treated Toothmin was significantly higher compared to other groups (P = 0.0021). Conclusions: Toothmin and GC Mousse with or without LASER were found to be effective in increasing mineralization. Bond strength of Toothmin with LASER treatment was higher compared to others.

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