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Evaluation of a clinical preventive treatment using Er,Cr:YSGG (2780 nm) laser on the susceptibility of enamel to erosive challenge

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Abstract

The purpose of this in vitro study was to evaluate the effect of a clinical preventive treatment using Er,Cr:YSGG laser irradiation on bovine enamel susceptibility after erosive challenge. Twelve sound bovine incisors were used and twenty-four enamel specimens were prepared in total. Two experimental groups (n = 12) were assigned as follows: Group 1 was the control group and in Group 2, the enamel specimens were irradiated with an Er,Cr:YSGG (2780 nm) laser system for 20 s, with average output power of 0.25 W, pulse repetition rate at 20 Hz without water or air flow and the pulse duration was fixed at 140 μsec. The tip diameter was 600 μm, the tip to tissue distance was 1 mm, the speed of handpiece movement was 2 mm/s, the power density was 88.34 W/cm2, and the fluence was 31.25 J/cm2. The specimens were submitted to erosive challenge using a common soft drink. Surface microhardness changes, surface roughness changes, and surface loss were evaluated after erosive challenge. The data were statistically analyzed using one-way ANOVA and Tukey’s post-hoc test at a level of significance a = 0.05. Er,Cr:YSGG laser-treated enamel exhibited significantly less decrease in surface microhardness and significant less surface loss compared to control enamel after the erosive challenge (p < 0.05). The experimental groups did not show significant differences in surface roughness increase after the erosive challenge (p > 0.05). Er,Cr:YSGG laser treatment may be promising for the limitation of enamel erosive tooth wear induced by excessive consumption of soft drinks. Clinical studies are needed to clarify whether this protective effect is clinically significant.

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Acknowledgments

The authors would like to thank Dr. Stavros Oikonomidis for his technical support to SEM observations and EDS analysis of the enamel specimens for the purposes of this study, which were performed at Solid State Physics Division, Department of Physics, Aristotle University of Thessaloniki, Greece. In addition, the authors acknowledge with thanks Dr. Alexandros Nikolaidis for his help with surface roughness and loss measurements, which were implemented at the Department of Basic Dental Sciences, Division of Dental Tissues Pathology and Therapeutics, School of Dentistry, Aristotle University of Thessaloniki, Greece.

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Authors and Affiliations

  1. Department of Operative Dentistry, School of Dentistry, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

    Dimitrios Dionysopoulos, Kosmas Tolidis, Dimitrios Strakas & Thrasyvoulos Sfeikos

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  1. Dimitrios Dionysopoulos
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  2. Kosmas Tolidis
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  3. Dimitrios Strakas
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  4. Thrasyvoulos Sfeikos
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Correspondence to Dimitrios Dionysopoulos.

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Dionysopoulos, D., Tolidis, K., Strakas, D. et al. Evaluation of a clinical preventive treatment using Er,Cr:YSGG (2780 nm) laser on the susceptibility of enamel to erosive challenge. Lasers Med Sci 34, 1089–1097 (2019). https://doi.org/10.1007/s10103-018-2679-2

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  • DOI: https://doi.org/10.1007/s10103-018-2679-2

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