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Evaluation of different types of enamel conditioning before application of a fissure sealant

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Abstract

The aim of the study was to compare fissure sealant quality after mechanical conditioning of erbium-doped yttrium aluminium garnet (Er:YAG) laser or air abrasion prior to chemical conditioning of phosphoric acid etching or of a self-etch adhesive. Twenty-five permanent molars were initially divided into three groups: control group (n = 5), phosphoric acid etching; test group 1 (n = 10), air abrasion; and test group 2, (n = 10) Er:YAG laser. After mechanical conditioning, the test group teeth were sectioned buccolingually and the occlusal surface of one half tooth (equal to one sample) was acid etched, while a self-etch adhesive was applied on the other half. The fissure system of each sample was sealed, thermo-cycled and immersed in 5 % methylene dye for 24 h. Each sample was sectioned buccolingually, and one slice was analysed microscopically. Using specialized software microleakage, unfilled margin, sealant failure and unfilled area proportions were calculated. A nonparametric ANOVA model was applied to compare the Er:YAG treatment with that of air abrasion and the self-etch adhesive with phosphoric acid (α = 0.05). Test groups were compared to the control group using Wilcoxon rank sum tests (α = 0.05). The control group displayed significantly lower microleakage but higher unfilled area proportions than the Er:YAG laser + self-etch adhesive group and displayed significantly higher unfilled margin and unfilled area proportions than the air-abrasion + self-etch adhesive group. There was no statistically significant difference in the quality of sealants applied in fissures treated with either Er:YAG laser or air abrasion prior to phosphoric acid etching, nor in the quality of sealants applied in fissures treated with either self-etch adhesive or phosphoric acid following Er:YAG or air-abrasion treatment.

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Acknowledgments

The authors would like to thank S. Hayoz and Prof. Dr. J. Hüsler, Institute of Mathematical Statistics and Actuarial Science, University of Bern for statistical analyses.

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Authors and Affiliations

  1. Department of Operative, Preventive and Paediatric Dentistry, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland

    Philip Ciucchi, Klaus W. Neuhaus, Anne Peutzfeldt & Adrian Lussi

  2. Department of Maxillofacial Surgery and Dental Surgery, Medical University of Gdansk, Al. Zwycięstwa 41/42, 80-210, Gdańsk, Poland

    Marta Emerich

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  1. Philip Ciucchi
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  2. Klaus W. Neuhaus
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Correspondence to Philip Ciucchi.

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Ciucchi, P., Neuhaus, K.W., Emerich, M. et al. Evaluation of different types of enamel conditioning before application of a fissure sealant. Lasers Med Sci 30, 1–9 (2015). https://doi.org/10.1007/s10103-013-1333-2

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  • DOI: https://doi.org/10.1007/s10103-013-1333-2

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