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Evaluation of the effects of Er:YAG laser, Nd:YAG laser, and two different desensitizers on dentin permeability: in vitro study

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Abstract

The purpose of this in vitro study was to evaluate and compare the efficacy of erbium-doped yttrium aluminum garnet (Er:YAG) laser, neodymium-doped yttrium aluminum garnet (Nd:YAG) laser, PrevDent nano-hydroxyapatite toothpaste plus Repairing Serum Kit (PNH), and NUPRO Sensodyne Prophylaxis Paste with NovaMin (NPP) on dentin permeability reduction. Forty dentin discs obtained from bovine incisors were divided into four study groups: Er:YAG laser-treated (2940 nm; 0.2 W, 80 mJ/pulse, 3 Hz); Nd:YAG laser-treated (1064 nm; 1 W, 10 Hz); PNH-treated; and NPP-treated groups. The quantitative changes in permeability of each dentin disc were measured using a computerized fluid filtration method (CFFM) before and after desensitizer treatments. The data were analyzed using the Wilcoxon, paired-samples t, Kruskal-Wallis, and Mann-Whitney U tests. The dentin surfaces and tubules were also morphologically detected by scanning electron microscopy (SEM). In all groups, dentin permeability was significantly reduced after the desensitizer and laser treatments (p < 0.05). Among the groups, we detected a significant difference in only when comparing the Er:YAG laser- and NPP-treated groups (p = 0.034). SEM analysis revealed physical changes in the dentin surface in all groups. This in vitro study shows that all tested desensitizers and laser treatments reduced dentin permeability. Also, surface changes, such as complete or partial occlusion or shrinkage of dentin tubules, were observed in all groups. Although the laser groups performed best, the PNH protocol can be considered as an alternative therapeutic product. In addition, clinical and laboratory studies should be performed for this product, and their efficacy should be assessed by combined therapy with lasers.

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Authors and Affiliations

  1. Department of Periodontology, Faculty of Dentistry, Recep Tayyip Erdogan University, Rize, Turkey

    Sevda Kurt

  2. Department of Periodontology, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey

    Tuğrul Kırtıloğlu

  3. Department of Restorative Dentistry, Faculty of Dentistry, Adnan Menderes University, Aydın, Turkey

    Nasibe Aycan Yılmaz

  4. Department of Restorative Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey

    Ertan Ertaş

  5. Department of Endodontics, Faculty of Dentistry, Abant Izzet Baysal University, Bolu, Turkey

    Hasan Oruçoğlu

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  1. Sevda Kurt
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  2. Tuğrul Kırtıloğlu
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  5. Hasan Oruçoğlu
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Correspondence to Sevda Kurt.

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This article does not contain any studies with human participants or animals. The study is an in vitro study, and the bovine teeth obtained from slaughterhouse materials were used.

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Kurt, S., Kırtıloğlu, T., Yılmaz, N.A. et al. Evaluation of the effects of Er:YAG laser, Nd:YAG laser, and two different desensitizers on dentin permeability: in vitro study. Lasers Med Sci 33, 1883–1890 (2018). https://doi.org/10.1007/s10103-018-2546-1

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  • DOI: https://doi.org/10.1007/s10103-018-2546-1

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