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Removal of organic debris with Er:YAG laser irradiation and microleakage of fissures sealants in vitro

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Abstract

The current study was conducted to improve fissure sealing by pre-treatment with Er:YAG laser irradiation in order to remove organic debris. The surface morphology, surface roughness of fissure cavities, and the degree of microleakage after laser treatment were compared with those after bristle brush treatment in vitro. Sixty extracted human teeth were used in this study. The teeth were randomly divided into two groups of 30 each. Artificial fissures were prepared in all teeth into which artificial organic debris was placed. The debris in 30 teeth of one group was removed by means of Er:YAG laser system and the remaining 30 teeth were cleaned using a bristle brush with prophylaxis paste. Surface morphology and surface roughness of were analyzed in ten samples from each group by color laser three-dimensional (3D) microscopy and by scanning electron microscopic examination. The remaining samples were then filled with sealant and subjected to a microleakage test under thermocycling. Statistical analysis was performed using the Mann–Whitney U test; a value of p < 0.05 was considered significant. Morphologically, most of the debris was removed by Er:YAG laser treatment, whereas some fissures were not cleaned by bristle brush. However, microleakage test of both laser and etched brush methods showed similar results. Laser technique might facilitate good adaptation of resin sealant to enamel, because of an increase in surface roughness and favorable surface characteristics.

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Authors and Affiliations

  1. Department of Conservative Dentistry & Endodontics Faculty of Dentistry, Bangabandhu Sheikh Mujib Medical University (BSMMU), 3rd Floor, Block-A, Shahbag, Dhaka-1000, Bangladesh

    Mozammal Hossain

  2. Department of Cariology and Endodontology, School of Dentistry, Showa University, 2-1-1, Kitasenzoku, Ohta-Ku, Tokyo, 145-8515, Japan

    Yoshishige Yamada & Yoshiko Masuda-Murakami

  3. Division of Research and Development, Institution for Advanced Dental Sciences, Tokushinkai Group, 1-6-17 Meguro, Meguro-Ku, Tokyo, 153-0063, Japan

    Yukio Nakamura

Authors
  1. Mozammal Hossain
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  2. Yoshishige Yamada
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  3. Yoshiko Masuda-Murakami
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  4. Yukio Nakamura
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Correspondence to Mozammal Hossain.

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Hossain, M., Yamada, Y., Masuda-Murakami, Y. et al. Removal of organic debris with Er:YAG laser irradiation and microleakage of fissures sealants in vitro. Lasers Med Sci 27, 895–902 (2012). https://doi.org/10.1007/s10103-011-0994-y

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  • DOI: https://doi.org/10.1007/s10103-011-0994-y

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