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Comparative histological analysis of bone healing of standardized bone defects performed with the Er:YAG laser and steel burs

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Abstract

This study compares the bone repair process after ostectomies performed either with the erbium:yttrium-aluminum-garnet (Er:YAG) laser or with the low-speed bur drilling. Eighteen rats were used for this study. In the control group, the ostectomy was performed with a low-speed bur drilling. In the experimental group, the ostectomy was made with an Er:YAG laser (500 mJ, 10 Hz). At 7 and 14 days after surgery, the experimental group presented earlier bone repair in comparison to the control group. The experimental group presented an altered layer of approximately 24-μm thickness, whereas the control group did not present any altered layer in the margins of the ostectomies. At 21 days, the histological features of the two groups were very similar, although the altered layer could still be seen. The Er:YAG laser successfully promoted the ablation of the bone tissue, but caused some thermal damage at the margins of the ostectomies.

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Acknowledgments

The authors acknowledge PUCRS, CAPES, CNPq, UNIVAP, and FAPESP (grant number 2001/12754-2) for supports and assistances. The valuable technical assistance of the Engineer Leandro Procópio Alves was very much appreciated. The authors give also special thanks to Dr Edward Ellis III, Program Director of Division of Oral and Maxillofacial Surgery at The University of Texas—Southwestern Medical Center, for his critical analysis of this manuscript.

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Authors and Affiliations

  1. Faculdade de Odontologia, Programa de Pós-Graduação em CTBMF, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil

    Elaine Duarte Artuso de Mello

  2. Faculdade de Odontologia, Programa de Pós-Graduação em CTBMF, Pontifícia Universidade Católica do Rio Grande do Sul, Avenida Ipiranga 6681, Prédio 06, Sala 209, 90619-000, Porto Alegre, RS, Brazil

    Rogério Miranda Pagnoncelli, Manoel Sant’Ana Filho & Marília Gerhardt de Oliveira

  3. Instituto de Pesquisa e Desenvolvimento, Universidade do Vale do Paraíba, Av. Shishima Hifumi 2911, 12244-000, São José dos Campos, SP, Brazil

    Egberto Munin

  4. Private Practice:, Rua Santa Clara 848, 12243-630, São José dos Campos, SP, Brazil

    Elaine Duarte Artuso de Mello & Guilherme Paulo Scarpel de Mello

  5. Universidade do Vale do Paraíba, Av. Shishima Hifumi 2911, 2244-000, São José dos Campos, SP, Brazil

    Emília Angela Loschiavo Arisawa

Authors
  1. Elaine Duarte Artuso de Mello
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  2. Rogério Miranda Pagnoncelli
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  3. Egberto Munin
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  4. Manoel Sant’Ana Filho
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  5. Guilherme Paulo Scarpel de Mello
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  6. Emília Angela Loschiavo Arisawa
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  7. Marília Gerhardt de Oliveira
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Correspondence to Elaine Duarte Artuso de Mello.

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de Mello, E.D.A., Pagnoncelli, R.M., Munin, E. et al. Comparative histological analysis of bone healing of standardized bone defects performed with the Er:YAG laser and steel burs. Lasers Med Sci 23, 253–260 (2008). https://doi.org/10.1007/s10103-007-0475-5

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  • DOI: https://doi.org/10.1007/s10103-007-0475-5

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