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Influence of biosafety materials of the laser output power

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Abstract

Biosafety materials used in the correct handling of low power laser equipment may interfere on the power delivered at the target tissue and, possibly, on the effects on biological tissues. The aim of this study was to evaluate the interference of the use of polyvinyl chloride (PVC) and polyethylene (PEAD) protection materials on the output power of low power lasers. Two low power diode laser devices with different wavelengths (red and infrared) were used. For each wavelength, two protection materials and two evaluation times (before and after protection) were considered. The output power (mW) was measured with the tip positioned in close contact with the power meter receiver. Parametric statistical test, two-way ANOVA for repeated measures (protection material and time), was performed considering the level of significance of 5%. In respect to “time”, all groups had the output power reduced after placing the protective material (p < 0.05). Comparing the protection materials, the PEAD showed a greater reduction in output power than the PVC for both red and infrared wavelengths. It was concluded that, among the biosafety materials tested, PVC is the most suitable for the protection of the tip of the low power lasers.

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Authors and Affiliations

  1. Department of Operative Dentistry, School of Dentistry, University of São Paulo, 2227 Professor Lineu Prestes, São Paulo, SP, 05508-000, Brazil

    Fernanda Cristina Nogueira Rodrigues, Erika Michele dos Santos Araújo, Taís Fonseca Mantilla & Patrícia Moreira de Freitas

  2. Department of Maxillofacial Surgery, Prosthesis and Traumatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil

    Júlia Gomes Lúcio de Araújo

  3. Department of Dentistry I, Federal University of Maranhão, São Luís, MA, Brazil

    Andréa Dias Neves Lago

Authors
  1. Fernanda Cristina Nogueira Rodrigues
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  2. Júlia Gomes Lúcio de Araújo
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  3. Erika Michele dos Santos Araújo
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  4. Andréa Dias Neves Lago
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  5. Taís Fonseca Mantilla
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  6. Patrícia Moreira de Freitas
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Correspondence to Fernanda Cristina Nogueira Rodrigues.

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Rodrigues, F.C.N., de Araújo, J.G.L., dos Santos Araújo, E.M. et al. Influence of biosafety materials of the laser output power. Lasers Med Sci 36, 311–315 (2021). https://doi.org/10.1007/s10103-020-03030-1

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  • DOI: https://doi.org/10.1007/s10103-020-03030-1

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