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Comparative evaluation of various low-level laser therapies on bone healing following tooth extraction: An experimental animal study

J Craniomaxillofac Surg. 2018 Jul;46(7):1147-1152. doi: 10.1016/j.jcms.2018.05.012. Epub 2018 May 10.

Abstract

Purpose: The aim of this study was to evaluate the effects of helium-neon and gallium-aluminum-arsenide lasers with various doses on bone healing following tooth extraction.

Materials and methods: Maxillary right incisor teeth of 30 female albino Wistar rats were extracted. Five groups were established: four groups treated with helium-neon or gallium-aluminum-arsenide lasers and a control group. Both laser groups' rats received energy doses of 6 J/cm2 and 10 J/cm2 for 7 days. At the end of 30 days, all subjects were sacrificed for histological and morphological evaluations.

Results: Laser groups showed faster bone healing and gallium-aluminum-arsenide lasers increased vascular immunoreactivity. The most widespread organized bone formation in the extraction socket was observed in the gallium-aluminum-arsenide laser group with the energy dose of 10 J/cm2 (p < 0.05).

Conclusion: This study demonstrated that low-level laser therapies were effective on alveolar bone healing and that an energy dose of 10 J/cm2 did not have an inhibition effect on bone regeneration.

Keywords: Bone healing; GaAlAs laser; HeNe laser; Low level laser therapy; Tooth extraction; Various doses.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Alveolar Process / pathology
  • Alveolar Process / physiology
  • Alveolar Process / radiation effects*
  • Animals
  • Female
  • Lasers, Gas / therapeutic use*
  • Lasers, Semiconductor / therapeutic use*
  • Low-Level Light Therapy*
  • Osteogenesis / radiation effects
  • Radiotherapy Dosage
  • Rats, Wistar
  • Tooth Extraction*
  • Wound Healing / physiology
  • Wound Healing / radiation effects*