Introduction: Since 1960, low level laser therapy (LLLT) has been used to stimulate a series of biologic tissues. Some authors have showed, trough experimental and clinics studies, the biostimulatory effects of LLLT on bone both in vivo and in vitro.

Conclusion: Results obtained showed that LLLT can stimulate osteoblastic proliferation and can accelerate the consolidation of bone fracture. Further studies are necessary to investigate the effects of LLLT on bone tissue and to determine the best parameters to use.