Low reactive-level 830 NM gaalas diode laser therapy (LLLT) successfully accelerates regeneration of peripheral nerves in human

Abstract

Forty patients with short and long-term neusosensory impairment following perioral nerve injuries arc presented in this study. Assessment of their sensory level was undertaken using a variety of nerve tests, one of them was a visual analogue scalc (VAS) for registration of sensitivity level prior to and after 10 treatment sessions and additionally for 21 of the 40 patients after 20 treatment sessions. Low level laser therapy (LLLT) was applied using GaAlAs 830 nm, 70 mW continuous wave. Dose of 6.0 J/cm2 was standardized for all patients. Improvement of the eight patients with clinical symptoms of less than 1 year after 10 treatments, was between 40-90% (average 51.9%) and after 20 treatments between 60-80% (average 66.7%) for the three patients who continued with the treatment. In 32 of the 40 patients with clinical symptoms of more than 1 year duration, their improvement was estimated at between 40 and 80% (average 54.8%). 21 patients completed 20 treatment sessions and the end results were between 60-90% (average 71.1%). This was an uncontrolled clinical study of LLLT on perioral nerve injuries and demonstrated the effectiveness of GaAlAs laser on the nerve involved when applied lo the nerve trunk and terminal endings. Although controlled research into actual mcchanisms and pathways is needed, the preliminary findings arc very promising. © 1993, International Phototherapy Association. All rights reserved.