Evaluation of Halitosis After Treatment With Photodynamic Therapy Associated With Periodontal Treatment

device irradiation with low intensity laser (wave length = 660 nm) 9 J (Joules) per point(6 points) and radiant 90 seconds PS will be applied in sufficient quantity to cover the middle third and back of the tongue and wait for 5 minutes.six points with the distances of 1 cm between them will be irradiated.

Tongue scrapping will be performed by the same operator in all patients. Posterior -anterior movements will be performed with the scrapper over the lingual dorsum. in order to promote the mechanical removal of tongue coating