In the marginal progressive profound periodontitis, we associated low level laser therapy (LLLT) to the classical surgical treatment with implant of biovitroceramics. From a total of 50 patients, 37 where irradiated with the laser. We used a diode laser, =830 nm, energy density up to 2 J cm2, in Nogier pulsed mode. The laser treatment is used in a complex of therapeutic procedures: odontal, local anti-inflammatory — as well as in the cabinet and at home –, prosthetic, and for the morphologic and functional rebalancing. The immediate effects where: an evolution without bleeding and without post-surgical complications, as can appear at the patients who didn't benefit of laser irradiation (hematoma, pain, functional alteration in the first post-surgical week). Operated tissue is recovering faster. The percentage of recurrences decreases, and the success depends less on the biological potential and the immunity of each individual.