An important task for the dentist of the surgeon is the prevention of purulent complications in the postoperative period. This study demonstrates the dynamics of the clinical picture and laboratory data in the application of laser radiation violet wavelength range after surgery in the oral cavity. Patients with detected microorganisms before treatment, after conducting a five-day course of treatment by the device Lazurit with the wavelength of 405 nm, 86,7% of the microflora was not determined.