Photodynamic Therapy And Clinical Research Diode Laser Root Canal Disinfection Effect

Purpose:To study the role of root canal disinfection photodynamic therapy and wavelength of 980 nm wavelength of 660 nm diode laser in root canal treatment process, the evaluation of these two wavelengths of laser sterilization effect on infected root canal, for both laser provide some experimental evidence in the clinical application of root canal therapy.Methods:The number of 20 patients with the chronic pulpitis, a total of 20 teeth as research subjects. In the teeth after topical anesthesia, open canal, and then depending on continued use pulpectomy needle, root canal file, G.Gdrill, root canal using washed sodium hypochlorite, hydrogen peroxide and other solution coupled ultrasonic root canal treatment and to make it After drying, the use of photodynamic therapy and diode laser wavelength of 660 nm wavelength 980 nm irradiation of root canal disinfection all 10, were acting on the teeth. Before and after laser irradiation sterilization, respectively sterilized endodontic file, sampling at the root of the number of scraping the wall fell, put drops of sterile saline on a glass slide and covered with a cover slip, fold in 3600 under the number of bacteria were observedbefore and after laser irradiation, using spss13.0 for statistical analysis.Results: 3600 times was observed under phase contrast microscope, the number of bacteria in the root canal after the laser irradiation is significantl y less than the number of bacteria before the treatment, having statistically significant result; comparison is made between phot odynamic therapy and wavelength of 980 nm of wavelength 660 nm diode laser sterilization effect was not statistically different.Conclusion: The use of laser root canal disinfection can reduce the number of bacteria in the root canal, root canal therapy to improve the success rate.