Aim: To investigate the bactericidal effect of gallium aluminium arsenide (GaAlAs) laser on photosensitized predominant periodontopathogenic anaerobic organisms.
Materials And Methods: The present prospective study was carried out among 50 patients of chronic periodontitis with pockets ≥ 5 mm depth. For sample analysis of and , a subgingival plaque was collected from periodontal pockets using sterile curettes under aseptic conditions.