Comparison of Photodynamic Therapy and Laser Therapy in Conjunction with Scaling and Root Planing in Patients with Chronic Periodontitis: A Clinico-microbiological and Biochemical Study

IntroductIonPeriodontitis is a chronic inflammatory disease that affects the tooth's supporting structures.Periodontal disease is caused by periodontopathogens, but the outcome is heavily influenced by the host's immune response. 1Scaling and root planing (SRP) is the gold standard in nonsurgical periodontal disease management.Despite the fact that SRP has resulted in significant improvements in a large number of cases, it has been found to be less than ideal for completely eradicating all subgingival periodontal pathogens due to the anatomical complexity of the tooth roots and the microbes colonizing the tissues.This could cause residual pathogens to recolonize periodontal pockets, which could be a serious problem.As a result, alternative treatment strategies must be considered in order to prevent periodontal pocket recolonization.Since the laser beam can penetrate the deepest crevices and grooves, it has been suggested that lasers can overcome this restriction.The laser's ability to cure inflammatory diseases such as periodontitis has also been linked to its host immunomodulatory properties.One potential new treatment strategy for eliminating harmful bacteria in periodontal and peri-implant disorders is photodynamic therapy. 2 Photodynamic treatment (PDT) was first presented in 1904 as a way to use light to render chemicals, microbes, or cells inactive.