Endodontology (Jan 2018)
Evaluation of efficacy of Nd:YAG laser, ozonated water, and ultrasonic irrigation with 3% sodium hypochlorite for disinfection of root canal: An in vivo study
Abstract
Background: Root canal infection has multibacterial etiology. The success of the endodontic treatment is directly influenced by the elimination of microorganisms from infected root canals. Many authors have suggested that to eliminate bacteria from the root canals predictably, the adjuvant method or agent is recommended. Aims: The present study was conducted to evaluate and compare the efficacy of Nd:YAG laser, ozonated water, and ultrasonic irrigation using 3% sodium hypochlorite for disinfection of root canal. Methodology: In thirty single-rooted teeth, access opening and instrumentation till #25 file was done under rubber dam. The first sample was collected by introducing a sterile paper point for preoperative microbial sampling. Ten teeth in each group were treated with Nd:YAG laser, ozonated water, and ultrasonic irrigation using 3% sodium hypochlorite for disinfection of root canal. The second sterile paper point was placed to collect the postoperative sample. Paper points were put in a test tube containing transport medium and sent for microbiology laboratory. Results: According to the results of the present study, there was highly significant difference (P < 0.0001) in percentage reduction in all the three study groups. There was a statistically highly significant difference (P < 0.0001) in pre- and post-operative colony-forming units in samples treated with ultrasonic irrigation with 3% sodium hypochlorite (Group III). Conclusions: In the current study, ultrasonic irrigation with 3% sodium hypochlorite was the most effective treatment modality as compared to Nd:YAG laser and ozonated water for disinfection of root canal.
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