The Efficacy of Laser in Root Canal Disinfection

The aim of this study is to assess in vivo the efficacy of Er,Cr:YSGG/diode laser and Diode/EDTA on bacterial count in root canal treatment in an evidence-based clinical trial. The null hypothesis being tested is that there is no difference in total bacterial count reduction between conventional irrigation and the two types of lasers used. Thirty patients are equally divided into 3 separate groups : * Group A (Conventional): 2.5% NaOCL and 17% EDTA. * Group B(Dual): saline along with Er,Cr:YSGG laser and diode laser combination * Group C(Combined): saline along with 17% EDTA and diode laser combination Microbiological analysis will be done for both aerobic and anaerobic bacteria using Colony forming units. All data will be collected, tabulated, summarized, and statistically analyzed.