Clinical Outcomes and Bacterial Reduction of Single- Versus Two-Visit Endodontic Treatment Using Single File and Multiple Files Instrumentation Techniques

Abstract

The purpose of this study is to evaluate single- visit versus multiple visit root canal treatment of non-vital teeth in terms of clinical, micro-biological and radiographic outcomes, incidence of postoperative pain, using single- file and multiple files instrumentation techniques. Forty patients were selected in this study, all of them had asymptomatic apical peridontitis associated with a necrotic lower molar. A cone beam computed tomography was taken for each patient before initiating treatment. They were then randomly and equally divided into two groups. The first group received single visit root canal treatment while the second group was treated during multiple visits. In both groups chemo- mechanical root canal preparation and obturation were performed by the same operator. Mechanical preparation was either done using ProTaper Universal system or WaveOne