Abstract
A good root filling quality is essential to prevent the flow of bacteria and their toxins to the periapical tissue and to impede reinfection. Over the past years several methods of instrumentation and associated obturation systems have been introduced in order to improve the root filling quality. The purpose of our investigation was to study and compare the differences in the quality of root filling when using traditional manual instrumentation and obturation technique versus rotary instrumentation with Reciproc, followed by filling with its matching single cones.