Ефикасноста на три ендодонтски системи при конвенционален ендодонтски ретретман

Abstract

Technological advances in dentistry provide a high percentage of successful endodontic treatments. But despite the possibilities, in many cases the outcome of endodontic therapy is unsuccessful, and there is a need for additional endodontic retreatment. A large number of factors compromise primary endodontic treatment: reinfection, additional contamination of the root canal system, incomplete processing or obturation.The conventional or conservative endodontic retreatment is a method of first choice for therapy in such cases, prior to surgical endodontics or tooth extraction. The conventional endodontic retreatment involves repeated instumentation of the root canal system of the tooth in purpose to complete removal of the obturation, and consequently additional mechanical and chemical treatment of the tooth. Different systems and techniques are used for the realization of this task, which includes manual and machine instruments alone or in combination with the application of solvents, heat softening of guttapercha, chemical agents, ultrasonic instrumentation and lasers. Manufacturers of endodontic instruments, thanks to technological development, create new endodontic retreatment systems, which are recommended to be more effective in root instrumentation than existing ones. Successful instrumentation is a main reqest for the positive outcome of endodontic retreatment. It is therefore necessary to investigate the efficiency of these new endodontic systems, which bring us to the aim of our research.