Clinical Approaches to the Three-Dimensional Endodontic Obturation Protocol for Teeth with Periapical Bone Lesions

Abstract

Knowledge of dental anatomy and the three-dimensional principles of debridement, sterilization and obturation is necessary for effective root canal treatment. The chemo–mechanical preparation of the root canal biomechanically significantly reduces the number of microorganisms present. However, research has demonstrated that microorganisms frequently persist. The antimicrobial effect of the irrigants is essential to their biological function. Several obturation techniques are currently available, the selection of which depends on the canal’s morphology and the individual therapeutic goals of each instance. New sealing materials and methods for regenerative root canal obturation are enhancing and improving the predictability of three-dimensional (3D) sealing procedures. Epoxy sealers and gutta-percha are currently employed by clinicians as the gold standard in obturation procedures. The most recent developments in endodontic sealing materials are related to bioceramic sealers. Reports indicate that bioceramic sealers are biocompatible, harmless, hydrophilic, expandable and antibacterial. In the therapy of teeth with periapical lesions, not only the effective treatment of the root canal system but also the quality of the used sealer are of particular importance. Regenerative processes in the bone lesion are potentiated by the action of the sealer due to its highly biocompatible, non-toxic, aluminum-free and antibacterial capabilities. This paper discusses sophisticated root canal sealing materials and contemporary filling techniques in the regenerative therapy protocol for teeth with periapical bone lesions.