Laser in endodontics ( Part I )

The complexity of the root-canal system is well known. Numerous lateral canals, of various dimensions and with multiple morphologies, branch off from the principal canals. A recent study found complex anatomical structures in 75% of the teeth analysed. The study also found residual infected pulp after the completion of chemo-mechanical preparation, both in the lateral canals and in the apical structures of vital and necrotic teeth associated with peri-radicular inflammation.1