Abstract
It is generally agreed that successful endodontic treatments rely to a great extent on three dimensionally hermetic obturation of the root canal system. About three decades ago, the thermoplastic root canal fi lling (TP-RCF) technique was introduced to fi ll a roof canal effectively. In my clinic, TP-RCF has been performed for many years. In this study, the ability of TP-RCF to fi ll simulated roof canal models and extracted human teeth was compared with that of lateral condensation root canal fi lling (LC-RCF). Furthermore, long-term prognosis of the infected root canals with apical lesions was evaluated for both fi lling techniques radiological. As a result, the apical lesions when TP RCF was used tended to disappear more surely.
