Endodontics, the branch of dentistry that deals with the treatment of the dental pulp and periapical tissue, is constantly evolving to provide effective methods to address the challenges associated with endodontic pathology. As part of endodontic treatment, one of the key aspects is the adequate filling of the root canals, which achieves hermetic closure of the endodontic system, prevents re-infection, and ensures the preservation of teeth in the oral environment. The purpose of this paper is to describe thermoplastic techniques for filling root canals, as well as the materials and methods used. Soft fillers that harden in the root canal, semi-hard fillers and thermoplastic techniques such as warm lateral condensation, ultrasonic condensation of gutta-percha, hot vertical condensation, injection techniques of heated gutta-percha, thermo-mechanical compaction of gutta-percha, continuous wave, GuttaFlow and Core carrier techniques were analyzed - thermafil technique. The work deepens the topic of understanding the indications and contraindications for the application of thermoplastic techniques and their contribution to achieving optimal results in endodontic treatment.