Resistencia a la fractura en premolares con apertura ultraconservadora y tradicional.

Abstract

Within the framework of the postgraduate course in endodontics at the Santiago de Guayaquil Catholic University, research was carried out to determine the resistance to fracture in endodontically treated premolars with ultraconservative opening and traditional opening, and how this affects the types of fractures, the study was performed on premolars selected from a universe of 100 dental pieces, from which a population of forty-five pieces was taken, healthy, without fissures, without caries, extracted for orthodontic purposes, which were preserved and which underwent endodontic treatment with traditional opening. to a group of 20 pieces and with ultraconservative opening to another group of 20 pieces and a control group of 5 pieces without treatment, the two groups with treatment were exposed to force until they fractured, in order to observe where they produced the fracture, from which it turned out that 70% of the endodontic pieces with ultraconservative opening suffered ron partial coronary fracture, there was no significant difference between the groups with different openings and types of fractures. No correlations were found between the variables force, time, opening and type of fracture, it was shown that the force-time correlation is positive. The only relatively considerable difference was the mean force with which the untreated and treated teeth fractured, which varied by 25% more in the untreated teeth. The force is relative and the dispersion in the entire studied population is high, without a doubt there are other factors besides those studied that determine the type of fracture in the premolars.