Comparación in vitro de la resistencia a la fractura del muñón reconstruido con dos tipos de resina: Bulk vs resina tipo Core con poste en fibra de vidrio en dientes premolares tratados endodonticamente

Abstract

Problem: Endodontically treated teeth that present a large loss of tooth structure are generally rehabilitated with intra-radicular structures such as posts or cores, and traditionally with a full coverage crown-type restoration. However, the physical-mechanical properties of intraradicular retainers increase the risk of vertical and horizontal fractures in the two sites of highest stress concentration: at the level of the cervical and apical third. Objective: To analyze the fracture resistance of the stump prepared for a full crown reconstructed using three different restorative materials: Bulk Resin (Group A), Bulk Resin + Fiberglass Post (Group B), Core Type Cement + Fiberglass Post glass (Group C). Results: The type of restoration that shows greater resistance to compressive forces is group B (post + bulk resin) compared to group A (bulk) and group C (Core + post). Regarding the resistance of the number of roots, according to the results: single-rooted teeth have better resistance and possibility of recovery compared to two-rooted teeth. Conclusions: There are no significant differences between the three materials used in the study, that is, the results regarding compressive resistance were similar and it is up to the clinician to make decisions about what type of treatment it entails depending on the case.