Efectos de diferentes restauraciones en la resistencia a la fractura de premolares endodonciados.

Abstract

Introduction: When performing a root canal treatment, tooth structure is lost making the tooth susceptible to dental fracture. After conducting the root canal, the tooth should be sealed with a restorative material that should prevent leaks, leaks and give good mechanical strength. Purpose: To determine the effects of different restorations on the fracture resistance of endodontic premolars. Materials and methods: Sixty-five maxillary premolars were selected, endodontic treatment was performed and the samples were assigned to 5 groups for each restorative material. Control Group: healthy teeth; Conv Group: restorations with conventional resin (3M ™ Filtek ™ Z350 XT); Bulk Group: restorations with bulk fill fluid resin (3M ™ FiltekTM Bulk Fill Flowable); Colt Group: restorations with glass ionomer (GC Fuji LINING LC) except a 1.5 mm layer of the occlusal surface that was restored with zinc oxide / calcium sulfate (Coltosol® F); IRM Group: restorations with zinc oxide / eugenol (IRM, Dentsply Sirona). The groups were classified into 3 subgroups showing 3 types of cavities: occlusal, mesio - occlusal and mesio - occlusion - distal. The samples were subjected to a compression force until fracture. Results: Statistically significant differences were found in the Colt MO, Colt MOD and IRM MOD groups compared to the control group. Fracture resistance of endodontically treated teeth restored with conventional resin and bulk fill resin did not show a significant decrease in fracture resistance compared to the control group. Conclusion: Coltosol is not a viable material to be used in MO and MOD cavities because it does not offer adequate mechanical resistance in endodontic teeth.