An in-vitro Study to Evaluate the Fracture Resistance of Endodontically Treated Teeth using Intermediate Endodontically Sealing in Access Cavity with Two Different Etching Techniques

Abstract

Background and Aim: This study aimed to evaluate the effect of on using two different etching techniques of Immediate Endodontic Sealing IEM technique on the fracture resistance of endodontically treated teeth with MOD cavity restored by Flowable Bulk-fill composite as dentin replacement.

Materials and Methods: Thirty extracted first maxillary premolars were collected and distributed randomly into three groups (n=10). Solid teeth (Group 1), and two different IEM techniques were applied, first one with Total Etch bonding system (Group 2) and second one with self-etch bonding system (Group 3). IEM procedures were applied before Root Canal Treatments and MOD coronal preparations were done in two groups (2 and 3). Two groups were restored with tetric n-flow bulk fill and tetric n-ceram. Compression load test was done for all groups, and then data were analyzed with one-way ANOVA tests.

Results:  Results showed that the group 2 had the highest mean of the compression load test when compared with group 3 and lower mean of the compression load test when compared with group 1, with no statistically difference (p > 0.05).

Conclusions: The use of IEM technique with Total etch bonding systems or self-etch ones and restore endodontically treated teeth with flowable bulk-fill composite as dentin replacement and conventional composite have good result and enhance the fracture resistance of treated teeth.

Keywords: Endodontically Treated Teeth, MOD Cavities, Flowable Bulk Fill Composite, Immediate Endodontic Sealing, Total Etch Technique, Self-Etch Technique.