# Push-out bond strength for bioceramic and epoxy resin-based sealers

## TL;DR

This study compares the bond strength of bioceramic and epoxy resin-based sealers used in dental treatments, finding that epoxy resin-based sealers perform better.

## Contribution

The study provides empirical evidence on the superior bond strength and failure modes of epoxy resin-based sealers compared to bioceramic sealers.

## Key findings

- Epoxy resin-based sealers achieved a higher bond strength (6.4 MPa) than bioceramic sealers (5.2 MPa).
- Bioceramic sealers showed adhesive failure, while epoxy resin-based sealers showed cohesive and mixed failure patterns.
- Epoxy resin-based sealers outperformed bioceramic sealers in adhesion and mechanical interlocking.

## Abstract

The push-out bond strength between bioceramic and epoxy resin-based cement materials that treat endodontically treated teeth is of
interest to dentist. The push-out bond strength tests were applied to forty premolars after instrumenting and obturating them with either
bioceramic or epoxy resin-based sealer materials. The bond strength measurements during the push-out test indicated epoxy resin-based
sealer achieved 6.4 ± 0.6 MPa while the bioceramic sealer produced 5.2 ± 0.8 MPa with p < 0.05 indicating substantial
statistical difference. The main failure mode in samples with bioceramic sealer involved adhesive breakdown whereas epoxy resin-based
sealers demonstrated both cohesive and mixed failure patterns. The bond strength results indicate epoxy resin-based products outperform
other products in both adhesion and mechanical interlocking properties which merits deeper examination about their extended clinical
utilization.