A comparative analysis of adhesion abilities between AH Plus Bioceramic, Ceraseal and AH Plus on root canal dentine surfaces.

INTRODUCTION

The adhesion of sealers to dentin is a vital aspect of endodontic success. Epoxy resin-based sealers such as AH Plus are considered the gold standard for their strong mechanical adhesion, but they lack bioactivity. Calcium silicate-based sealers such as AH Plus Bioceramic and Ceraseal offer bioactive potential. This study compares the push-out bond strength and failure modes of three root canal sealers: AH Plus Bioceramic, Ceraseal, and AH Plus.

MATERIALS AND METHODS

Thirty mandibular premolars were prepared and divided into three groups (n = 10): Group I (AH Plus Bioceramic), Group II (Ceraseal), and Group III (AH Plus). Push-out bond strength was measured in MPa at apical and medial root segments using a universal testing machine. Failure modes were evaluated using a digital microscope at ×30 and ×100 magnification.

RESULTS

AH Plus exhibited the highest mean bond strength (14.65 ± 2.42 MPa), followed by Ceraseal. AH Plus Bioceramic showed the lowest bond strength (2.31 ± 0.21 MPa). Failure modes in Group I were predominantly mixed, whereas Groups II and III had balanced cohesive and mixed failures.

CONCLUSIONS

While all sealers adhered well to dentin, AH Plus Bioceramic demonstrated significantly lower bond strength compared to AH Plus and Ceraseal.