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® © 2025 Journal of Conservative Dentistry and Endodontics.