Nonthicha BanphakarnKallaya YanpisetDanuchit BanomyongMahidol University2020-01-272020-01-272019-11-01Journal of investigative and clinical dentistry. Vol.10, No.4 (2019), e12444204116262-s2.0-85075813972https://repository.li.mahidol.ac.th/handle/123456789/50701© 2019 John Wiley & Sons Australia, Ltd. AIM: To compare the shear bond strengths of a calcium silicate-based root canal sealer (CSS), to dentin or calcium silicate-impregnated gutta-percha (CSGP), with the shear bond strengths of an epoxy resin-based sealer. METHODS: For sealer/dentin testing, 40 hemisectioned roots were divided into 2 groups. Coronal root dentin discs were bonded with CSS or epoxy resin-based sealer. For sealer/core material testing, CSGP and conventional gutta-percha discs were bonded with a matching sealer (N = 20 per group). The shear bond strengths were tested using a universal testing machine. The failed modes were analyzed using stereomicroscopy and scanning electron microscopy. RESULTS: The CSS sealer had significantly higher shear bond strength to dentin than did epoxy resin-based sealer (P < .01). However, shear bond strengths of the 2 sealers to core materials did not significantly differ (P = .74). The remnants of the CSS sealer adhering to dentin or calcium silicate gutta-percha disc were observed. CONCLUSIONS: The CSS sealer had better adhesion to dentin than did epoxy resin-based sealer. However, the bond of the CSS sealer to impregnated gutta-percha was not superior to the epoxy resin-based sealer bonded to conventional gutta-percha.Mahidol UniversityDentistryArticleSCOPUS10.1111/jicd.12444