Influence of bioceramic intracanal medication on the bond strength of bioceramic root canal sealer

• Published in: Brazilian oral research 2023-01, Vol.37, p.e056-e056
• Main Authors: Escobar, Patrícia Maria, Silva-Sousa, Alice Corrêa, Camargo, Rafael Verardino de, Simões-Carvalho, Marco, Silva-Sousa, Yara Teresinha, Mazzi-Chaves, Jardel Francisco, DE-Deus, Gustavo, Sousa-Neto, Manoel Damião
• Format: Article
• Language: English
• Subjects: Adhesives; Calcium Hydroxide; Dental Bonding - methods; Dental Pulp Cavity; Dentin; DENTISTRY, ORAL SURGERY & MEDICINE; Epoxy Resins - chemistry; Materials Testing; Root Canal Filling Materials - chemistry; Root Canal Obturation
• ISSN: 1806-8324; 1807-3107; 1807-3107
• DOI: 10.1590/1807-3107bor-2023.vol37.0056

To investigate the influence of the remaining volume of a new intracanal medication based on bioceramic compounds on the bond strength (BS) and formation of an adhesive interface between calcium silicate-based and epoxy resin-based root canal sealers. For this purpose, the specimens were distributed according to the intracanal medication (n = 26): Bio-C Temp (BCT) and Ultracal XS (UXS). The roots were scanned in microCT, and after 7 days, the medication was removed. Then a new scan was performed to evaluate the volume of medication remaining. Subsequently, 40 specimens were redistributed into 2 subgroups (n = 10) and filled according to the sealer used: AH Plus (AHP) and Bio-C Sealer (BCS), to assess the bond strength by using the push-out test, and the adhesive interface by confocal laser fluorescence microscopy (CLSM) and scanning electron microscopy (SEM). The t test showed a smaller remainder of BCT (1.77 ± 0.86) compared with UXS (10.47 ± 5.78), irrespective of the root third evaluated. The BS showed that teeth with BCT + BCS had higher bond strength values (3.70 ± 1.22) when compared to the other groups: BCT + AHP (2.15 ± 1.07), UXS + BCS (3.18 ± 1.09) and UXS + AHP (2.11 ± 1.02) (p