title: Physicochemical Properties and Dentin Bond Strength of a Tricalcium Silicate-Based Retrograde Material.
abstract: The aim of this study was to evaluate the physicochemical properties and the apical dentin bond strength of the tricalcium silicate-based Biodentine in comparison to white MTA and zinc oxide eugenol-based cement (ZOE). Setting time and radiopacity were evaluated according to ISO 6876:2012 specification. Final setting time, compressive strength and pH were also assessed. Material's bond strength to the apical root canal dentin was measured by the push-out assay. Data were analyzed by ANOVA and Tukey-Krammer post-hoc test. Biodentine presented the shortest initial (16.2±1.48 min) and final setting time (35.4±5.55 min). Radiopacity of Biodentine (2.79±0.27 mmAl) does not agree with ISO 6876:2012 specifications. On the other hand, Biodentine showed higher compressive strength after 21 days (37.22±5.27 MPa) and higher dentin bond strength (11.2±2.16 MPa) in comparison to white MTA (27.68±3.56 MPa for compressive strength and 2.98±0.64 MPa for bond strength) (p<0.05). Both MTA and Biodentine produced an alkaline environment (approximately pH 10) (p>0.05) compared to ZOE (pH 7). It may be concluded that Biodentine exhibited faster setting, higher long-term compressive strength and bond strength to the apical dentin than MTA and ZOE.
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Camila de Paula Telles Pires
authors.initials: CP
authors.lastname: Lucas
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Raqueli
authors.initials: R
authors.lastname: Viapiana
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Roberta
authors.initials: R
authors.lastname: Bosso-Martelo
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Juliane Maria
authors.initials: JM
authors.lastname: Guerreiro-Tanomaru
authors.affiliation: Department of Restorative Dentistry, Faculty of Dental Surgery, University of Malta, MaltaBrasil.
authors.forename: Josette
authors.initials: J
authors.lastname: Camilleri
authors.affiliation: Department of Restorative Dentistry, Araraquara Dental School, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil.
authors.forename: Mário
authors.initials: M
authors.lastname: Tanomaru-Filho
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D003804:Dentin / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D012387:Root Canal Filling Materials; D017640:Silicates / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D012387:Root Canal Filling Materials; D017640:Silicates; C506393:tricalcium silicate