Falakaloğlu, SedaYeniçeri Özata, MervePlotino, Gianluca2023-04-032023-04-032023Falakaloğlu, S., Yeniçeri Özata, M., & Plotino, G. (2023). Micro-shear bond strength of different calcium silicate materials to bulk-fill composite. PeerJ, 11, pp. 1-14. https://doi.org/10.7717/peerj.151832167-8359https://doi.org/10.7717/peerj.15183https://hdl.handle.net/20.500.13055/436Introduction: This study aimed to compare the micro-shear bond strength (µSBS) performances of two resin-based calcium silicate-based cement (CSC) (TheraCal PT and TheraCal LC), Biodentine, and two modified-MTA CSC materials (NeoMTA 2 and BioMTA+) to bulk-fill restorative material. Materials and Methods: Fifty 3D printed cylindrical resin blocks with a central hole were used (2 mm in depth and 4 mm in diameter). CSCs were placed in the holes (per each group n = 10) and incubated for 24 h. Cylindrical polyethylene molds (2 mm in height and diameter) were used to place the bulk-fill restorative materials on the CSCs and polymerize for 20 s. Then, all specimens were incubated for 24 h at 37 C at a humidity of 100%. Specimen’s µSBSs were determined with a universal testing machine. Data were analyzed with one-way ANOVA (Welch) and Tamhane test. Results: Statistically higher µSBS was found for TheraCal PT (29.91 ± 6.13 MPa) (p < 0.05) respect to all the other materials tested. TheraCal LC (20.23 ± 6.32 MPa) (p > 0.05) reported higher µSBS than NeoMTA 2 (11.49 ± 5.78 MPa) and BioMTA+ (6.45 ± 1.89 MPa) (p < 0.05). There was no statistical difference among TheraCal LC, NeoMTA 2 and Biodentine (15.23 ± 7.37 MPa) and between NeoMTA 2 and BioMTA+ (p > 0.05). Conclusion: Choosing TheraCal PT as the pulp capping material may increase the adhesion and µSBS to the bulk-fill composite superstructure and sealing ability.eninfo:eu-repo/semantics/openAccessBiodentineBio MTA+Bulk-Fill CompositeTheraCal PTTheraCal LCArticle10.7717/peerj.1518311114Q2WOS:0010660897000032-s2.0-85152787259PMID: 37013141Q1