Saltareli, Fernanda MaraRaucci, Larissa Moreira Spinola de CastroMiranda, Carlos Eduardo SaraivaSilva, Nathalia Cristina TavellaOliveira, Ivone Regina deRaucci Neto, Walter2026-01-142026-01-14https://repositorio.univap.br/handle/123456789/1087To assess the effect of cleaning protocols on dentin contaminated with blood in reparative endodontic materials, bovine root samples were divided: no contamination (N); contamination (P); contamination and cleaning with saline (S), 2.5% NaOCl+saline (Na) or 2.5% NaOCl+17% EDTA+saline (NaE) and filled with: mineral trioxide aggregate (MTA), calcium-aluminate-cement (C), or C+collagen (Ccol) (n=13). The samples were evaluated for porosity, chemical composition, and bond strength. MTA porosity was lower than C (p=0.02) and higher than Ccol (p<0.001). P and NaE were similar (p=1.00), but higher than the other groups (p<0.001). MTA bond strength was similar to Ccol (p=0.777) and lower than C (p=0.028). P presented lower bond strength than the N (p<0.001); S and Na were similar to each other (p=0.969), but higher than P and lower than N (p<0.001). It was observed a predominance of mixed and cohesive failures. None of the samples showed Ca/P ratio values similar to human hydroxyapatite. This study showed that contamination with blood increased the materials porosity, but dentin cleaning with 2.5% NaOCl reduced this effect, and the collagen additive reduced the material porosity. Furthermore, blood contamination reduced the materials bond strength, and cleaning with saline or 2.5% NaOCl diminished this effect.PDFen-USArtigos de PeriódicosBrazilian Dental Journal10.1590/0103-6440202405907DentinBloodCalcium silicateDental bondingSALTARELI, F. M. et al. Effects of blood and root-dentin cleaning on the porosity and bond strength of a collagen bioceramic material. Brazilian Dental Journal, v. 35, p. 1-12, 2024. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402024000100235&tlng=en.Universidade do Vale do ParaíbaUniversidade de Ribeirão Preto