Tavella-Silva, Nathalia CristinaRaucci, Larissa Moreira Spinola CastroPolizeli, Victor MiguelMiranda, Carlos Eduardo SaraivaOliveira, Ivone Regina deRaucci Neto, Walter2025-07-082025-07-08https://repositorio.univap.br/handle/123456789/1013The aim of this study was to evaluate the effect of strontium (Sr2+) and varying concentrations of bioactive glass (BG) on the physicochemical and mechanical properties of calcium aluminate cement (CAC). The experimental groups included: control (CAC); CAC with 5 wt% BG (CAC5); CAC with 10 wt% BG (CAC10); CAC with 1 wt% Sr2+ (CAC-Sr); CAC5 with 1 wt% Sr2+ (CAC5-Sr); and CAC10 with 1 wt% Sr2+ (CAC10-Sr). Setting time (ST), solubility (SL), pH, electrical conductivity (CON), total dissolved solids (TDS), calcium ion release (Ca2+), radiopacity (RAD), surface roughness (SR), and bond strength (BS) were evaluated using cement discs. ST and RAD were assessed in freshly prepared samples. SL was determined by measuring the weight change of the specimens after seven days of water immersion. pH, CON, TDS, and Ca2+ were quantified in the immersion solutions. SR was measured after 7 and 28 days in water and phosphate-buffered saline (PBS), and BS was evaluated using the push-out test. Data were analyzed using one-way ANOVA and Tukey’s post hoc test (α = 0.05). BG incorporation significantly reduced ST, whereas Sr2+ had no effect. All groups showed mass gain. No significant differences in pH were observed among groups. CAC and CAC5 exhibited higher Ca2+ release than CAC-Sr and CAC5-Sr (p < 0.05). No differences in RAD were found. BS increased with the addition of BG and Sr2+, except in the CAC10-Sr group. Sr2+ enhanced BS in CAC (p < 0.001), but not in CAC5. Failure modes were predominantly mixed and cohesive. In conclusion, BG improved bond strength and reduced setting time, while Sr2+ had no significant effect on the physicochemical properties of the cement.PDFen-USArtigos de PeriódicosElsevier10.1016/j.ceramint.2025.05.316Calcium aluminate cementBioactive glassStrontiumPhysicochemical propertiesMechanical performanceTAVELLA-SILVA, N. C. et al. Strontium- and bioactive glass-enriched dentin repair cement: Mechanical performance and physicochemical characteristics. Ceramics International,Universidade de Ribeirão PretoUniversidade de São PauloUniversidade do Vale do Paraíba