Mechanical and antimicrobial property of different surface treated glass ionomer cements under desiccated condition

Background: The purpose of this in vitro study was to evaluate the effect five different surface treatments on mechanical property and antimicrobial three desiccated glass ionomer cements. Materials Methods: In experimental study, 300 rectangular blocks restorative materials were fabricated using an aluminum mold, Group I (n = 100) Micron bioactive, II GC Fuji IX GP Extra, III bioglass R. These stored 100% humidity for 24 h then placed air desiccate another h. groups further divided into two major 50) both (Flexural) testing. subgroups 10) based medias used treatment (senquelNaF, MI varnish, chlorhex plus, kedodent mouthwash, [control]). Flexural strength (FS) measured universal testing machine. Fracture compared one‑way analysis variance Tukey’s post hoc test with P ≤ 0.05 considered statistically significant. Antimicrobial carried out by covering specimens a suspension Streptococcus mutans followed incubation later washed, vortex mixed, serially diluted, plated. Ccolony‑forming unit/ml calculated after 3 days incubation. Data analyzed Kruskal–Wallis Mann–Whitney U nonparametric test, Results: bioactive varnish significantly exhibited highest FS. Surface plus no growth S. mutans. Extra reduction other group. Conclusion: material improved their while among showed better property, whereas property. Key Words: Desiccation, flexural strength, glass‑ionomer cements