Materials and methods
SD, Dionysopoulos
The current study is a cross-sectional in vitro study, which was conducted in the Pediatric Dentistry and the Oral Biology Departments, Faculty of Dentistry, Pharos University in Alexandria, Alexandria, Egypt. Ethical approval was obtained from the Research Ethics Committee—Pharos University in Alexandria in adherence to the tenets of the Declaration of Helsinki 1964 and its later amendments (# PUA02202207243036) [Sample size was based on 95% confidence level to detect differences in surface roughness and mineral content between eroded enamel surface as opposed to eroded enamel surface preceded by BAG45S5 application. Dionysopoulos et al. reported mean ± SD difference in surface roughness of eroded enamel pre-treated with Bioactive Glass = 0.002 ± 0.001, whereas it was 0.006 ± 0.01 for eroded enamel [