BATUBARA, FITRI YUNITA et al. DIFFERENCES IN THE EFFECT OF APPLYING 6% AND 12% HYDROXYAPATITE PASTE FROM DUCK EGGSHELLS (ANAS PLATYRHYNCHOS) WITH CASEIN PHOSPHOPEPTIDE-AMORPHOUS CALCIUM PHOSPHATE (CPP-ACP) AS REMINERALIZING MATERIALS ON ENAMEL SURFACE HARDNESS (IN VITRO). International Journal of Applied Pharmaceutics, [S. l.], v. 17, n. 6, p. 478–484, 2025. DOI: 10.22159/ijap.2025v17i6.54801. Disponível em: https://www.journals.innovareacademics.in/index.php/ijap/article/view/54801. Acesso em: 5 dec. 2025.