Masyhudi; Candra, K. P.; Hardi, E. H.; Ahmad, I.; Panggabean, A. S.; Kuncoro, H.; Nugroho, R. A. Effectiveness of combined bangle rhizome (Zingiber montanum) and black betel leaf (Piper betle var. nigra) water extract in combatting caries-causing oral pathogens using response surface methodology. Agr. Nat. Resour. 2025, 59.