Rosaini H, Wahyuni R, Nadia S, Sidoretno W, Hendrika Y. Nanocrystalline Toothpaste Formulation of Usnic Acid and Antibacterial Activity Test Against Streptococcus Mutans. JPK [Internet]. 24Jul.2023 [cited 14May2024];12(1):70-6. Available from: https://jurnal.pkr.ac.id/index.php/JPK/article/view/677