Febrianti L, Nawangsari D, Silvia F A. FORMULATING FORMATION OF COCONUT SHELL (Cocos nucifera L) ACTIVE CHARCOAL FOR TEETH WHITENING . JFSI [Internet]. 2021Oct.20 [cited 2025Jul.8];4(2):50-7. Available from: https://www.journal.stifera.ac.id/index.php/jfsi/article/view/88