Mayasari, Rizka Amelia, Sianiwati Goenharto, and Ahmad Sjafei. 2011. “Betel Leaf Toothpastes Inhibit Dental Plaque Formation on Fixed Orthodontic Patients”. Dental Journal 44 (4):169-72. https://doi.org/10.20473/j.djmkg.v44.i4.p169-172.