Yuanita, T., N. Zubaidah, and J. Ceren. “DIFFERENCES IN SURFACE HARDNESS OF BOVINE ENAMEL AFTER EXPOSURE OF THEOBROMINE, ALKALOID COCOA POD EXTRACT AND ACIDULATED PHOSPHATE FLUORIDE”. Conservative Dentistry Journal, vol. 10, no. 2, June 2020, pp. 71-74, doi:10.20473/cdj.v10i2.2020.71-74.