Yuanita T, Setyabudi S, Adjani QS. The effect of theobromine and NaF 2% exposure to enamel surface hardness after immersing in orange juice beverage. CDJ [Internet]. 2020 Jun. 25 [cited 2024 Aug. 4];9(2):70-3. Available from: https://e-journal.unair.ac.id/CDJ/article/view/20101