A Comparison of Yogurt and Probiotic Supplements Effects on the Hardness of Tooth Enamel: An In vitro Study: Perbandingan Pengaruh Yogurt dan Suplemen Probiotik terhadap Kekerasan Enamel Gigi: Studi in Vitro. Dentika Dental J. 2022;25(2):72-77. doi:10.32734/dentika.v25i2.8575