Hadistio, R. R., Simamora, W. S., & Muis, A. (2024). Development of Android-Based Smart System for Gingivitis Diagnosis Using Certainty Factor. Sinkron : Jurnal Dan Penelitian Teknik Informatika, 8(1), 556-563. https://doi.org/10.33395/sinkron.v9i1.13361