Effendi, M. Chair, Yuli Nugraeni, and Rizki Widya Pratiwi. “The Effect of Soda Immersion on Nano Hybrid Composite Resin Discoloration”. Dental Journal 47, no. 1 (March 1, 2014): 37–40. Accessed August 2, 2024. https://e-journal.unair.ac.id/MKG/article/view/748.