Fitri, H., N. Kasuma, H. Hardisman, and H. Ali. “Effect of Adjunctive Collagen Gel Therapy on Salivary Matrix Metalloproteinase-8 Levels in Gingivitis Following Scaling and Root Planing”. Journal of Pharmaceutical and Sciences, vol. 9, no. 2, May 2026, pp. 1262-8, doi:10.36490/journal-jps.com.v9i2.1500.