Combination Effect of Collagen-Chitosan Hydrogel and Injectable Platelet-Rich Fibrin Fractionation on Osteoblast Migration and Proliferation

Injectable Platelet Rich Fibrin (i-PRF) is a popular periodontal regenerative therapy in dentistry. i-PRF centrifugation resulted in the fractionation of the yellow layer and buffy coat with a red layer. The red i-PRF contains a greater number of Growth Factor carrier cells than yellow layer, besides that liquid-PRF has a suitable consistency so it easy to combine with other biomaterials. Another biomaterial that can be combined with i-PRF is collagen-chitosan with hydrogel preparations. This study aims to determine the effect of a combination of collagen-chitosan hydrogel formulation with injection of platelet-rich fibrin fractionation on osteoblast cell migration and proliferation. This type of research was an experimental laboratory divided into 3 groups, which were given a combination of the collagen-chitosan hydrogel and i-PRF red layer, a combination of collagen-chitosan hydrogel and i-PRF yellow layer, and only a combination of collagen-chitosan hydrogel. Chitosan collagen hydrogel was prepared with a collagen/chitosan ratio of 25/75, then mixed with i-PRF fractionation with a ratio of 1:1. The cell proliferation test used CCK-8, while the cell migration test used scratch wound healing. Data were tested with One way ANOVA for cell migration and Two way ANOVA for cell proliferation, followed by a Post Hoc test. The results showed that migration of osteoblast cells after 24 hours in the combination group of chitosan collagen hydrogel and i-PRF red layer was higher than the other groups with significance (p<0.05). The results of osteoblast cell proliferation on days 1, 3, and 5 in the combination group of chitosan collagen hydrogel and i-PRF red layer were also higher than the other groups with significance (p<0.05). This study concluded that the combination of chitosan collagen hydrogel with injectable platelet-rich fibrin red layer had a more effect on increasing the migration and proliferation of osteoblast cells than the other groups.