Asdar Gani, - and Risfah Yulianty, - and Supiaty Supiaty, - and Machirah Rusdy, - and Gustivanny Dwipa Asri, - and Dian Eka Satya, - and Ayu Rahayu Feblina, - and Harun Achmad, - Effectiveness of Combination of Chitosan Gel and Hydroxyapatite from Crabs Shells (Portunus pelagicus) Waste as Bonegraft on Periodontal Network Regeneration through IL-1 and BMP-2 Analysis. Hindawi International Journal of Biomaterials Volume 2022.