Asdar Gani, - and Risfah Yulianti, - and Aisyah Bella Azzanjani, - and Sulfadliana, - and Ummi Salmiah Sari, - The Role Of Chitosan And Hydroxyapatite Materials In Periodontal Tissue egeneration: A Literature Review. Journal of Pharmaceutical Negative Results ¦ Volume 13 ¦ Special Issue 10 ¦ 2022.