Rozhko М.М., Ilkiv М.М. and Gereliuk В.І. 2020. Application efficiency of platelet enriched fibrin and hydroxyapatite Kergap in complex treatment of II–III degree generalized periodontitis. Actual Dentistry. 2 (Jul. 2020), 34–39. DOI:https://doi.org/10.33295/1992-576X-2020-2-34.