Khomenko Л. О., Ostapko О. І., and Golubeva . І. М. “Modern View of the Classification, Diagnostics and Clinical Manifestations of Gingivitis in Children and Adolescents”. Actual Dentistry, no. 3–4, Oct. 2022, pp. 50-55, doi:10.33295/1992-576X-2022-3-50.