Matviykiv Т. І., Rozhko М. М., and Kateryniuk В. Ю. “The Efficacy of Helbo Therapy in the Treatmentof Periodontal Tissue Diseases After Coronavirus Disease”. Actual Dentistry, no. 5 (January 22, 2022): 40–45. Accessed July 11, 2026. https://dentalexpert.com.ua/index.php/stomatology/article/view/439.