Matviykiv Т.І. , Rozhko М.М. and Gereliuk В.І. 2021. Priority of clinical application of photodynamic therapy using the HELBO Thera Lite laser in the treatment of perodonton tissues in parodonton tissues. Actual Dentistry. 4 (Nov. 2021), 6–10. DOI:https://doi.org/10.33295/1992-576X-2021-4-6.