Introduction: Tobacco smoking is very common among adolescents and children, every third child is 12-14 years old and every second child over 15 years old smokes cigarettes (Picas OB, 2016). Adolescents are known to be most vulnerable to the effects of tobacco smoke, its toxic and allergenic effects, due to the immaturity of functional physiological mechanisms of regulation of organs and systems (Goniewicz ML et al., 2014; Zakut Yara Salah et al., 2021).

Aim: The study was to investigate the clinical efficacy of topical treatment of catarrhal gingivitis in adolescents and adolescents who smoked. 

Materials and methods: To assess the clinical effectiveness of the proposed treatment complex, 78 adolescents and adolescents aged 15 to 24 years were examined and treated. Patients after a comprehensive dental examination, depending on local treatment, were divided into two observation groups: the main group consisted of regular smokers and received the proposed treatment complex – 48 people; the comparison group included people who smoked regularly and received standard treatment – 30 people. Clinical dental examination included: examination, determination of indices. 

Results: Clinically, there was a significant improvement in the condition of periodontal tissues, which is confirmed by index data. Motivational conversations were held with all participants of the study on the dangers of smoking and the need to quit smoking, because without smoking cessation there will be no positive results in the treatment of periodontal diseases. The value of the PMA index before treatment averaged 37,8±2,11% and varied after treatment in the main group to 3,1±1,43%, in the comparison group, respectively, 6,4±2,32%. The bleeding index was 1,68±0,02 before treatment and after treatment 0,21±0,01 in adolescents of the main group and 0,69±0,03 in subjects of the comparison group. The indicators of the Green – Vermillion hygiene index varied from 1,85±0,04 to 0,15±0,03 points (main group) and 0,36±0,02 points (comparison group). The results of clinical observation during treatment showed high efficiency of the proposed method. 

Conclusions: Thus, the use of the proposed complex reduces bleeding gums, eliminates the inflammatory process in periodontal tissues, improves tissue regeneration, increases the clinical effectiveness of local treatment.