In order to study the effectiveness of dental plaque removal using low frequency ultrasound and an ozonated contact medium obtained from an ozone generator by ultraviolet radiation in the treatment of catarrhal gingivitis of young people the 54 patients aged from 18 to 22 years with a diagnosis of chronic generalized catarrhal gingivitis were examined and treated. All patients were divided into two groups of 27 in each one. The first group was a control group and these patients had dental deposits removed without ozonation of the contact medium. In the second group the removal of dental deposits performed with ozonation of the contact medium obtained from an ozone generator producing ozone by ultraviolet radiation. The level of hygiene was assessed by the Oral Hygiene Index Score (OHI-S). The inflammation severity was assessed using the Papillary Marginal Alveolar Index (PMA). The Papilla Bleeding Index (PBI) used to assess bleeding gums. Determination of capillary resistance to vacuum was carried out according to the Kulazhenko method using the device for vacuum laser treatment “DESNA”. The analysis of rheoparodontograms included qualitative and quantitative assessment. Dental plaque removal using low frequency ultrasound and an ozonated contact medium obtained from an ozone generator by ultraviolet radiation help to reduce inflammation, normalize local blood circulation in the periodontium, prolong the remission time and stabilize the process © 2022. Journal of International Dental and Medical Research.All Rights Reserved.