Aim:
To determine the prevalence and structure of periodontal diseases among the population of Ukraine using the AAP/EFP 2017 Classification.

Material and methods:
A retrospective analysis of electronic outpatient medical charts of dental patients aged 25 to 75 years was conducted; the patients were divided into 3 groups depending on age. According to the data contained in the charts, each patient was diagnosed according to the AAP/EFP 2017 Classification. Statistical methods were used to determine the associations between age, gender and periodontal tissue condition, prevalence of inflammation, stage and grade of periodontitis.

Results:
There were 12.8% of patients with intact periodontal tissues, 54.4% of patients were diagnosed with gingivitis, and 32.8% of patients were diagnosed with periodontitis. The most common diagnosis among patients with periodontitis was generalized periodontitis of stage II, grade B (25.9%). Statistically significant relationships were found between age and the presence of periodontal pathology, its prevalence, stage and grade of periodontitis. In addition, associations between gender and the condition of periodontal tissues and the stage of periodontitis were found.

Conclusions:
In patients of different age groups and genders, gingivitis was the most common diagnosis, and generalized moderate form prevailed in the structure of periodontitis. Age and gender affect the risk of occurrence and clinical course of periodontal diseases. The use of AAP/EFP 2017 Classification in clinical practice provides an individualized approach to treatment planning for patients with various periodontal tissue lesions.