Introduction. Scientists have proved that the initial stage of caries associates with enamel demineralization, which is the result of exposure to the tooth surface of organic acids that are produced by microbial of plaque. Therefore one of the important factors of caries prevention is to control the level of oral hygiene.
The purpose of the study. Determining the level of oral hygiene and periodontal tissue condition.
Materials and methods. Study was conducted on 19 children age 2–5. There were evaluated the level of oral hygiene using indexes: Silness–Loe, Stallard. Condition of periodontal tissues was assessed depending on the severity of the inflammatory process (PMA, %), and using index CPITN.
Results of the study indicate that the oral hygiene in children of 4–5 years is poor in 52%. Number of children 4–5 years old with healthy periodontal tissues is reduced. The prevalence of symptoms of inflammation in children 4–5 years old is 56%, and 2–3 years old is 22.7%. Therefore, these data indicate a deterioration of oral hygiene and periodontal tissue condition of preschool children inTernopol.