Epidemiological studies have reported the prevalence of inflammatory periodontal diseases of 85%90% in individuals aged 30 years. Predicting the possibility of preserving teeth is an important integral part of treatment planning for periodontitis. Traditionally, the prognosis is based on the likelihood of tooth loss. The article presents a review of the literature characterizing the factors that affect the prognosis of the service life of teeth in case of periodontitis. For the literature review, a literature search was performed on the MedLine, EMBASE, CyberLeninka, and eLibrary databases. The following factors should be considered when assessing the long-term prognosis in patients with the highest risk for tooth loss: severity of periodontitis, smoking, bruxism, number of abutment teeth, age, type of tooth, depth of probing the periodontal pocket, bone loss, furcation involvement, root mobility and proportions, and tooth crowns. Indicators for molar loss include furcation lesion, bone loss progression, endodontic treatment, persistent periodontal pocket, age, female sex, smoking, and diabetes mellitus. A favorable treatment result and preservation of teeth depend on the entire group of teeth, with the following values: 85% in single-rooted anterior teeth, 78% in premolars, and 47% in molars. The low accuracy of standard predictive tooth loss indices can be explained by the point that the indices are mainly based on factors related to teeth and do not take into account the influence of patient-related factors. Thus, predicting the service life of teeth with periodontitis is a difficult task and requires taking into account both individual indicators of periodontal status and general factors.

Tooth decay is the most common dental disease in children, so the problem of prevention remains one of the most relevant in pediatric dentistry. Goal: development and implementation of health education and individual treatment and prevention activities for school-age children. Materials and methods. School-based SOUTH of the city of Moscow, teachers and students of the third year was held a programme for the prevention of dental diseases among pupils in primary classes, attended by 2300 people. Results. Employees of the Department of therapeutic Stomatology RNIMU them. N.i. Pirogov was established private dental diseases prevention programme, which already operates within 6 years the intensity of caries in permanent teeth CPU index teeth fell in children age 6 with 2.40 ± 0.06 to 0.97 ± 0.06 (p < 0.05), 12-year-olds with 3.74 ± 0.17 to 1.95 ± 0.16 (p < 0.05), 15 year olds with 4.86 ± 0.16 to 2.95 ± 0.13 (p < 0.05); reduction of intensity of caries increment amounted to 59.6%, respectively, 47.9% and 39.3%, with an increase in the number of children with healthy teeth that says showing clear positive impact on the level of oral hygiene Program Prevention of dental diseases.

The high prevalence of periodontal diseases, up to 90%, is an important issue in medicine. The periodontal biotype is one of the most important parameters that determine the course and prognosis of periodontal diseases. Gingival thickness, keratinized tissue, and bone morphology are the main characteristics of the periodontal biotype. This article presents a review of the literature on the characteristics of periodontal biotypes, their response to treatment, and treatment prognosis. A search of electronic databases (Medline, EMBASE, CyberLeninka, Elibrary, and RINC) was performed for the literature review. The article also presents studies about relationships among periodontal biotype, recession, and malocclusion. The thin biotype is a predictive factor of gingival recession. Recessions are characterized by apical migration of marginal gingiva and defects in root coverage. Gingival recession may result from orthodontic movement of teeth, particularly among patients with the thin gingival biotype. The thin and thick biotypes respond differently to inflammation, restorative and surgical effects, and parafunctional habits. A gingival thickness greater than 2 mm can be categorized as the thick biotype and less than 1,5 mm as the thin biotype. Gingival thickness can affect the results of restorative therapy and root coverage procedures. It is necessary to determine the gingival biotype before initiating treatment. Special care must be taken when planning treatment for cases with a thin biotype.