The Relevance of the Research Topic and the Degree of its Elaboration
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Univer Publishing
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Dental diseases are among the most common in the world, and dental anomalies and deformities occupy the third place among them after caries and periodontal diseases. Their prevalence according to the literature is in the range from 11.4 % to 80 %.
Timely teething is one of the important indicators of the normal development of the chewing apparatus (KhoroshilkinaF.Ya. 1979, 2006; Mishutina O.L., 2006; Postnikov M.A., 2009; GioevaYu.A. 2014; Persin L.S., 2016; Kozlov V.A., 2017;
Omlnel L., Sipher D., 1987). Retention of individual teeth is often the cause of impaired formation of dentition, their closure, functional and aesthetic deviations (Mannanova F.F., 1998; Persin L.S., 2016; Harzer W., Reinhardt A., Soltes K., 1989; Hyomoto M., Kawakami M., Inoue M., Kirits T., 2003).
According to various data, the prevalence of tooth retention ranges from 4% to 29% among all dental anomalies (Shulkina N.M., 1985; KhoroshilkinaF.Ya., Zhigurt Yu. I., 1997; Persin L.S., 1995, 2016; Korsak A.K., 1999; Korbendau J.-M., Patti A., Weiss J., 2009).
Currently, there is a tendency towards an increase in the proportion of adult patients, which is 68% of the total number of those who have applied for orthodontic care [Kalivrajian E. S., 2003]. This group is the most vulnerable to relapse. Often in the treatment of vertical incisor dysocclusion, repeated orthodontic treatment is required.
Keywords
aesthetics of the face, facial proportions, anthropometric parameters, telerentgenograms of the head, computed tomograms of the head, 3D models