One of the ways to preserve the morphological and functional unity of the dentition is the restoration of defects in the hard tissues of the teeth with a total or subtotal loss of the crown part, since the loss of the crown part of the tooth leads to an uneven distribution of masticatory pressure, which, in turn, causes further destruction of the dentoalveolar system. With the complete absence of the crown part of the tooth, root removal is not always justified. The preservation of roots that can be used for prosthetics prevents the formation of defects, deformations of the dentition and atrophy of the jaw bone tissue (E.A. Bragin, 2001, 2003; N.I. Lesnykh, 2004). Treatment of defects in hard tissues of teeth as a result of complicated caries is an important problem in dentistry, which is due not only to the high prevalence of this pathology, but also to the complexity and laboriousness of medical manipulations, a large number of complications with poor-quality treatment. Despite new materials, technologies and instruments appearing in practice, the requirements for reliable and effective orthopedic treatment are constantly increasing. At the same time, the final stage of the treatment of complicated caries is of great importance - the restoration of the crown part of the tooth, which largely affects the outcome of the disease.