*The tactics of treating such patients with cavities of 4/0 depend on the etiology and depth of the change in the color of the tooth. Currently, such teeth are treated by external or internal bleaching or by less conventional methods: indirect restoration and artificial crowns.
**The tactics of treating such patients with cavities of 4/4: use of a fiber post is recommended.
In the available medical literature, we did not find any works devoted to the questions of clear cavity classification. At the present stage of the development of dentistry, the dynamic growth of new knowledge, technologies and materials significantly changed the methods of treating defects of dental hard tissues.12 In clinical cases where the cavity is located subdingivally, the “Cervical Margin Relocation” (CMR) can be used. During the period of dentistry development, various CMR techniques have been developed and studied gaining popularity among dental practitioners; however, there is no clear classification of gingival cavities.3,13-16
The importance of dental restoration using fiber posts is being discussed as well. After endodontic treatment of teeth, it is recommended to use a fiber post, as there is a greater loss of dental tissue, i.e. the decisive factor in choosing the method of treatment is the amount of lost hard tissue. 3,17-20
In the SI/STA classification system, there is no clear distinction between isolated carious cavities, located on one tooth surface, and combined lesions that involve several surfaces. The disadvantage of this classification is the characteristics of mainly chewing teeth, without involving the anterior ones.3,15
The choice between direct and indirect restoration is complicated by the fact that it does not depend on the objective factors. It depends on the dentist’s knowledge, habits, preferences and stereotypes concerning the treatment of such pathologies; the patient’s consent, financial capabilities and other factors that have nothing to do with the methods of evidence-based medicine, i.d. the absence of a cavity classification formed a methodological gap in treatment of this pathology.