Results of the research and their discussion
We relied on the well-known prototypes of SI/STA classification proposed by Mount GJ and Hume WR (1998), and modified by Lasfargues JJ et al. (2000).6,9 On the basis of conducted experimental researches,10 own scientific hypotheses, meta-analysis of scientific literature, clinical experience, we have developed the cavity classification.
The first division was made according to the depth of destruction (DD):
0 – the cavity is not determined (demineralization, discolorite, changes in the anatomical shape of the tooth).;
1 – defeat of enamel and initial defeat of dentin, cavity depth within the outer 1/3 dentin;
2 – moderate defeat of dentin, depth of cavity in the middle third of dentin;
3 – deep dentin damage, depth of the cavity within the circle of the pulp dentin,
4 – teeth after endodontic treatment.
The next division we conducted on several parameters: location of defects (L), occlusion load (O), volume of cavity (V). All the cavities were divided into 4 groups (LOV) (Fig. 1 ):