There is a concept of "tooth stability", which, according to dentists, is ensured by the state of periodontal tissue and alveolar bone. When discussing this concept, the experts draw attention to the interdental ligament, passing over the tops of the interdental partitions and connecting the adjacent teeth with the bundle of connective tissue fibers, as well as the severity of interproximal contacts, the teeth axes direction that forms the compensatory curves, and the ratio of intra- and extraalveolar parts of teet
