1. Bykov V.L. Histology and embryology of human oral organs. Uch. settlement for honey. higher educational. SPb.: Spets. literature, 1999. 246 p. (In Russ.)
2. Soloviev V.A. Morphological and historicocritical study teething. Dentistry. 1980;59(1):9-11. (In Russ.)
3. Denisenko D.V. Age of eruption of permanent teeth in different regions: modern aspect. Siberian medical journal. 2006;3:9-12. (In Russ.)
4. Yasvoin G. V. On the differentiation of dental pulp tissue and the formation of dentin. Modern problems of dentistry. М., 1953:66-95. (In Russ.)
5. Рersin L.S., Yelizarovа V.M., Dyakova S.V. Pediatric dentistry. M.: Medicine, 2003. 640 p. (In Russ.)