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Teeth (dentes). Serve for biting and chewing food, and are also involved in sound production .
We distinguish between two human generation Z. - the so-called milk (shortfall ) and constants. Bookmark dairy Z. begins on 6 -7th week of embryogenesis. In developing teeth distinguish 3 periods: the formation of dental germs ; differentiation dental germs and histogenesis teeth. In the first period there is ingrowth of epithelium covering the mouth hole , into the underlying parenchyma and formed two braces - the top and bottom of the form podkovok . Along the edges of these plates appear kolboobraznye epithelial proliferation (tooth or enamel , organs ) , 10 on each plate that corresponds to the number of future mammary epithelial education Z. These rapidly changing shape due to ingrowth of mesenchyme in them and take the form of a bell. Growing into dental mesenchyme authorities called dental papilla . Around dental organ and dental papilla mesenchyme formed a special shell - dental sac . In the second period of the originally homogeneous cells of the dental organ and dental papilla differentiate qualitatively different cellular elements . From the inner layer of the dental organ formed ganoblast involved in the formation of enamel from dental papilla odontoblasts allocated , of which subsequently formed dentin. Histogenesis period characterized by the formation of dentin , enamel and other tissues Z. Development roots occurs just before the eruption of the cement produced from Z. cementoblast , differentiating in the inner layer of dental sac . Dental papilla formation as Z. turns to pulp tissue .

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