Amphodontitis

Amphodont (Greek amφός - for both; dόρπός - mouth) is the opposite action of the fissure, that is, a bite in which the cutting edges of the upper teeth protrude from the mucous membrane of the mouth of the antagonists - the lower jaw and rub against them. With the reverse action of the fissure (hypoconical in the case of lower teeth and hyperconical in the case of upper teeth), a protective reaction of the tissues of the lateral surfaces of the teeth is observed, manifested in their regrowth (retention) or the formation of secondary crowns (secondary roots). In the lateral section of the tooth, there is a body (the tissue that makes up it) and the root part, immersed in the alveolus or sitting in the intraosseous dental alveolus, as in a bone fossa (pit): in this fossa the tooth sits tightly and is completely covered with gum, attached to it as if on loops or suction cups. The base of the dental crown and the apex of the root are located in the periodontal sulcus. In relation to the outer surfaces of the tooth, the dental alveolus is a cavity in the shape of a truncated cone with two curvatures: the larger maxillary curvature and the smaller mandibular curvature; The size of the root part of the tooth and the thickness of the body in the section are determined by the straight cone of the rudiments. The bodies of a person’s teeth remain alive throughout their lives, although they may undergo some reduction. The tooth germ corresponds to the current system of permanent teeth. Thus, the 8th tooth in an adult corresponds to the eighth tooth of a person aged 7 years.