During abnormal conditions of the body, the following changes in the dentition: Transformation of dental elements as changing their shape, color, number and size. Violation of bone formation, lack of mineralization, tuberculosis, diseases of the nervous and endocrine systems, wrong location dental germs, periodontitis first dentition, impaired the development jaws provoke delayed teething. Inhibiting the eruption is most often seen on the lower dental elements (third molars and second premolars) and maxilla (permanent teeth). Sometimes there is a time before the eruption, which is associated with akseleratsionnymi processes. Also in the list of anomalies can be made in excess of the required number of teeth (they are often in constant change and do not have the desired shape), reduced number of teeth, their fusion or fusion, abnormal root development, enamel, formed above the norm. The most frequent pathology relate shapes, colors, as well as the number and size of the tooth roots