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International journal of odontostomatology

versión On-line ISSN 0718-381X

Resumen

CEBALLOS O, Diego Mauricio; ESPINAL, Gabriel E  y  JONES, Mónica. Development Abnormalities and Dental Training: Odontodysplasia. Int. J. Odontostomat. [online]. 2015, vol.9, n.1, pp.129-136. ISSN 0718-381X.  http://dx.doi.org/10.4067/S0718-381X2015000100020.

The role of genetic alterations in tooth development is essential. It has been discovered that if there is a correct expression of the gene or there is a mutation of this, the individual could present absence or malformations of structures of the oral cavity or other body parts. For this reason we describe how given the development of dental structures, taking into account how genetic and environmental interactions influence their proper development. Among the genes involved are in the PAX9 and MSX1, which according to recent research are involved in congenital absence of dental structures or alterations, considering that the denunciation of these genes or the mutation is inherited. The odontogenic PAX9 and MSX1 genes are homeotic genes (homebox) that encode for transcription factors and are responsible, during odontogenesis, the expression of genes associated with spatial and temporal regulation within the first brachial arch. At some point during organogenesis may be flaws in the expression of the factors necessary for the formation and tooth development, causing among other abnormalities Regional Odontodysplasia (RO), also called ghost tooth or detention tooth dental development located, which is a structural anomaly development complex and rare; seems to be the result of one or more point mutations in the chromosome 4 and 14. In this report we show two cases with odontodysplasia where there are clinical and radiographic features of two patients with this anomaly, one of them has been made up and treatment, and the other begins his analysis stage.

Palabras clave : odontogenesis; morphogenesis; agenesis; regional odontodysplasia.

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