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Acta odontol. venez ; 50(1)2012. tab, graf
Article in Spanish | LILACS | ID: lil-676742

ABSTRACT

La retención dentaria es una anomalía en la que una vez llegada la época normal de erupción, permanecen los dientes en el interior de los maxilares manteniendo la integridad de su saco pericoronario, pudiendo producir en su intento de erupción accidentes patológicos de variado aspecto e intensidad. Una de las causas se debe a que los maxilares de la especie humana son de menor tamaño que los de nuestros antecesores, y de esta manera no es posible alinear armónicamente los 32 dientes. La radiografía panorámica es de gran utilidad para diagnosticar esta lesión, sin manifestación clínica en algunos casos. Sobre una muestra de 1000 pacientes, desde los 6 hasta los 92 años, se diagnosticaron 334 retenidos; 180 en mujeres y 154 en varones. Las retenciones dentarias halladas fueron: 131 correspondieron a terceros molares inferiores, 70 derechos y 61 izquierdos; 107 correspondieron a los terceros superiores, 58 derechos y 49 izquierdos. Caninos permanentes 52: 43 superiores, y 9 inferiores. Premolares: 28, 20 inferiores y 8 superiores. El análisis de varianza nos indicó que hay diferencias significativas entre edades analizados por décadas pero no se halló diferencias entre sexos.


An impacted tooth is a dental anomaly in which a dental piece remains enclosed into the jaw after the normal eruption age is reached, despite it usually keeps the physiology of the pericoronal sac; but it is known to cause some pathological accidents of varying kind and intensity during the tooth's attempt of eruption. One of the reasons for this anomaly is probably the fact that the jaws of the human species are smaller in size than those of our ancestors, so it is almost impossible for the 32 teeth to be aligned in a harmoniously way. The panoramic radiography is very helpful to diagnose this abnormality, which in many instances may occur with no clinical manifestations. 1000 radiographs, taken from 6- to 92-year-old patients, a total of 334 impacted teeth were found, 180 female and 154 in male; their distributions were as follows: 131 lower third molars, 70 right and 61 left; 107 were upper third molars, 58 right and 49 left; 52 permanent canines were found, 43 upper and 9 lower; 28 premolars, 20 lower and 8 upper.The variance analysis indicated that theres`s a significate difference between the analized ages per decades, but there were no differences found between sexs.


Subject(s)
Humans , Male , Female , Cuspid/anatomy & histology , Molar/anatomy & histology , Bicuspid/anatomy & histology , Radiography, Panoramic/methods , Denture Retention/methods , Dentistry , Data Interpretation, Statistical
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