Resumen

PINEDA, Patricia; FUENTES, Ramón  y  SANHUEZA, Antonio. Prevalence of Dental Agenesis in Children with Mixed Dentition of Teaching Assistant Dental Clinics at the Universidad de La Frontera. Int. J. Morphol. [online]. 2011, vol.29, n.4, pp. 1087-1092. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022011000400002.

The purpose of this study (cross sectional and descriptive) was to determine the prevalence of dental agenesis (hypodontia) in children with mixed dentition attending the teaching assistant dental clinics at the Universidad de La Frontera, 2009. We examined 307 children between 6 and 11 years, who met the inclusion criteria. The prevalence of agenesis in the studied population was 4.2% (13/307), with female individuals being the most affected, 5.9% (9/153). According to the order of frequency, the most affected by tooth agenesis was the second premolar, with a value of 4.2% (13/307). Followed by the second premolar, the value was 3.3% (10/307), 1.3% (4/307) of the lateral incisor and 0.33% (1/307) of the first premolar. There were no radiographic findings of agenesis of upper lateral incisor and first premolar. This study allowed us to obtain significant indicators of the population studied, and also note the importance of early diagnosis of this anomaly, which leads to intercept alterations in the occlusion.

Palabras llave : Dental anomalies; Agenesis; Oligodontia; Hypodontia; Hyperdontia; Prevalence.