Prevalence of supernumerary teeth in a mexican sample

Abstract

Objective: The aim of this study was to estimate the prevalence and conditions of supernumerary teeth not associated to syndromes in the University of Latin America Orthodontics Department Campus Valle in Mexico City. Material and methods: A retrospective study was made using 1038 panoramic radiographs, 622 females and 416 males, ages between 9, and 57 years old in a period of time of 20 months. Considering age, sex, classification of the supernumerary tooth and location. The variables of gender, number, and age, were specified in rates as well as the Mean, and standard deviation respectively. Results: 40 supernumerary teeth were found in 29 patients (2.8%), 17 in males, 12 in females. In accordance to their classification, the next rates were found: mesiodens 35%, conical 20% and tuberculated 15%, supplemental molars 22.5%, supplemental premolars 17.5%, supplemental cuspids and lateral incisors 10% each. With respect to their location, there is no statistically significant difference between maxilla and mandible (p = 0.168). Conclusions: It seems that the mesiodens are the most frequent supernumerary teeth, being the upper maxilla the most affected in males, although females had more supernumerary teeth.Key words: Supernumerary teeth, prevalence, standard deviation, number.