Abstract
Objective: To determine the prevalence of dentalanomalies in patients aged from 4-12 years-oldthrough radiographic examination. Materialand Methods: 523 panoramic radiographs andfile records were selected and analyzed by 3calibrated examiners. The material was selectedfrom the Orthodontic and Pediatric Dentistry filesof Child Clinics of the Science and TechnologyInstitute of Sao Jose dos Campos of the Sao PauloState University, including only those with highquality and contrast. Data were submitted tostatistical analysis. Results: The tabulated datawere statistically analyzed by Mann Whitneytest and Fisher’s exact test. There was a higherincidence of abnormalities in females (56.72%).It was found 7 cases (1.34%) of supernumeraryteeth, 47 cases (8.99%) of anodontia, 45 cases(8.60%) of impacted teeth, 28 cases (5.35%) ofdilacerated teeth, and 7 cases (1.34%) of ankyloseddeciduous teeth. Conclusion: According to thesample studied, dental anomalies were presentin 25.62% of the children. Considering thenumber of supernumerary, ankylosed, impactedand dilacerated teeth, there were no statisticaldifferences between genders. There was statisticaldifference between genders regarding to thenumber of anodontia, with higher predominancein females.KeywordsDental anomalies; Children; Deciduous teeth; Panoramic radiograph.
Highlights
Human dentition is composed by deciduous and permanent dentitions
Tooth anomalies were found in 82 radiographs, representing 15.68% of sample
The study of tooth developmental anomalies is of great importance in Dentistry
Summary
Human dentition is composed by deciduous and permanent dentitions. The formation of the teeth initiates from dental lamina which is a band of the oral epithelium of maxilla and mandible. Concerning to deciduous teeth, this formation begins between the 6th and 8th weeks of intrauterine life. For permanent teeth, this process of development starts around the 20th week of intrauterine life [1]. The etiologic factor of congenital anomalies acts on the phase of intrauterine formation by altering the composition and/or function of the affected organ, which occurs in the acquired anomalies. In this latter, the etiologic factors act on the phase of post-natal formation. The main causes of congenital and acquired anomalies are infections, traumas, temperature variations, and nutritional intoxications from chemical substances
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