الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The aim of this study was to reveal the prevalence of certain dental anomalies, in a group of young Egyptian children.Materials and Methods:1000 Egyptian children between the age 6 -14 years (with mean age ≈ 10 years old ) who attended the ‘Pediatric Dentistry and dental public health’ and ‘Orthodontic’ outpatient Departments clinics of Faculty of Oral and Dental Medicine , Cairo University for routine dental treatment . This study was composed of both clinical and radiographic examinations. Children were screened for the presence of aplasia of lower second premolars and upper lateral incisors, Peg-shaped lateral incisors, infra-occluded primary molar, enamel hypoplasia, ectopically erupted first permanent molar, lingually erupted lower incisors, supernumerary teeth, fusion and germination. The prevalence of each anomaly was calculated and compared between sexes.Results: The total study sample composed of469 boys (46.9%) and 531 girls (53.1%).Dental anomalies were found in 111 children representing 11.1% of the study sample, 103 cases had one anomaly (10.3%) while 8 cases had more than one anomaly(0.8%). The most commonly detected dental anomalies were Enamel hypoplasia(3.3%) and Supernumerary teeth (1.8%). The total prevalence of aplasia of second premolar and upper lateral incisors was 1.7% and 0.7% respectively. Peg-shaped lateral incisor was detected in 0.8 % . The prevalence of fusion and germination was 0.4 % and 0.1% respectively. Infra-occlusion was detected in 0.5%. Ectopic eruption of permanent molars was the rarest 0.2%. Conclusions:Dental anomalies found were not related to a disease or syndrome. No significant statistically difference between males and females ,except in peg-shaped lateral incisors and supernumerary teeth.