Distribution of certain types of XXXX among Saudi Arabian adolescents in Jeddah city.

@entity432 @entity1 @entity601
OBJECTIVES: To assess the distribution of certain types of @entity432 in a sample of Saudi adolescents aged 13-15 years in Jeddah city. DESIGN: Across-sectional study. CLINICAL SETTINGS: Clinical examination of Saudi adolescents was carried out in the screening clinics, Faculty of Dentistry, King Abdul-Aziz University. @entity432 were recorded according to Bj  rk and Co-workers (1964). @entity1 : 1,024 adolescents aged 13-14 years (608 males and 416 females) were randomly selected from ten intermediate schools. @entity1 were invited to dental school during the "Annual Dental Health Week" as a part of collaborative efforts between King Abdul-Aziz University and Ministry of Education. MAIN OUTCOME MEASURES: Distribution of post-normal occlusion, pre-normal occlusion, bimaxillary protrusion, overjet, @entity601 and maxillary and mandibular crowding were calculated for the examined subjects. RESULTS: Only 9% of the examined adolescents had normal occlusion. Post-normal occlusion, pre-normal occlusion and bimaxillary protrusion represented 21%, 15% and 8% of the studied sample respectively. Moderate and severe overjet and overbite accounted for 24% _ 5% and 27% _ 13%, respectively. @entity601 was detected in 24% of the students. Mild, moderate and severe maxillary and mandibular crowding represented 9%, 26% _ 4% and 11%, 38% _ 9%, respectively. All the studied occlusal parameters except bimaxillary protrusion were statistically higher in females. CONCLUSION: Ninety one percent of the surveyed subjects exhibited some @entity432 . These anomalies were generally higher among adolescent @entity1 .
