XXXX in Norwegians aged 7-18 years.

@entity1 @entity8495 @entity130
- In this prospective study, baseline information regarding @entity130 to permanent teeth is presented. The aim of the study was twofold: to increase the knowledge of @entity8495 in young Norwegians and to examine whether a rise in the number of dental @entity130 had occurred during the last 10-15 years. Both an urban and a rural area were included, constituting 12% of the 7-18-year-olds living in the country. A total of 1275 @entity1 in this age group suffered @entity8495 in the capital city of Oslo and in the rural area of Nord-Tr  ndelag during a 1-year registration period. The @entity1 were examined by calibrated dentists in the public dental health service. The service offers regular, free recalls, and 98% of the @entity1 attend. The @entity8495 were classified according to WHO's classification system. The dental @entity130 incidence found was 1.8% (2.0% in Oslo and 1.3% in Nord-Tr  ndelag). Nearly 50% of the @entity1 were in the age group 8-10 years. Ninety-seven per cent of the accidents involved the incisors, and the minor @entity130 dominated. Age and gender were predisposing factors. @entity1 were nearly twice as often injured as @entity1 and this difference increased with age. No increase in the annual frequency of @entity8495 was observed.
