Molar-Incisor Hypomineralisation: Severity, caries and hypersensitivity.

Objectives: To investigate distribution of affected teeth and severity of molar-incisor hypomineralisation (MIH) in 8-9-year-old children. A second aim was to study association between severity of MIH and hypersensitivity, caries, and affection of incisors and second primary molars (SPM).

Methods: A total of 3013 children in one age cohort participated in a cross-sectional study, of which 851 children were diagnosed with MIH.

Molar-incisor hypomineralisation in Norwegian children: Prevalence and associated factors.

This study investigated the prevalence and associations of molar-incisor hypomineralisation (MIH) in 8-9 year-old children in Oslo. A total of 3013 children in one age cohort participated in the study during their regular dental examination at the Public Dental Service. Hypomineralised enamel defects were recorded according to the European Academy of Paediatric Dentistry criteria for MIH.

Primary tooth injuries in Norwegian children (1-8 years).

Unlabelled: This prospective study examined the yearly incidence of traumatic injuries to primary teeth. The aim of the study was to find out more about dental injuries to primary teeth in Norwegian children. The study was performed in one county of Norway involving approximately 20,000 children in the age group 1-8 years.

Dental injuries in Norwegians aged 7-18 years.

- In this prospective study, baseline information regarding trauma to permanent teeth is presented. The aim of the study was twofold: to increase the knowledge of dental injuries in young Norwegians and to examine whether a rise in the number of dental trauma 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.