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.

Self-reported satisfaction with teeth and associated factors in 12-year-olds.

Objectives: To explore self-reported satisfaction with teeth in 12-year-old children, and to study whether satisfaction was associated with child characteristics, oral health behaviours and previous experiences with teeth and dental treatment.

Methods: Data were retrieved from dental records of 4725 children and questionnaires including information on satisfaction with teeth, gender, parents' origin, parents' education, dental anxiety, tooth brushing frequency, use of dental floss, toothache, pain at last dental visit and caries. Informed consent was obtained from all participants.

Oral health behaviours in 12-year-olds. Association with caries and characteristics of the children?

Objective: To explore frequency of tooth brushing, dental flossing, fluoride supplements and sugar snacking in 12-year-olds, and to study how these oral health behaviours were associated with background characteristics and caries prevalence.

Material And Methods: The study included 4779 children. Data were collected by clinical examination and questionnaires regarding oral health behaviours and child characteristics.

Recall intervals in children are individualized and extended.

The aim of this study was to follow attendance patterns longitudinally by exploring length of intervals between routine dental examinations in children at the ages of 5 and 12 years, and study associations between length of recall intervals and caries prevalence, controlled for gender, parent's background and parent's education. The study included 2960 children in one Norwegian county monitored from 5 to 12 years of age. Data were collected at clinical examinations, from dental records and by parental questionnaires.

Identification of caries risk in 2-year-olds.

Objective: The first aim was to describe presence of plaque, caries and oral health behaviours in 2-year-old children. The second aim was to measure increments in caries experience from 2 to 5 years of age and to study whether national background, visible plaque, caries and oral health behaviour at 2 years of age were associated with increments in caries experience.

Methods: The study population consisted of 392 children, of whom 211 were monitored from 2 to 5 years of age.

Intrusive luxation of permanent incisors in Norwegians aged 6-17 years: a retrospective study of treatment and outcome.

Background/aim: External replacement resorption (ankylosis-related) is a severe complication leading eventually to tooth loss. Little information exists regarding the influence of variables such as degree of intrusion or treatment method on the development of replacement resolution in intruded permanent incisors. The aim of this study was to report the most frequently involved age group, the preferred type of treatment, and the type and frequency of healing complications.