Dental caries, tooth trauma, malocclusion, fluoride usage, toothbrushing and dietary habits in 4‐year‐old Swedish children: changes between 1967 and 1992

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Abstract
The dental health of 4-year-old children in the city of Umeå, northern Sweden, has been followed in cross-sectional studies conducted in 1967, 1971, 1976, 1980, 1987 and 1992. Similar methods and criteria were used. Dental caries and background factors (fluoride usage, toothbrushing frequency and diet) were recorded. In 1971, 1987 and 1992 signs of tooth trauma and presence of malocclusion were also recorded, the latter also in 1976. The present paper summarizes the results of these studies. Between 1967 and 1992 the mean dmfs values declined from 7-8 to 1-8. The decline was greatest between 1967 and 1980 and then levelled off. Toothbrushing frequency was similar over the years, but parental help with brushing was more common in the more recent studies. The use of fluoride toothpaste increased. About 30% of the children had experienced tooth trauma. A unilateral crossbite was recorded in 18% and 16% of the children in 1971 and 1992, respectively, and an anterior open bite in about 35% and 41%, respectively; both types of malocclusion were related to a dummy- or finger-sucking habit.

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