Perceived oral health: changes over 5 years in one Swedish age-cohort.

OBJECTIVES: The purpose of this study was to investigate if a change in the social gradients in perceived oral health occurred over a 5-year period, 1992-97, using a cohort population from two Swedish counties. METHODS: In 1992, a cross-sectional mail questionnaire was sent to all 50-year-old persons in two counties in Sweden, Orebro and Ostergötland, and altogether there were 8888 persons. In 1997, the same population was sent a new questionnaire. The cohort, comprising the same respondents from 1992 and 1997, was of 5363 persons. An index of perceived oral health was constructed out of three questionnaire variables: satisfaction with teeth, chewing ability and the number of remaining teeth. This index value was set as a dependent variable in a regression model. Reports of toothache were investigated in a separate logistic regression model. RESULTS: There were obvious social gradients in the perceived oral health index both in 1992 and in 1997. Marital status, foreign birth, education and occupation were all substantially related to the perceived oral health. The change in perceived oral health was analyzed. Almost half of the cohort (47.4%) showed no change at all. Those with increased and those with decreased health were rather evenly distributed on both sides, with 22.0% with better health in 1997 and 30.6% with worse health. Gender and education were related to toothache experience. CONCLUSION: Changes have been moderate in the perceived oral health in this cohort, despite the rather drastic changes in the remuneration of dental care during this study time. On the other hand, this also means that the social differences remain, despite the official goals of increased equity.