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Prevalence and Need for Replacement of Amalgam and Composite Restorations in Dutch Adults

Department of Cariology and Endodontology, Research Program in Dental Health Care and Epidemiology, TRIKON: Institute for Dental Clinical Research, University of Nijmegen, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands

A.J.M. Plasschaert

Department of Cariology and Endodontology, Research Program in Dental Health Care and Epidemiology, TRIKON: Institute for Dental Clinical Research, University of Nijmegen, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands

M.A. van 't Hof

Department of Medical Statistics, Research Program in Dental Health Care and Epidemiology, TRIKON: Institute for Dental Clinical Research, University of Nijmegen, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands

G.J. Truin

Department of Cariology and Endodontology, Research Program in Dental Health Care and Epidemiology, TRIKON: Institute for Dental Clinical Research, University of Nijmegen, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands

In 1986, the'first nationwide epidemiological survey of adult oral health and attitudes to oral health care was carried out in The Netherlands. One of the aims of this study was to evaluate the prevalence and the quality (in terms of need for replacement) of amalgam and composite restorations in the Dutch adult population.

A group of 600 dentate individuals, 20-44 years of age, was examined. Stratified cluster sampling included as factors age, gender, socio-economic status, and area of residence. Two additional parameters were studied: frequency of visiting a dentist and type of health insurance. Oral examinations consisted of direct (mirror and explorer) and indirect (color slides and bite-wing radiographs) observations with use of well-defined criteria.

On average, 13.4 restorations per individual were present, of which 23.3% were classified as unsatisfactory. A great difference in prevalence and quality data was found among several types of restorations. Test results (ANOVA) for effects of age, gender, socio-economic status, area of residence, frequency of visiting a dentist, and insurance on the prevalence of (un)satisfactory restorations resulted nearly always in significant effects of only age and frequency of visits to a dentist. There was a tendency (p<0.05) for the prevalence of (un)satisfactory restorations to be higher with increasing age. For individuals visiting a dentist infrequently (once or not at all in the past two years), the prevalence of restorations was lower, and the percentage of unsatisfactory restorations was higher, in comparison with individuals visiting a dentist frequently. The two major reasons for the scoring of restorations as clinically unacceptable were approximal ledges (43%) in class II restorations and marginal (secondary) caries (57%) in all other types of restorations.

Journal of Dental Research, Vol. 69, No. 6, 1270-1274 (1990)
DOI: 10.1177/00220345900690060901


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