Inequalities in dental caries experience among 6-year-old German children after the caries decline

Abstract

Objective. As in many other countries, caries decline in Germany has left pockets of persisting caries prevalence. This study aims to assess the benefit of a 10-year community-based prophylaxis program, focused on regular toothbrushing with fluoridated toothpastes or gels and involving institutions noted as having the highest caries levels. Materials and methods. The caries data (d₃mft/D₃MFT) was extracted from the results of the compulsory school entry examinations in Greifswald/Germany (2003/2004–2012/2013) involving ∼ 280 6–7-year-olds each year. Data from schools that include children with the highest caries levels and coming from low-SES families were analyzed independently and used for comparisons. Additionally, caries trends from Greifswald were compared to data from representative national surveys (2004–2009). Results. Data from 2871 children were available for analysis. The baseline d₃mft value (2003/2004) was 3.2 ± 3.8; the d₃-component corresponded to 70% of the index. The latest caries data (2012/2013) showed a strong reduction (43.8%) in caries prevalence (d₃mft = 1.8 ± 2.5). Similarly, the SiC-Index declined significantly from 2003/2004 (7.9 ± 2.3) to 2012/2013 (4.8 ± 2.3; p < 0.001). Nevertheless, in all analyzed years the d₃mft values and the SiC-Index were significantly higher in the institutions that included children coming from lower-SES families (p < 0.05). The amount of caries reduction between 2004 and 2009 corresponded to 38% in Greifswald as compared to 13% in Germany. Conclusions. This strategy involving a combination of regular toothbrushing and fluoride application has achieved an overall substantial caries reduction, thereby indicating that caries-control strategies for heterogeneous risk groups can be highly successful as setting approach. However, activities targeting high risk groups still need to be strengthened.

Key Words:

• caries decline
• caries prevalence
• dmft
• significant caries index

Acknowledgments

This study has been supported by the Paediatric Dentistry Department of Greifswald University in close co-operation with the Community Dentistry Program in Greifswald.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.