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- Hänsel Petersson, Gunnel, et al.
(författare)
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Caries risk assessment in schoolchildren using a reduced Cariogram model
- 2010
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Ingår i: BMC oral health. - 1472-6831. ; 10
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: To investigate the caries predictive ability of a reduced Cariogram model without salivary tests in schoolchildren. METHODS: The study group consisted of 392 school children, 10-11 years of age, who volunteered after informed consent. A caries risk assessment was made at baseline with aid of the computer-based Cariogram model and expressed as "the chance of avoiding caries" and the children were divided into five risk groups. The caries increment (DeltaDMFS) was extracted from the dental records and bitewing radiographs after 2 years. The reduced Cariogram was processed by omitting the variables "salivary mutans streptococci", "secretion rate" and "buffer capacity" one by one and finally all three. Differences between the total and reduced models were expressed as area under the ROC-curve. RESULTS: The baseline caries prevalence in the study population was 40% (mean DMFS 0.87 +/- 1.35) and the mean 2-year caries increment was 0.51 +/- 1.06. Both Cariogram models displayed a statistically relationship with caries development (p < 0.05); more caries was found among those assessed with high risk compared to those with low risk. The combined sensitivity and specificity decreased after exclusion of the salivary tests and a statistically significant reduction of the area under the ROC-curve was displayed compared with the total Cariogram (p < 0.05). Among the salivary variables, omission of the mutans streptococci enumeration impaired the predictive ability the most. CONCLUSIONS: The accuracy of caries prediction in school children was significantly impaired when the Cariogram model was applied without enumeration of salivary tests.
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- Strömberg, Ulf, et al.
(författare)
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Geo-mapping of time trends in childhood caries risk - a method for assessment of preventive care
- 2012
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Ingår i: BMC Oral Health. - BioMed Central. - 1472-6831. ; 12, s. 9
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Tidskriftsartikel (refereegranskat)abstract
- Background: Dental caries is unevenly distributed within populations with a higher burden in low socio-economy groups. Several attempts have been made to allocate resources to those that need them the most; there is a need for convenient approaches to population-based monitoring of caries risk over time. The aim of this study was to develop the geo-map concept, addressing time trends in caries risk, and demonstrate the novel approach by analyzing epidemiological data from preschool residents in the region of Halland, Sweden. Methods: The study population consisted of 9,973 (2006) and 10,927 (2010) children between 3 to 6 years of age (similar to 77% of the eligible population) from whom caries data were obtained. Reported dmfs >0 for a child was considered as the primary caries outcome. Each study individual was geo-coded with respect to his/her residence parish (66 parishes in the region). Smoothed caries risk geo-maps, along with corresponding statistical certainty geo-maps, were produced by using the free software Rapid Inquiry Facility and the ESRI (R) ArcGIS system. Parish-level socioeconomic data were available. Results: The overall proportion of caries-free (dmfs = 0) children improved from 84.0% in 2006 to 88.6% in 2010. The ratio of maximum and minimum (parish-level) smoothed relative risks (SmRRs) increased from 1.76/0.44 = 4.0 in 2006 to 2.37/0.33 = 7.2 in 2010, which indicated an increased geographical polarization of early childhood caries in the population. Eight parishes showed evidential, positional changes in caries risk between 2006 and 2010; their corresponding SmRRs and statistical certainty ranks changed markedly. No considerable parallel changes in parish-level socioeconomic characteristics were seen during the same time period. Conclusion: Geo-maps based on caries risk can be used to monitor changes in caries risk over time. Thus, geo-mapping offers a convenient tool for evaluating the effectiveness of tailored health promotion and preventive care in child populations.
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