Objective: To assess the efficacy of a photography-aided behavioural intervention in reducing risk factors for dental caries and malocclusion in high-risk infants. Materials and methods:In this randomized trial conducted in a maternity hospital, 55 mothers of recently born infants at high risk of developing oral diseases were allocated to either the intervention (n = 28) or usual care (n = 27). The intervention arm received the same usual care plus an enhanced, behaviour-oriented, photography-aided, twostage (0 and +6 months) educational programme addressing nutritional, behavioural, lifestyle and familial factors that affect child's oral health. The primary outcome was the proportion of children classified as being at a 'low risk' of developing dental caries at the age of 12 months using a modified score based on the Caries-risk Assessment Form of the American Academy of Pediatric Dentistry. Secondary outcomes included risk factors for malocclusion, such as duration of exclusive breastfeeding, pacifier use and bottle-feeding and/or sippy cup usage.Results: At 12 months, the proportion of children considered at low risk for dental caries was significantly higher in the intervention group compared to usual care (71% vs 15%, respectively, relative risk = 4.82, 95% confidence interval = 1.89-12.3, p < 0.001). The median duration of exclusive breastfeeding in the intervention group was 1.7 times higher than in the control arm (5 months vs 3 months, p = 0.03). Conclusion:Altogether, our findings provide evidence that a low-cost, two-stage preventive strategy using photographs to deliver a stronger visual impact might significantly reduce the incidence of risk factors for dental caries and malocclusion in 12-month-old children.
Objectives : The aim of this study was to compare the accuracy of vertical root fracture (VRF) detection using three tomography devices and two software systems in teeth with different endodontic fillings. Methods : The sample consisted of 45 premolars divided into 3 groups: No filling (NF, n=15); Gutta percha (GP, n=15) and Metallic Post (MP, n=15). Cone-beam computed tomography (CBCT) images were acquired in Kodak 9000 3D, Orthopantomography 300 (OP300) and PreXion 3D devices, before and after induced root fractures. Two oral radiologists analyzed all images using InVivoDental and e-Vol DX software systems. The analysis was repeated after 15 days in 30% of the sample. Data analysis compared receiver operating characteristic (ROC) curves, as well the areas under the ROC curves. Accuracy, sensitivity, specificity, positive and negative predictive value were calculated according to each tomographic device and software. Intra- and interexaminer reliability were tested using the Kappa coefficient. Results: The highest accuracy was seen in the image set from the PreXion 3D, using InVivo (0.96) or e-Vol DX (0.92) in image analysis. The OP300 device presented a similar performance of the PreXion 3D in teeth with different endodontic fillings. When using e-Vol DX, the accuracy of Kodak 9000 3D improved from 0.62 to 0.74. Conclusions: The PreXion 3D device is the most accurate when detecting VRF, with a performance similar to the OP300 in endodontic filled teeth. Kodak 9000 3D is indicated for teeth without fillings, with better accuracy using e-Vol DX software.
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