Digital radiographic measurement of approximal caries progression in fluoridated and non-fluoridated areas of Rio de Janeiro, Brazil
| Autor: | Douglas K. Benn, Herenia Procopio Lawrence, Aubrey Sheiham |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Male
Time Factors Scoring system Adolescent Intraclass correlation Radiography Dentistry Dental Caries Lesion progression Fluorides Water Supply Fluoridation Image Processing Computer-Assisted Dentin medicine Humans Bicuspid Child Dental Enamel Radiography Bitewing General Dentistry Observer Variation Orthodontics Enamel paint DMF Index business.industry Public Health Environmental and Occupational Health Reproducibility of Results Radiography Dental Digital Lesion depth Molar Cariostatic Agents medicine.anatomical_structure visual_art Disease Progression visual_art.visual_art_medium Posterior teeth Female business Brazil |
| Zdroj: | Community Dentistry and Oral Epidemiology. 25:412-418 |
| ISSN: | 1600-0528 0301-5661 |
| Popis: | The effect of fluoridation on approximal caries progression was investigated using serial digitized bitewing images and conventional film images of 290 12-16-year-old schoolchildren who were lifetime residents of either Rio de Janeiro (a fluoridated area) or Mangaratiba and Angra dos Reis (non-fluoridated areas) in the state of Rio de Janeiro, Brazil. One examiner scored a maximum of 28 approximal surfaces of posterior teeth per subject using both methods. The intraexaminer reliability for rating lesion depth with digital images was comparable with that of the conventional bitewing films (namely, intraclass correlation of 0.99 and weighted Kappa scores of 0.82, respectively). Approximal surface D1S was 3.17 +/- 0.25 (sx) in fluoridated areas and 6.64 +/- 0.44 in non-fluoridated areas. After 1 year, the rate of caries progression in approximal surfaces was significantly lower in the fluoridated areas (0.54 +/- 0.14) as compared with the non-fluoridated areas (1.41 +/- 0.20) using Pitts' scoring system for conventional bitewing radiographs (P < 0.001). Similarly, the digital radiographic method was able to detect subtle differences in approximal caries progression in the enamel and the dentin (overall mean: 0.34 mm/year in fluoridated areas vs 0.49 mm/year in non-fluoridated areas, P < 0.05). The two radiographic methods were strongly correlated (rs = 0.7). Assuming a constant rate over time, these results indicate that lesion progression from the outer half of the enamel into the outer half of the dentin takes approximately 3-4 years in schoolchildren from the fluoridated areas compared to 2 1/2 years in the non-fluoridated areas. |
| Databáze: | OpenAIRE |
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