Quantitative diagnosis of small approximal caries lesions utilizing wavelength-dependent fiber-optic transillumination
| Autor: | Emiel H. Verdonschot, J. Vaarkamp, J.J. ten Bosch, S. Tranaeus |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
0301 basic medicine
Optical fiber Dentistry Transillumination Light scattering quantitative) law.invention TEETH 0302 clinical medicine law Premolar Fiber Optic Technology Scattering Radiation GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) Tooth Demineralization Optical Fibers IN-VIVO caries (approximal) Enamel paint Approximal caries diagnosis by optical quantification INDEPENDENT MICRORADIOGRAPHY Wavelength medicine.anatomical_structure MINERAL LOSS visual_art visual_art.visual_art_medium ENAMEL medicine.symptom diagnosis (optical Materials science Correlation coefficient Dental Caries Sensitivity and Specificity Lesion 03 medical and health sciences REGRESSION medicine Dental Caries Activity Tests Humans VALIDITY General Dentistry diagnosis (optical quantitative) business.industry SURFACES Reproducibility of Results 030206 dentistry QUANTIFICATION Diagnostiek van approximale caries door optische kwantificering 030104 developmental biology business Biomedical engineering |
| Zdroj: | Journal of Dental Research, 76, 4, pp. 875-882 Journal of Dental Research, 76, 875-882 Journal of Dental Research, 76, pp. 875-882 Journal of Dental Research, 76(4), 875-882. SAGE Publications Inc. |
| ISSN: | 0022-0345 |
| Popis: | The instruments clinically available for the diagnosis of approximal caries lesions are inadequate to detect lesions early and quantitatively. The aim of this study was to investigate whether wavelength-dependent light scattering and absorption of carious tissues may be utilized for the quantitative diagnosis of these small approximal caries lesions. Seventeen extracted premolar teeth were transilluminated at an approximal surface with a glass fiber, which transported the light from a halogen light bulb. Seven approximal surfaces contained a naturally developed small white-spot lesion, and 5 surfaces a small discolored lesion. Five teeth were sound. The occlusal surface was imaged with a CCD camera. Light in the blue and red portions of the electromagnetic spectrum was selected by means of Schott glass filters. From the obtained images, average effective decadic optical thickness differences were determined. These were plotted as a function of average mineral loss assessed by means of wavelength-independent microradiography. The correlation coefficient between the average effective decadic optical thickness difference and average mineral loss was (r) over cap = 0.79 (95% CI: 0.47...0.93). Different sources of variation that influence the observed correlation were defined and quantified. From these measurements, the correlation coefficient between average effective decadic optical thickness difference and 'true' average mineral loss was estimated to be (r) over cap = 0.92 (95% CI: 0.77...0.97). The results indicate that early and, in principle, also quantitative diagnosis of approximal caries lesions is feasible when wavelength-dependent light propagation through carious tissues is utilized. |
| Databáze: | OpenAIRE |
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