Near-IR transillumination and reflectance imaging at 1,300 nm and 1,500-1,700 nm for in vivo caries detection.
Lasers Surg Med
; 48(9): 828-836, 2016 11.
Article
en En
| MEDLINE
| ID: mdl-27389018
ABSTRACT
INTRODUCTION:
Several studies suggest that near-IR imaging methods at wavelengths longer than 1,300 nm have great potential for caries detection. In this study, the diagnostic performance of both near-IR transillumination and near-IR reflectance was assessed on teeth scheduled for extraction due to orthodontic treatment (n = 109 teeth on 40 test subjects).METHODS:
Three intra-oral near-IR imaging probes were fabricated for the acquisition of in vivo images using a high definition InGaAs camera and near-IR broadband light sources. Two transillumination probes provided occlusal and approximal images using 1,300 nm light which manifests the highest transparency in enamel. A third reflectance probe utilized cross-polarization and operated at wavelengths greater than 1,500 nm where water absorption is higher which reduces the reflectivity of sound tissues, significantly increasing lesion contrast. Teeth were collected after extraction and sectioned and examined with polarized light microscopy and microradiography which served as the gold standard. In addition, radiographs were taken of the teeth and the diagnostic performance of near-IR imaging was compared with radiography.RESULTS:
Near-IR imaging was significantly more sensitive (P < 0.05) than radiography for the detection of lesions on both occlusal and proximal surfaces.CONCLUSION:
Near-IR imaging methods are ideally suited for screening all tooth surfaces for carious lesions. Lasers Surg. Med. 48828-836, 2016. © 2016 Wiley Periodicals, Inc.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Transiluminación
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Espectroscopía Infrarroja Corta
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Caries Dental
Tipo de estudio:
Diagnostic_studies
Límite:
Adolescent
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Adult
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Child
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Lasers Surg Med
Año:
2016
Tipo del documento:
Article