Non-destructive clinical assessment of occlusal caries lesions using near-IR imaging methods.
Lasers Surg Med
; 43(10): 951-9, 2011 Dec.
Article
en En
| MEDLINE
| ID: mdl-22109697
ABSTRACT
OBJECTIVE:
Enamel is highly transparent in the near-IR (NIR) at wavelengths near 1,300 nm, and stains are not visible. The purpose of this study was to use NIR transillumination and optical coherence tomography (OCT) to estimate the severity of caries lesions on occlusal surfaces both in vivo and on extracted teeth.METHODS:
Extracted molars with suspected occlusal lesions were examined with OCT and polarization sensitive OCT (PS-OCT), and subsequently sectioned and examined with polarized light microscopy (PLM) and transverse microradiography (TMR). Teeth in test subjects with occlusal caries lesions that were not cavitated or visible on radiographs were examined using NIR transillumination at 1,310 nm using a custom built probe attached to an indium gallium arsenide (InGaAs) camera and a linear OCT scanner. After imaging, cavities were prepared using dye staining to guide caries removal and physical impressions of the cavities were taken.RESULTS:
The lesion severity determined from OCT and PS-OCT scans in vitro correlated with the depth determined using PLM and TMR. Occlusal caries lesions appeared in NIR images with high contrast in vivo. OCT scans showed that most of the lesions penetrated to dentin and spread laterally below the sound enamel.CONCLUSION:
This study demonstrates that both NIR transillumination and OCT are promising new methods for the clinical diagnosis of occlusal caries.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Espectroscopía Infrarroja Corta
/
Caries Dental
/
Tomografía de Coherencia Óptica
Tipo de estudio:
Evaluation_studies
Límite:
Humans
Idioma:
En
Revista:
Lasers Surg Med
Año:
2011
Tipo del documento:
Article
País de afiliación:
Estados Unidos