DIFOTIDigital Imaging Fiber-Optic Trans-Illumination (Irvington, NY)
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Assessment of dental caries with digital imaging fiber-optic transillumination (DIFOTI): in vitro study.
This study was conducted to determine sensitivity and specificity of detecting the presence and extent of interproximal carious lesions using both traditional examination techniques (bitewing radiographs) and DIFOTI on 32 extracted maxillary and mandibular teeth.
During Phase 1, the visible surfaces of each tooth were cleaned with prophy paste and a rubber cup as recommended prior to use of the DIFOTI system.
After completion of DIFOTI imaging, each block of teeth was radiographed.
Prior to participating in Phase 2, each dentist received approximately 2 hours of hands-on familiarization with the DIFOTI equipment.
As illustrated in the Table, sensitivity ranged from 0.09-0.55 for radiographs and from 0-0.45 for DIFOTI for all examiners.
A comparison of the consensus results for all examiners determined that the sensitivity for DIFOTI was 0.18.
Experimental use of DIFOTI as a diagnostic tool also resulted in a specificity value of 1.0.
Correlation and regression analysis revealed that the diagnosis of positive caries increased as the depth of the caries increased for both consensus X (radiographs) and consensus D (DIFOTI).
DIFOTI has shown promise in the detection of interproximal, occlusal, and smooth surface carious lesions.