The influence of different scan resolutions on the detection of proximal caries lesions
Ferreira Liana Matos, Queiroz Polyane Mazucatto, Santaella Gustavo Machado, Wenzel Ann, Groppo Francisco Carlos, Haiter-Neto Francisco,
소속 상세정보
( Ferreira Liana Matos ) - University of Campinas Piracicaba Dental School Department of Oral Diagnosis
( Queiroz Polyane Mazucatto ) - University of Campinas Piracicaba Dental School Department of Oral Diagnosis
( Santaella Gustavo Machado ) - University of Campinas Piracicaba Dental School Department of Oral Diagnosis
( Wenzel Ann ) - University of Aarhus Department of Dentistry and Oral Health
( Groppo Francisco Carlos ) - University of Campinas Piracicaba Dental School Department of Physiological Sciences
( Haiter-Neto Francisco ) - University of Campinas Piracicaba Dental School Department of Oral Diagnosis
Abstract
Purpose: This study was conducted to evaluate the effect of different spatial resolutions of a photostimulable phosphor plate (PSP) radiography system on the detection of proximal caries lesions.
Materials and Methods: Forty-five extracted human permanent teeth were radiographed using a PSP system (VistaScan Perio Plus) and scanned at the 4 resolutions (10 lp/mm, 20 lp/mm, 25 lp/mm, and 40 lp/mm) available in the system. Three independent examiners scored the images for the presence and absence of proximal caries lesions using a 5-point scale. The presence or absence of caries was confirmed by histological sections of the examined teeth (defined as the gold standard). Intra- and inter-observer reproducibility was calculated by the weighted kappa test. One-way analysis of variance with the post hoc Tukey test was used to compare the area under the receiver operating characteristic curve for the classifications made with each resolution.
Results: For the detection of enamel lesions, the spatial resolution of 10 lp/mm was significantly superior to the other resolutions. However, the spatial resolution did not affect the detection of caries lesions in dentin (P>0.05).
Conclusion: Spatial resolution may influence the accuracy of the detection of incipient caries lesions in radiographs with PSP plates. Images with low spatial resolution seem to be more appropriate for this purpose.
키워드
Radiography, X-Rays; Dental Caries; Diagnostic Imaging
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