Detection accuracy of proximal caries by phosphor plate and cone-beam computerized tomography images scanned with different resolutions
| Autor: | Gang Li, Xiao-Yan Wang, Zu-yan Zhang, Jun-ge Cheng, Xu-chen Ma, Zhi-ling Zhang |
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| Rok vydání: | 2011 |
| Předmět: |
medicine.medical_specialty
Computer science Radiography Image processing Dental Caries Tooth Cervix Digital image stomatognathic system Image Processing Computer-Assisted High spatial resolution medicine Humans X-Ray Intensifying Screens Dental Enamel Tooth Demineralization General Dentistry Reference standards Image resolution Dental Pulp Observer Variation Tooth Crown Receiver operating characteristic business.industry Radiography Dental Digital Cone-Beam Computed Tomography Reference Standards respiratory system equipment and supplies Radiographic Image Enhancement ROC Curve Area Under Curve Dentin Tooth Discoloration Radiology Tomography business Software Biomedical engineering |
| Zdroj: | Clinical Oral Investigations. 16:1015-1021 |
| ISSN: | 1436-3771 1432-6981 |
| DOI: | 10.1007/s00784-011-0599-7 |
| Popis: | This study was carried out to assess whether the spatial resolution has an impact on the detection accuracy of proximal caries in flat panel CBCT (cone beam computerized tomography) images and if the detection accuracy can be improved by flat panel CBCT images scanned with high spatial resolution when compared to digital intraoral images. The CBCT test images of 45 non-restored human permanent teeth were respectively scanned with the ProMax 3D and the DCT Pro scanners at different resolutions. Digital images were obtained with a phosphor plate imaging system Digora Optime. Eight observers evaluated all the test images for carious lesion within the 90 proximal surfaces. With the histological examination serving as the reference standard, observer performances were evaluated by receiver operating characteristic (ROC) curves. The areas under the ROC curves were analyzed with two-way analysis of variance. No significant differences were found among the CBCT images and between CBCT and digital images when only proximal enamel caries was detected (p = 0.989). With respect to the detection of proximal dentinal caries, significant difference was found between CBCT and digital images (p < 0.001) but not among CBCT images. The spatial resolution did not have an impact on the detection accuracy of proximal caries in flat panel CBCT images. The flat panel CBCT images scanned with high spatial resolution did not improve the detection accuracy of proximal enamel caries compared to digital intraoral images. CBCT images scanned with high spatial resolutions could not be used for proximal caries detection. |
| Databáze: | OpenAIRE |
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