Detection of Horizontal Root Fracture with Small-volume Cone-Beam Computed Tomography in the Presence and Absence of Intracanal Metallic Post
| Autor: | Felipe Ferreira Costa, Bruno Felipe Gaia, Otavio Shoiti Umetsubo, Marcelo Gusmão Paraiso Cavalcanti |
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| Rok vydání: | 2011 |
| Předmět: |
Cone beam computed tomography
Materials science Radiography Computed tomography Radiation Dosage computer.software_genre Sensitivity and Specificity Tooth Fractures Voxel Radiography Dental medicine Humans Bicuspid Tooth Root General Dentistry Observer Variation Tooth Nonvital medicine.diagnostic_test Small volume business.industry Cone-Beam Computed Tomography Radiology Information Systems Metals Fracture (geology) Radiology information systems business Observer variation Nuclear medicine computer Post and Core Technique |
| Zdroj: | Journal of Endodontics. 37:1456-1459 |
| ISSN: | 0099-2399 |
| Popis: | Introduction The aim of the present study was to test the accuracy of small-volume cone-beam computed tomography (CBCT) scanning in the detection of horizontal root fractures and to assess the influence of a metallic post. Methods Forty teeth were divided into four groups based on the presence of metallic posts and horizontal root fracture. The teeth were examined by small-volume CBCT scanning at 0.2-mm voxel resolution. Three observers analyzed the samples for the presence of a horizontal root fracture. Sensitivity and specificity were calculated. Results High values for accuracy (73%–88%) were obtained in the groups without a metallic post, and statistically significant differences were found when the group with a metallic post has been observed (55%–70%). Intraobserver agreement also showed statistically significant differences in the groups with a metallic post. Conclusions Small-volume CBCT scanning showed high accuracy in detecting horizontal root fracture without a metallic post. However, the presence of a metallic post significantly reduced the specificity and sensitivity of this examination. |
| Databáze: | OpenAIRE |
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