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Detection of Horizontal Root Fracture with Small-volume Cone-Beam Computed Tomography in the Presence and Absence of Intracanal Metallic Post

2011; Elsevier BV; Volume: 37; Issue: 10 Linguagem: Inglês

10.1016/j.joen.2011.05.040

1878-3554

Felipe Ferreira Costa, Bruno Felipe Gaia, Otávio Shoiti Umetsubo, Marcelo Gusmão Paraíso Cavalcanti,

Radiation Dose and Imaging

Abstract 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.