Detection of periimplant fenestration and dehiscence with the use of two scan modes and the smallest voxel sizes of a cone-beam computed tomography device.

Sergio Lins de-Azevedo-Vaz, Karla de Faria Vasconcelos, Frederico Sampaio Neves, Saulo Leonardo Sousa Melo, Paulo Sérgio Flores Campos, Francisco Haiter-Neto

Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil. sergiolinsv@gmail.com

Oral surgery, oral medicine, oral pathology and oral radiology 2013 Jan

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To assess the accuracy of cone-beam computed tomography (CBCT) in periimplant fenestration and dehiscence detection, and to determine the effects of 2 voxel sizes and scan modes. One hundred titanium implants were placed in bovine ribs in which periimplant fenestration and dehiscence were simulated. CBCT images were acquired with the use of 3 protocols of the i-CAT NG unit: A) 0.2 mm voxel size half-scan (180°); B) 0.2 mm voxel size full-scan (360°); and C) 0.12 mm voxel size full scan (360°). Receiver operating characteristic curves and diagnostic values were obtained. The Az values were compared with the use of analysis of variance. The Az value for dehiscence in protocol A was significantly lower than those of B or C (P < .01). They did not statistically differ for fenestration (P > .05). Protocol B yielded the highest values. The voxel sizes did not affect fenestration and dehiscence detection, and for dehiscence full-scan performed better than half-scan. Copyright © 2013 Elsevier Inc. All rights reserved.

Citation

Sergio Lins de-Azevedo-Vaz, Karla de Faria Vasconcelos, Frederico Sampaio Neves, Saulo Leonardo Sousa Melo, Paulo Sérgio Flores Campos, Francisco Haiter-Neto. Detection of periimplant fenestration and dehiscence with the use of two scan modes and the smallest voxel sizes of a cone-beam computed tomography device. Oral surgery, oral medicine, oral pathology and oral radiology. 2013 Jan;115(1):121-7