Abstract:
INTRODUCTION:This in vitro study compared cone-beam computed tomography (CBCT) exam with different voxel sizes with digital periapical radiography in the detection of vertical root fractures in teeth with and without intracanal metallic posts. METHODS:Eighteen single-rooted human teeth were endodontically treated, prepared for cast metal posts, and artificially fractured. After positioning the teeth in dry mandibular sockets, the samples were subjected twice (with and without posts) to digital periapical radiography at 3 different angles and to CBCT examinations with 2 voxel sizes, 0.125 and 0.25 mm. The images were evaluated by 3 oral radiologists. Indices of sensitivity, specificity, and positive and negative predictive values, in addition to the areas under the receiver operating characteristic curves (accuracy), were calculated. Comparison of the accuracy of the imaging methods was assessed by using the χ(2) test. Comparison of the accuracy between teeth with and without posts was determined by using the Fisher exact test. RESULTS:The accuracy of the imaging methods showed no significant differences (P = .08). The comparison between teeth with and without posts in each examination revealed significant differences for CBCT with a voxel of 0.125 mm (P = .04) and for periapical radiography (P = .04). CONCLUSIONS:No significant differences were observed between CBCT and periapical radiography in the detection of vertical root fractures, except for teeth with metallic posts in images from CBCT with a voxel of 0.125 mm and in digital periapical radiography. Furthermore, voxel size did not significantly influence the diagnosis of vertical root fractures.
journal_name
J Endodjournal_title
Journal of endodonticsauthors
Junqueira RB,Verner FS,Campos CN,Devito KL,do Carmo AMdoi
10.1016/j.joen.2013.08.031subject
Has Abstractpub_date
2013-12-01 00:00:00pages
1620-4issue
12eissn
0099-2399issn
1878-3554pii
S0099-2399(13)00760-7journal_volume
39pub_type
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journal_title:Journal of endodontics
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章
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