Reliability and accuracy of assessing temporary anchorage device-tooth root contact with cone-beam computed tomography
Autor: | Toru Deguchi, Soorya Srinivasan, Zongyang Sun, Do-Gyoon Kim, Boon Ching Tee, Amy Wang, Anita Gohel |
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Rok vydání: | 2019 |
Předmět: |
Orthodontics
Cone beam computed tomography X-ray microtomography business.industry Swine Soft tissue Reproducibility of Results 030206 dentistry X-Ray Microtomography Cone-Beam Computed Tomography Molar 03 medical and health sciences Inter-rater reliability 0302 clinical medicine McNemar's test Cohen's kappa Medicine Animals Medical diagnosis Tooth Root business 030217 neurology & neurosurgery Dental alveolus |
Zdroj: | American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 159(3) |
ISSN: | 1097-6752 |
Popis: | This study was aimed at investigating the reliability and accuracy of cone-beam computed tomography (CBCT) diagnosis of contact between a temporary anchorage device (TAD) and tooth root and assessing any effect produced by metal brackets, imaging software program, and image segmentation or color enhancement tools.Eighteen fresh pig mandibles were used. TADs (Vector, 1.4 × 8 mm) were placed at the buccal intermolar alveolar bone on both sides of the mandibles. With soft tissue kept intact, each mandible underwent CBCT scans (voxel size, 400 μm) before and after placing TADs, and after placing metal brackets on involved molars. Alveolar bone specimens containing the TADs were then exposed to microcomputed tomography (microCT) scans (voxel size, 27 μm) after TAD removal. Two independent raters, blinded of image identity, diagnosed TAD-root contact using ImageJ (National Institutes of Health and the Laboratory for Optical and Computational Instrumentation, University of Wisconsin, Madison, Wis) for microCT; Dolphin (Dolphin Imaging and Management Solutions, Chatsworth, Calif) and Anatomage software programs (Anatomage, Santa Clara, Calif) for CBCT images. Intrarater and interrater reliability and diagnostic accuracy were statistically assessed using Cohen kappa and McNemar tests.Intrarater and interrater reliability of TAD-root contact diagnoses were perfect for microCT diagnoses (κ = 1), generally moderate to good (κ 0.5) for CBCT diagnoses except for the use of color enhancement tools (κ 0.25). For diagnostic accuracy, there was generally a low agreement (κ 0.45) between CBCT and microCT (gold standard). The percent accuracy ranged from 68.1% to 79.2% and was not different among raters, bracket presence/absence, or software choices (chi-square tests, P 0.05). Overall, diagnostic sensitivity was above 80%, whereas specificity was below 55%.Despite good reliability, diagnoses of TAD-root contact using 400 μm voxel size CBCT imaging tend to be inaccurate, with a likelihood of high false-positive diagnoses. |
Databáze: | OpenAIRE |
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