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:: Volume 7, Issue 2 (September- 2018) ::
Caspian J Dent Res 2018, 7(2): 24-29 Back to browse issues page
A comparative evaluation of cone-beam computed tomography and multi-slice computed tomography in the diagnosis of sheep mandibular bone defect: an in vitro study
Ehsan Moudi * , Sina Haghanifar , Kaveh Kazemian , Ramin Foroughi , Mehrdad Nabahati , Ali Bijani
Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences,Babol,IR Iran. , e.moudi@mubabol.ac.ir
Abstract:   (190 Views)
Introduction: Diagnosis of lesions and bone defects is very important and there is a lack of substantial studies on the most appropriate method for bone defect measurement. Hence, the aim of this study is to evaluate the accuracy of multi-slice computed tomography (MSCT) and cone-beam computed tomography (CBCT) in the diagnosis of mandibular bone defects present in sheep.
Material & Methods: This in vitro study was performed on 15 sheep's mandibular bones. Some defects were created in cortical and spongy bone using high-speed hand piece at the buccal and lingual cortical bone of the lower jaw. Totally, 75 mandibular bone defects with a depth of 1-3 mm were created. The mandibular bone samples were scanned using MSCT and CBCT scanners, and these scans were evaluated by two oral and maxillofacial radiologists. The positive and negative predictive values, sensitivity and specificity were calculated for both methods.
Results: The sensitivity of MSCT and CBCT were 78% and 96.5% and  Specificitiey of MSCT and CBCT were 90% and 92% respectively. The positive and negative predictive values were 97.5% and 89.5 % for CBCT, and 90% and 92% for MSC respectively. The negative and positive likelihood ratios (LR-) and (LR+) were 0.035 and 13.04 for CBCT as well as 0.245 and 7.82 for MSC respectively.
Conclusion: The study results demonstrated a higher accuracy of CBCT, compared to MSCT, in the diagnosis of bone defects.
Keywords: Bone, Cone-beam computed tomography, Diagnosis, Mandible
Full-Text [PDF 1044 kb]   (17 Downloads)    
Type of Study: Original Article | Subject: Oral & Maxillofacial Radiology
* Corresponding Author Address: Faculty of Dentistry, Babol University of Medical Sciences, Babol,IR Iran.
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Moudi E, Haghanifar S, Kazemian K, Foroughi R, Nabahati M, Bijani A. A comparative evaluation of cone-beam computed tomography and multi-slice computed tomography in the diagnosis of sheep mandibular bone defect: an in vitro study . Caspian J Dent Res. 2018; 7 (2) :24-29
URL: http://cjdr.ir/article-1-227-en.html


Volume 7, Issue 2 (September- 2018) Back to browse issues page
مجله تحقیقات دندانپزشکی کاسپین Caspian Journal of Dental Research
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