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J Iran Dent Assoc 2014, 26(2): 82-89 Back to browse issues page
In-Vitro Comparison of the Diagnostic Accuracy of CBCT and Helical CT for Detection of Mandibular Condyle Erosions
Sanaz Sharifi Shooshtari1, Vida Maserat *2, Arash Dabbaghi1, Shahriar Shahab3, Heshmatollah Shahraki Ebrahimi4, Mahdi Pourmahdi5, Mohammad Davoodi6, Mohammad amin Kavoosi7
1- Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Ahvaz Jundi Shapur University of Medical Sciences. Ahvaz, Iran
2- Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Zahedan University of Medical Sciences. Zahedan, Iran , vidamaseratt@gmail.com
3- Assistant Professor, Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahed University. Tehran, Iran
4- Postgraduate Student, Department of Endodontic, School of Dentistry, Zahedan University of Medical Sciences. Zahedan, Iran
5- Assistant Professor, Department of Food Hygiene, School of Veterinary Medicine, Shahid Chamran University of Medical Sciences. Ahvaz, Iran
6- Assistant Professor, Department of Head of Radiology, School of Medicine, Ahvaz University of Medical Sciences. Ahvaz, Iran
7- Oral and Maxillofacial Radiologyst
Abstract:   (7072 Views)

  Background and Aim : Temporomandibular joint (TMJ) dysfunction is the most common jaw disorder. TMJ imaging may be necessary to supplement information obtained from the clinical examination. The purpose of this study was to compare the diagnostic accuracy of helical computed tomography (CT) and cone beam computed tomography (CBCT) for detection of simulated mandibular condyle erosions .

  Materials and Methods : In this in-vitro study, simulated lesions were created in 15 dry mandibles using a dental round bur. Using CBCT and helical CT techniques, mandibular condyles were radiographed before and after creating the lesions. The images were examined by two oral and maxillofacial radiologists for absence or presence of lesions. The accuracy for detecting mandibular condyle lesions was expressed as sensitivity, specificity, positive and negative predictive values. Differences between the two radiographic modalities were analyzed by McNemar’s test. Inter-observer agreement was determined using Kappa coefficient .

  Results : The maximum sensitivity, specificity and accuracy were 100%, 100% and 100% for CBCT images, respectively and 88%, 100% and 98% for helical CT images, respectively. No statistically significant difference was found between the accuracy of CBCT and helical CT for detection of mandibular condyle erosions (P = 1 ). 

  Conclusion : CBCT is a lower-dose cost-effective alternative to helical CT for diagnostic evaluation of erosion of the mandibular condyle .  

Keywords: Mandibular condyle, Helical computed tomography, Cone beam computed tomography
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Type of Study: Orginal | Subject: Oral and Maxillofacial Radiology
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Sharifi Shooshtari S, Maserat V, Dabbaghi A, Shahab S, Shahraki Ebrahimi H, Pourmahdi M, et al . In-Vitro Comparison of the Diagnostic Accuracy of CBCT and Helical CT for Detection of Mandibular Condyle Erosions. J Iran Dent Assoc. 2014; 26 (2) :82-89
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Volume 26, Issue 2 (4-2014) Back to browse issues page
Journal of Iranian Dental Association

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