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:: Volume 26, Issue 3 (7-2014) ::
J Iran Dent Assoc 2014, 26(3): 177-183 Back to browse issues page
Diagnostic Accuracy of Digital Phosphor Plates Using Pseudo-Color Enhancement for Detection of Horizontal Root Fractures in Single-Rooted Teeth
Sandra Mehralizadeh1 , Sahar Mohammadi * 2, Ahmadreza Talaeepour3 , Peaiman Mehrvarzfar4 , Maryam Mirzaee5
1- Assistant Professor, Department of Oral & Maxillofacial Radiology, School of Dentistry, Islamic Azad University. Tehran, Iran
2- Department of Oral & Maxillofacial Radiologist, School of Dentistry, shaheed beheshty University of Medical Sciences, Tehran, Iran , drsaharmohammadi88@gmail.com
3- Professor, Department of Oral & Maxillofacial Radiology, School of Dentistry, Islamic Azad University. Tehran, Iran
4- Associate Professor, Department of Endodontics, School of Dentistry, Islamic Azad University. Tehran, Iran
5- Oral & Maxillofacial Radiologist
Abstract:   (9612 Views)

  Background and Aim : If root fractures remain undetected, pulp necrosis will occur in 25% of cases leading to eventual tooth loss. The purpose of this study was to evaluate the diagnostic accuracy of digital phosphor plates using pseudo-color enhancement for detection of horizontal root fractures in single-rooted teeth .

  Materials and Methods : Eighty-two human single-rooted teeth were evaluated (41 with no horizontal fracture and 41 with horizontal fractures). Digital intraoral imaging plate system.

  (Digora® Optime PSP System, Soredex) was used to obtain 16-bit gray scale images. Five 16-bit images were obtained from each specimen and saved (one original and four with pseudo-color enhancement). Four observers evaluated the images twice with a 2-week interval. Accuracy, positive predictive value (PPV), negative predictive value (NPV), specificity and sensitivity for each observer and each image group were calculated .

  Results : The diagnostic sensitivities were not significantly different among the five images (p absolute=0.125 , p complete=0.170). But, statistically significant differences were found in the diagnostic specificity (p absolute=0.019, p complete=0.016) among the five views. Cool and Summer views had higher diagnostic specificity than Bone, Copper and Original views (p=0.025). Kappa and Weighted Kappa values showed statistically significant differences for intra- and inter-observer reliability in the five views (p=0.032).

  Conclusion : Both Cool and Summer views were suitable for detection of horizontal root fractures and had statistically significant differences with the original view . 

Keywords: Dental digital radiography, Image enhancement, Tooth fracture detection
Full-Text [PDF 191 kb]   (2258 Downloads)    
Type of Study: Original | Subject: Oral and Maxillofacial Radiology
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Mehralizadeh S, Mohammadi S, Talaeepour A, Mehrvarzfar P, Mirzaee M. Diagnostic Accuracy of Digital Phosphor Plates Using Pseudo-Color Enhancement for Detection of Horizontal Root Fractures in Single-Rooted Teeth. J Iran Dent Assoc 2014; 26 (3) :177-183
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Volume 26, Issue 3 (7-2014) Back to browse issues page
Journal of Iranian Dental Association

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