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Paper Information

Journal:   JOURNAL OF DENTAL MEDICINE   SUMMER 2014 , Volume 26 , Number 2; Page(s) 124 To 130.
 
Paper: 

DIAGNOSTIC ACCURACY OF DIGITAL PHOSPHOR PLATES USING PSEUDO-COLOR ENHANCEMENT FOR DETECTION OF HORIZONTAL ROOT FRACTURES IN SINGLE-ROOTED TEETH

 
 
Author(s):  MEHRALIZADEH S., MOHAMMADI S.*, TALAEIPOUR A.R., MEHRVARZFAR P., MIRZAEE M.
 
* 
 
Abstract: 

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
Ò 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.

 
Keyword(s): DENTAL DIGITAL RADIOGRAPHY, IMAGE ENHANCEMENT, TOOTH FRACTURE DETECTION
 
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