Abstract
Background and aims. Early diagnosis of external root resorption is important for accurate treatment. The purpose of this study was to compare the efficacy of a charge-coupled device (CCD) sensor and a photostimulable phosphor (PSP) plate receptor in the diagnosis of artificial external root resorption.Materials and methods. In this diagnostic in-vitro study, 40 maxillary incisors were mounted in a segment of dry bone and preliminary radiographs were obtained using CCD and PSP sensors. Artificial resorption cavities were produced on the middle-third in half of the samples and on the cervical-third in the other half on the buccal root surfaces. Radiographs were repeated and images were evaluated. Data were statistically analyzed using chi-square and diagnostic tests.Results. There were no significant differences between the two sensors in the sensitivity (p=0.08 and 0.06) and specificity (p=0.13) for the diagnosis of resorption in both root areas. The overall accuracy of CCD was higher than PSP sensor; however, the difference was not statistically significance (p>0.05).Conclusion. CCD and PSP sensors chosen for the present study produced similar results in diagnosing simulated external root resorption.
Highlights
External root resorption results in dissolution of cementum, dentin and sometimes extends toward the pulp
The purpose of this study was to compare the efficacy of a charge-coupled device (CCD) sensor and a photostimulable phosphor (PSP) plate receptor in the diagnosis of artificial external root resorption
CCD and PSP sensors chosen for the present study produced similar results in diagnosing simulated external root resorption
Summary
External root resorption results in dissolution of cementum, dentin and sometimes extends toward the pulp. One of the most common regions for external root resorption is the cervical area of the root, it happens less probably in middle area too, and the highest incidence rate has been reported in anterior teeth.[1] Root resorption was first described by Bell in 1830.2 In most cases, no clinical symptoms are present and it is usually detected during routine radiography. When such lesions are found, they are at an advanced level and treatment is almost impossible.
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