Measurement accuracy and perceived quality of imaging systems for the evaluation of periodontal structures

Abstract

The aim of this study was to compare the subjective diagnostic quality of F-speed film images and original and enhanced storage phosphor plate (SPP) digital images for the visualization of periodontal ligament space (PLS) and periapical (PB) and alveolar crestal bone (CB) and to assess the accuracy of these image modalities for the measurement of alveolar bone levels. Standardized images of six dried mandibles were obtained with film and Digora SPPs. Six evaluators rated the visibility of anatomical structures using a three-point scale. Alveolar bone levels were measured from the coronal-most tip of the marginal bone to a reference point. Results were compared by using Friedman and Wilcoxon signed-ranks tests. The kappa (kappa) statistic was used to measure agreement among observers. The measurements were compared using repeated measures analysis of variance and Bonferroni tests (P = 0.05). A paired t test was used for comparison with true bone levels (P = 0.05). Enhanced SPP images were rated superior, followed by film and then the original SPP images, for the evaluation of anatomical structures. The value of kappa rose from fair to substantial after the enhancement of the SPP images. Film and enhanced SPP images provided alveolar bone lengths close to the true bone lengths. Enhancement of digital images provided better visibility and resulted in comparable accuracy to film images for the evaluation of periodontal structures.

Subjective image quality assessment of cross sectional imaging methods for the symphyseal region of the mandible prior to dental implant placement

“…These include application of a brightness and contrast algorithm, allowing observers to adjust brightness and contrast themselves and presetting the brightness and contrast. [17][18][19] In a study by Baksi, the author preset the brightness and contrast himself. 19 This, however, represents only one person's perception of the ideal brightness and contrast.…”

“…[17][18][19] In a study by Baksi, the author preset the brightness and contrast himself. 19 This, however, represents only one person's perception of the ideal brightness and contrast. Other observers may not have the same preference and thus bias may be introduced.…”

Comparison Accuracy Study of E Speed Intraoral Films and Extraoral PSP Digital Panoramic System, for Identifying the Extent of Alveolar Bone Destruction in Anterior Maxillary Region of Periodontitis Patients

“…This finding in according to Eickholz et al (8) that concluded that all the radiographic modalities underestimate the real amount of the bone loss. Baksi also stated that PSP accuracy is comparable with plain film in assessment of periodontal structures (9). Persson showed that panoramic can be used instead of full-mouth periapical in periodontitis patients (10).…”

The emerging role of maxillofacial radiology in the diagnosis and management of patients with complex periodontitis

“…A number of methodologies for computerized analysis of digital intra‐oral images have been introduced for the detection of periodontal alveolar bone loss. These include specific image enhancements , densitometric analysis , line density functions or application of digital subtraction radiography techniques .…”