Applicability of an image analysis system in alveolar bone loss measurement

Abstract

Clinical and epidemiological studies in the field of periodontics and endodontics often utilize radiographs to monitor or measure the changes in bone structure and density. Periodontal bone loss or gain can be quantified on a radiograph by measurement of the distance between the bottom of the bony pocket and the apical contour of the involved tooth. The objective of this investigation was to study the accuracy of an image analysis system (IAS) to measure changes in height of the interproximal crest on radiographs. Artificial bone lesions were introduced in a dissectioned part of a human mandible. The distances between crest and apices were measured with a micrometer (MM). Radiographs were produced with horizontal and vertical deviations of 10 degrees. The radiographs were digitized and processed by computer. The landmarks in the digital image were enhanced mathematically and by histogram-based thresholding. The depth of the introduced defect was increased 6 times, followed by the measurement procedure. The IAS produced measurements of crown-apex distances with an accuracy of 0.066 to 0.358 mm. Repeated crest height measurements were recorded with an accuracy of 0.112 to 0.184 mm. Both the histogram-based binarization and the ellipse-fitting type of contour detection could be applied precisely. Misangulation errors during radiographic exposure of 10 horizontal or vertical did not statistically significant influence the IAS-measurements. The IAS can be applied in clinical trials and follow-up studies.

Clinical and radiographical evaluation of a bioresorbable collagen membrane of fish origin in the treatment of periodontal intrabony defects: A preliminary study

“…in 2000. In our study, conventional radiography with image analysis software (Auto CAD 2007) was used to assess radiographic parameters as applicability and reliability of the image analysis system in alveolar bone measurement have been studied previously by Micheal,[24] Hausmann[25] et al ., and Verdonschot[26] et al . However, advanced radiographic techniques like subtraction digital radiography remain the method of choice if subtle changes in mineralization of alveolar bone need to be detected.…”

“…However, advanced radiographic techniques like subtraction digital radiography remain the method of choice if subtle changes in mineralization of alveolar bone need to be detected. [26]…”

Evaluation of a bioresorbable collagen membrane of fish origin in the treatment of periodontal intrabony defects: A prospective clinical study

“…This observation is in accordance to the findings by Gottlow, et al .,[ 19 ] Becker and Burton,[ 20 ] and Micheal, et al . [ 21 ] In our study, conventional radiography with image analysis software (Auto CAD 2007) was used to assess radiographic parameters as applicability and reliability of image analysis system in alveolar bone measurement has been studied previously by Verdonschot, et al .,[ 22 ] Micheal,[ 23 ] and Hausmann, et al . [ 24 ] However, advanced radiographic techniques like subtraction digital radiography remains the method of choice if subtle changes in mineralization of alveolar bone need to be detected.…”

“…[ 24 ] However, advanced radiographic techniques like subtraction digital radiography remains the method of choice if subtle changes in mineralization of alveolar bone need to be detected. [ 22 ]…”

Estudo clínico e radiográfico do nível da crista óssea alveolar em pacientes

“…Os dados descritos na Figura 1 concordam com os obtidos por Kamma et al 16 (1999), que concluíram que a diminuição do nível da crista óssea alveolar é irreversível e está aumentado para fumantes. Segundo Verdonschot et al 29 (1991) e Varrela et al 28 (1995), essas diferenças ainda não estão totalmente explicadas, pois o mecanismo completo de destruição periodontal em fumantes ainda não é conhecido.…”