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Accuracy of quantitative digital subtraction radiography for determining changes in calcium mass in mandibular bone: an in vitro study

Identifieur interne : 009A13 ( Main/Exploration ); précédent : 009A12; suivant : 009A14

Accuracy of quantitative digital subtraction radiography for determining changes in calcium mass in mandibular bone: an in vitro study

Auteurs : M. Christgau [Allemagne, États-Unis] ; K. Hiller [États-Unis] ; G. Schmalz [Allemagne] ; C. Kolbeck [Allemagne] ; A. Wenzel [Danemark]

Source :

Journal of Periodontal Research [ 0022-3484 ] ; 1998-04.

RBID : ISTEX:94A60B1D5D9D5DE2BAFAD6098A0457DC8A5747A0

Descripteurs français

Wicri :
- topic : Calcium.

English descriptors

Abstract

The aim of this in vitro study was to determine the accuracy of digital subtraction radiography (DSR) to detect small changes in calcium mass in alveolar bone adjacent to tooth roots. In each of 4 dried porcine mandible segments, one interproximal and one buccal “defect” region was defined adjacent to a premolar root. A series of cortical and cancellous bone slices with a 50 μm‐stepwise increasing thickness (0‐5000 μm) were attached to the mandible segments covering the respective “defect” region. Standardized radiographs were quantitatively assessed for density changes using DSR. After dissolving each bone slice in hydrochloric acid, its calcium concentration was photometrically determined. For each bone slice, the mean calcium mass covering a single pixel of the subtraction image was calculated. The Wilcoxon signed‐rank test and the Mann‐Whitney U‐test were used for statistical analysis (α = 0.05). A strong linear correlation (r2 = 0.86‐1.00; p ≤ 0.001) was found between the thickness of the bone slices and their calcium mass. Cortical bone showed a 3.5 times higher mean calcium mass/pixel than cancellous bone. Furthermore, a strong linear correlation (r2 = 0.63‐1.00; p ≤ 0.001) was found between the mean calcium mass per image pixel and the radiographic density changes. Neither the bone type nor the “defect” localization had a significant influence on radiographic density changes caused by changes in calcium mass. A change in mean calcium mass per image pixel of 0.1‐0.15 mg was necessary to be detected by DSR. In conclusion, this study revealed a high accuracy of DSR to detect small changes in calcium mass in alveolar cortical and cancellous bone.

Url:

https://api.istex.fr/document/94A60B1D5D9D5DE2BAFAD6098A0457DC8A5747A0/fulltext/pdf

DOI: 10.1111/j.1600-0765.1998.tb02304.x

Affiliations:

Allemagne, Danemark, États-Unis
Texas

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Le document en format XML

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<author><name sortKey="Schmalz, G" sort="Schmalz, G" uniqKey="Schmalz G" first="G." last="Schmalz">G. Schmalz</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Actual bone changes</term>
<term>Actual change</term>
<term>Actual changes</term>
<term>Alveolar bone</term>
<term>Alveolar bone loss</term>
<term>Bone</term>
<term>Bone changes</term>
<term>Bone chips</term>
<term>Bone density changes</term>
<term>Bone slice</term>
<term>Bone slices</term>
<term>Bone thickness</term>
<term>Bone type</term>
<term>Bone types</term>
<term>Buccal</term>
<term>Calcium</term>
<term>Calcium changes</term>
<term>Calcium loss</term>
<term>Calcium mass</term>
<term>Calcium mass changes</term>
<term>Cancellous</term>
<term>Cancellous bone</term>
<term>Cancellous bone slices</term>
<term>Christgau</term>
<term>Clin</term>
<term>Clin periodontol</term>
<term>Conventional radiography</term>
<term>Correlation coefficient</term>
<term>Correlation coefficients</term>
<term>Cortical</term>
<term>Cortical bone</term>
<term>Cortical bone slice</term>
<term>Cortical bone slices</term>
<term>Defect</term>
<term>Defect localization</term>
<term>Defect region</term>
<term>Density changes</term>
<term>Dental implants</term>
<term>Dentomaxillofac radiol</term>
<term>Detection limit</term>
<term>Digital subtraction</term>
<term>Digital subtraction radiography</term>
<term>Experimental region</term>
<term>Grey level</term>
<term>Grey level value</term>
<term>Grey levels</term>
<term>Hausmann</term>
<term>Hiller schmalz</term>
<term>Image pixel</term>
<term>Immediate interest</term>
<term>Implant</term>
<term>Individual jaws</term>
<term>Interproximal</term>
<term>Linear correlation</term>
<term>Mandible</term>
<term>Mandible segment</term>
<term>Median</term>
<term>Median value percentiles</term>
<term>Median values</term>
<term>Metal pins</term>
<term>Mineral content</term>
<term>Oral pathol</term>
<term>Oral surg</term>
<term>Periodont</term>
<term>Periodontal</term>
<term>Periodontol</term>
<term>Physical noise</term>
<term>Pixel</term>
<term>Present study</term>
<term>Previous studies</term>
<term>Projection geometry</term>
<term>Quantitative assessment</term>
<term>Quantitative evaluation</term>
<term>Radiograph</term>
<term>Radiographic</term>
<term>Radiographic density</term>
<term>Radiographic density changes</term>
<term>Radiographic density gain</term>
<term>Radiography</term>
<term>Regression function</term>
<term>Regression lines</term>
<term>Significant influence</term>
<term>Single values</term>
<term>Small changes</term>
<term>Southard</term>
<term>Standardized radiographs</term>
<term>Subtraction</term>
<term>Subtraction image</term>
<term>Subtraction images</term>
<term>Subtraction process</term>
<term>Subtraction radiography</term>
<term>Tooth roots</term>
<term>Total bone mass</term>
<term>Trabecular structure</term>
<term>Wenzel</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en"><term>Actual bone changes</term>
<term>Actual change</term>
<term>Actual changes</term>
<term>Alveolar bone</term>
<term>Alveolar bone loss</term>
<term>Bone</term>
<term>Bone changes</term>
<term>Bone chips</term>
<term>Bone density changes</term>
<term>Bone slice</term>
<term>Bone slices</term>
<term>Bone thickness</term>
<term>Bone type</term>
<term>Bone types</term>
<term>Buccal</term>
<term>Calcium</term>
<term>Calcium changes</term>
<term>Calcium loss</term>
<term>Calcium mass</term>
<term>Calcium mass changes</term>
<term>Cancellous</term>
<term>Cancellous bone</term>
<term>Cancellous bone slices</term>
<term>Christgau</term>
<term>Clin</term>
<term>Clin periodontol</term>
<term>Conventional radiography</term>
<term>Correlation coefficient</term>
<term>Correlation coefficients</term>
<term>Cortical</term>
<term>Cortical bone</term>
<term>Cortical bone slice</term>
<term>Cortical bone slices</term>
<term>Defect</term>
<term>Defect localization</term>
<term>Defect region</term>
<term>Density changes</term>
<term>Dental implants</term>
<term>Dentomaxillofac radiol</term>
<term>Detection limit</term>
<term>Digital subtraction</term>
<term>Digital subtraction radiography</term>
<term>Experimental region</term>
<term>Grey level</term>
<term>Grey level value</term>
<term>Grey levels</term>
<term>Hausmann</term>
<term>Hiller schmalz</term>
<term>Image pixel</term>
<term>Immediate interest</term>
<term>Implant</term>
<term>Individual jaws</term>
<term>Interproximal</term>
<term>Linear correlation</term>
<term>Mandible</term>
<term>Mandible segment</term>
<term>Median</term>
<term>Median value percentiles</term>
<term>Median values</term>
<term>Metal pins</term>
<term>Mineral content</term>
<term>Oral pathol</term>
<term>Oral surg</term>
<term>Periodont</term>
<term>Periodontal</term>
<term>Periodontol</term>
<term>Physical noise</term>
<term>Pixel</term>
<term>Present study</term>
<term>Previous studies</term>
<term>Projection geometry</term>
<term>Quantitative assessment</term>
<term>Quantitative evaluation</term>
<term>Radiograph</term>
<term>Radiographic</term>
<term>Radiographic density</term>
<term>Radiographic density changes</term>
<term>Radiographic density gain</term>
<term>Radiography</term>
<term>Regression function</term>
<term>Regression lines</term>
<term>Significant influence</term>
<term>Single values</term>
<term>Small changes</term>
<term>Southard</term>
<term>Standardized radiographs</term>
<term>Subtraction</term>
<term>Subtraction image</term>
<term>Subtraction images</term>
<term>Subtraction process</term>
<term>Subtraction radiography</term>
<term>Tooth roots</term>
<term>Total bone mass</term>
<term>Trabecular structure</term>
<term>Wenzel</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Calcium</term>
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<front><div type="abstract" xml:lang="en">The aim of this in vitro study was to determine the accuracy of digital subtraction radiography (DSR) to detect small changes in calcium mass in alveolar bone adjacent to tooth roots. In each of 4 dried porcine mandible segments, one interproximal and one buccal “defect” region was defined adjacent to a premolar root. A series of cortical and cancellous bone slices with a 50 μm‐stepwise increasing thickness (0‐5000 μm) were attached to the mandible segments covering the respective “defect” region. Standardized radiographs were quantitatively assessed for density changes using DSR. After dissolving each bone slice in hydrochloric acid, its calcium concentration was photometrically determined. For each bone slice, the mean calcium mass covering a single pixel of the subtraction image was calculated. The Wilcoxon signed‐rank test and the Mann‐Whitney U‐test were used for statistical analysis (α = 0.05). A strong linear correlation (r2 = 0.86‐1.00; p ≤ 0.001) was found between the thickness of the bone slices and their calcium mass. Cortical bone showed a 3.5 times higher mean calcium mass/pixel than cancellous bone. Furthermore, a strong linear correlation (r2 = 0.63‐1.00; p ≤ 0.001) was found between the mean calcium mass per image pixel and the radiographic density changes. Neither the bone type nor the “defect” localization had a significant influence on radiographic density changes caused by changes in calcium mass. A change in mean calcium mass per image pixel of 0.1‐0.15 mg was necessary to be detected by DSR. In conclusion, this study revealed a high accuracy of DSR to detect small changes in calcium mass in alveolar cortical and cancellous bone.</div>
</front>
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<li>Danemark</li>
<li>États-Unis</li>
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Accuracy of quantitative digital subtraction radiography for determining changes in calcium mass in mandibular bone: an in vitro study

Accuracy of quantitative digital subtraction radiography for determining changes in calcium mass in mandibular bone: an in vitro study

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri