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Comparison of particle‐size distributions determined by optical scanning and by sieving in the assessment of masticatory performance

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Comparison of particle‐size distributions determined by optical scanning and by sieving in the assessment of masticatory performance

Auteurs : L. Eberhard [Allemagne] ; H. J. Schindler [Allemagne] ; D. Hellmann [Allemagne] ; M. Schmitter [Allemagne] ; P. Rammelsberg [Allemagne] ; N. N. Giannakopoulos [Allemagne]

Source :

Journal of Oral Rehabilitation [ 0305-182X ] ; 2012-05.

RBID : ISTEX:CABD7336C81D903FA6A752A70269EF64CA9E907D

Descripteurs français

Wicri :
- topic : Scanner.

English descriptors

Abstract

Summary Aim of this study was to introduce a feasible and valid technique for the assessment of masticatory performance that is comparable to the standard sieving method. Twenty‐one chewing samples (Optosil) comminuted by healthy dentate adults were analysed with a sieving and scanning method. Scanning was performed using a conventional flatbed scanner (1200 dpi). All scanned images underwent image analysis (ImageJ), which yielded descriptive parameters such as area, best‐fitting ellipse for each particle. Of the 2D‐image, a volume was estimated for each particle, which was converted into a weight. To receive a discrete distribution of particle sizes comparable to sieving, five chewing samples were used to calculate a size‐dependent area‐volume‐conversion factor. The sieving procedure was carried out with a stack of 10 sieves, and the retained particles per sieve were weighed. The cumulated weights yielded by either method were curve‐fitted with the Rosin–Rammler distribution to determine the median particle size x50. The Rosin–Rammler distributions for sieving and scanning resemble each other. The distributions show a high correlation (0·919–1·0, n = 21, P < 0·01, Pearson’s correlation coefficient). The median particle sizes vary between 3·83 and 4·77 mm (mean: 4·31) for scanning and 3·53 and 4·55 mm (mean: 4·21) for sieving. On average, scanning overestimates the x50 values by 2·4%. A modified Bland–Altman plot reveals that 95% of the x50 values fall within 10% of the average x50. The scanning method is a valid, simple and feasible method to determine masticatory performance.

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https://api.istex.fr/document/CABD7336C81D903FA6A752A70269EF64CA9E907D/fulltext/pdf

DOI: 10.1111/j.1365-2842.2011.02275.x

Affiliations:

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<term>Blackwell publishing</term>
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<term>Dentate</term>
<term>Dentate adults</term>
<term>Denture</term>
<term>Different methods</term>
<term>Different orientations</term>
<term>Different types</term>
<term>Discrete distribution</term>
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<term>Discriminant analysis</term>
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<term>Healthy volunteers</term>
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<front><div type="abstract">Summary Aim of this study was to introduce a feasible and valid technique for the assessment of masticatory performance that is comparable to the standard sieving method. Twenty‐one chewing samples (Optosil) comminuted by healthy dentate adults were analysed with a sieving and scanning method. Scanning was performed using a conventional flatbed scanner (1200 dpi). All scanned images underwent image analysis (ImageJ), which yielded descriptive parameters such as area, best‐fitting ellipse for each particle. Of the 2D‐image, a volume was estimated for each particle, which was converted into a weight. To receive a discrete distribution of particle sizes comparable to sieving, five chewing samples were used to calculate a size‐dependent area‐volume‐conversion factor. The sieving procedure was carried out with a stack of 10 sieves, and the retained particles per sieve were weighed. The cumulated weights yielded by either method were curve‐fitted with the Rosin–Rammler distribution to determine the median particle size x50. The Rosin–Rammler distributions for sieving and scanning resemble each other. The distributions show a high correlation (0·919–1·0, n = 21, P < 0·01, Pearson’s correlation coefficient). The median particle sizes vary between 3·83 and 4·77 mm (mean: 4·31) for scanning and 3·53 and 4·55 mm (mean: 4·21) for sieving. On average, scanning overestimates the x50 values by 2·4%. A modified Bland–Altman plot reveals that 95% of the x50 values fall within 10% of the average x50. The scanning method is a valid, simple and feasible method to determine masticatory performance.</div>
</front>
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Comparison of particle‐size distributions determined by optical scanning and by sieving in the assessment of masticatory performance

Comparison of particle‐size distributions determined by optical scanning and by sieving in the assessment of masticatory performance

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