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Structural analysis of the mandible by quantitative computed tomography

Analyse structurale de la mandibule par tomographie assistée par ordinateur

  • Radiological Anatomy
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Summary

The study presents quantitative computed tomography (QCT) as a noninvasiv method for analyzing the inner bone structure. Randomly selected mandibles from the osteological collection of the “Drago Perović” Institute of Anatomy, School of Medicine, Zagreb were CT-scanned in five bone areas. Analyzing the densitometry curve in two horizontal levels the relation between the compact and spongy bone and the total amount of bone substance in each area were determined. The smallest bone quantity was found in the area of the neck and angle of the mandible, the areas of most frequent bone fractures. The alveolar part of the bone, apart from the area of the angle, was considerably less thick than the base of the mandible. The compact bone was predominant in all CT-scans.

Résumé

Cette étude présente la tomographie quantitative assistée par ordinateur comme une méthode non exclusive d'analyse de la structure interne de l'os. Des mandibules choisies au hasard dans la collection ostéologique de l'institut “Drago Perović” d'Anatomie de l'Ecole de Médecine de Zagreb furent examinées en 5 positions par CT. A partir de l'examen de la courbe densitométrique en deux niveaux horizontaux, les relations entre les parties spongieuses et compactes de l'os d'une part, et la quantité totale de substance osseuse d'autre part, dans chaque zone, furent déterminées. La plus petite quantité de substance osseuse fut trouvée dans les zones du col et de l'angle de la mandibule, siège le plus fréquent des fractures de l'os. La partie alvéolaire de l'os, à l'exception de celle de l'angle, était considérablement moins épaisse que la base de la mandibule. L'os compact prédominait dans tous les examens par CT.

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Percač, S., Nikolić, V. Structural analysis of the mandible by quantitative computed tomography. Surg Radiol Anat 14, 155–158 (1992). https://doi.org/10.1007/BF01794893

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  • DOI: https://doi.org/10.1007/BF01794893

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