Effect of physical consistency of food on the biomechanical behaviour of the mandible in the growing rat

European Journal of Oral Sciences
Clarisa BozziniR M Alippi

Abstract

This study investigated the effect of a soft diet, given to growing rats, on the biomechanical behaviour of the mandible. Female rats, 30 d of age, received an ordinary diet in the form of pellets (i.e. hard-diet group), and another group of female rats received the same diet, but ground and mixed with water, forming a paste (i.e. soft-diet group). The experiment lasted 8 wk. Body-weight and body-length gains were not affected by the consistency of the diet. No significant differences were found between groups concerning the length, height, and area of the right hemimandible. Mechanical properties of the right hemimandibles were determined using a three-point bending test, in which bones were stressed on a perpendicular line immediately posterior to the posterior face of the third molar. Structural properties (load at yielding, load at fracture, structural stiffness, and elastic energy absorption) and geometric properties of the fracture section (cross-sectional area, cortical area, and moment of inertia) were significantly lower in hemimandibles of rats of the soft-diet group than in those of rats of the hard-diet group. Material properties of the mandibular bone tissue (elastic modulus and maximal elastic stress), which were ...Continue Reading

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Citations

Dec 8, 2016·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Harmanpreet KaurTarek El-Bialy
Mar 11, 2018·Wound Repair and Regeneration : Official Publication of the Wound Healing Society [and] the European Tissue Repair Society·Claudia Ester MohnJuan Carlos Elverdin
Aug 8, 2020·Sleep & Breathing = Schlaf & Atmung·Antonela Romina TerrizziMaría Pilar Martínez
Aug 7, 2021·Archives of Oral Biology·Renata Travassos da Rosa Moreira BastosDavid Normando

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