Abstract
Seventy male Wistar rats were equally divided into control and experimental groups fed on powdered diets containing 21.7 and 7.6 per cent protein, respectively. Five control and 5 experimental animals were killed at 4-weekly intervals for 4 months and then after 6, 9 and 12 months. Study of demineralized sections with a modified Chalkley point graticule allowed histometric assessment of the density of alveolar trabecular bone in the upper and lower molar areas. The protein deficiency resulted in a highly-significant reduction ( p < 0.001) in bone density, i.e. osteoporosis, especially in the lower jaws. A moderately high correlation between trabecular density and weight was found in both groups.
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