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1 Department of Anatomy, College of Dentistry, New York University
The patterns of aging of the oral tissues of the monkey, rat, and hamster were studied. The monkey was found to undergo the most severe gingival inflammation. The apical progress of the epithelial attachment was fastest in the hamster. The alveolar bone increases in density from immaturity to maturity and then decreases in density in the three animals studied.
Downgrowth of the epithelial attachment, continuous cementum deposition, fibrosis, decreased cellularity, and osteoporosis are consistent findings associated with aging. It was noted that a characteristic of the aged animal was an increased variation in tissue morphology.
Submitted on August 27, 1959
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