Increase in pathological change - but loss of tongue papillae and taste buds. Loss of collagen from fibres and an increase in elastic. Fatty degeneration and fibrosis. Fibres less flexible. U.V. light accelerates ageing.
Loss of teeth means loss of bone.
Loss of alveolar bone leads to loss of vertical dimension. Osteoporosis sets in after menopause - particularly in female. Effects exaggerated by malabsorbtion syndromes. Use development tables for the under 20's.