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Unformatted text preview: o Trabecular bone: 25%/year With age o bones tend to increase in diameter o trabecular bone grows thins o absorption and remodeling are affected by: vitamin D, calcium parathyroid hormone sex hormones particularly estrogen estrogen levels work to keep the pace of resorption II. Teeth Teeth develop in jaws from first few months of fetal life - 18-20y 1) Epithellial Cells dive down from mouth cavity to jaws 2) Interact with mesenchyme -> tooth germ/bud 3) inner enamel epithelium (IEE) expands and buckles at different rates -> sites of future cusps/fissures 4) cells of IEE induce cells opposite to form into odontoblasts (form dentin) 5) enamel forming cells ( ameloblasts ) move out to form enamel on top of the enamel-dentin junction (EDJ)...
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- Spring '08