When a beaver builds a natural dam or an engineer plans a man-made dam, both design the structures to control and hold back debris and water. Dams form barriers to unwanted elements in the environment; logs don’t jam and block free-flowing streams, water doesn’t flood areas meant to stay dry, and unwanted objects are kept from washing through and mucking up the waters. Dental dams act much the same way by controlling the flow of … Read entire article »