A Glass Act For Periodontists
A boxer with a "glass jaw" is considered an easy knockout. But putting glass in the jaw may soon keep teeth from falling out. Last month, the Food & Drug Administration approved the use of a glass compound called Perioglas to fill gum pockets formed by periodontal disease. Perioglas is a granulated form of Bioglass, which the FDA earlier approved to replace middle-ear bones and tooth roots. University of Florida engineer Larry Hench dreamed up Bioglass in 1969 and licensed it to US Biomaterials in Timonium, Md.
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