William Lawrence Sr Omnibit 5-15-14 William Lawrence Sr Omnibit 5-15-14 In 1987, American dentists used about 13 tons of gold in crowns, fillings and bridges. The precious metal can take a beating without distorting or corroding. Share this:PrintFacebookTwitterTelegramMeWeWhatsAppPinterestLinkedInParlerGabRedditEmailMorePocketTumblrLike this:Like Loading... Related