Edentulous Ridge Chisel (#36 Gold Foil Knife) Edentulous Ridge Chisel (#36 Gold Foil Knife) GF36 The Edentulous Ridge Chisel initiates splitting extremely narrow bone ridges when a bur is not recommended with a 4.8mm bi-beveled working end. Where to Buy x Category - Any - Dealer Partners Sales Representative Strategic Markets Schools Representative Accutronâ„¢ Equipment Sales Zip Code Find Representative Reset No results found. Please try a different search or explore: Sales Representatives | Dealer Partners | Strategic Markets | Schools | Accutron