4.2 mm Interchangable Osteotome Spreader, Straight 4.2 mm Interchangable Osteotome Spreader, Straight OSTMSP42 4.2 mm Osteotome used for lateral bone condensation for elevation of the sinus floor. 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