Right Apical Retro Filling Instrument Right Apical Retro Filling Instrument MRFR Right Apical Microsurgical Retro Filling Instrument designed for apical surgical applications. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.