Biosonic Piezo Tips - Scaling Implant Maintenance (4/Pk)61 Different Tips Solutions, Endodontics, compatible systems Maintenance And Restorative Treatments. IM1 Used on compatible systems for the removal of calculus on fixtures, abutments and crowns. The working end is coated with PEEK material to avoid damaging or discoloring the compatible systems. Used together with the instrument holders IH1 or IH2 Same design as IM 1, but the working end is angulated for better access to difficult to reach surfaces.