SD-SD refill DrillsDSI Drills For Crestal Sinus Lifting are made to prepare and widen implantation sockets in sinus lifting procedures. These drills feature a special non sharp ending to prevent sinus membrane perforation and associated complications. These drills are suitable for any crestal sinus lifting procedure. Also, they prioritize patient safety, delivering predictable results and expediting the healing process. These drills are highly durable and their advanced