Reamer DrillDSI Crestal Reamer Drills are developed to prepare and expand an implantation socket in sinus lifting procedures. The drills are made with a special "safe" rounded top that prevents the risk of sinus membrane perforation and eliminates the complications that can be caused by it. The drills can be used for any crestal sinus lifting procedure. They are much safer for the patient and less time consuming. Delivering predictable results without