Implant Direct Legacy™ System

Mini-threads with Double-lead Threads for Faster Insertion
The bodies of the Legacy1, Legacy2 and Legacy3 implants are tapered to facilitate insertion in an undersized socket (stop at intermediate drill) for expansion in soft bone. This increases initial stability (G. Niznick: Clinical Oral Health 2000 “Achieving Success in Soft Bone”). The SBM textured surface extends over the entire endosseous portion of the Legacy system implants. Mini-threads start 1mm below the crest of the bone and extend for 2.0-2.5mm before transitioning into double-lead threads to the apex of the implant. The mini-threads are half the depth and half the distance between adjacent peaks compared to the double-lead threads that extend to the apex of the implant. Mini-threads reduce stress in the critical crestal bone region while double-lead threads reduce the number of turns required to seat the implant. Vertical cutting grooves extend up the implant from the apex for self- tapping insertion.