Cortical threads at distal region of implant that engage in cortical bone. Cortical threads have deep and sharp thread angle which allows threads to wedge easily in hard cortical bone.
Cancellous threads at superior region to cortical threads that engage in cancellous bone in alvelor region. Cancellous thread is a combination of two threads, Base thread and top thread which is small sharp thread formed on the top of base thread.
Base thread has 3 distinct features.
Minor thread diameter is bigger than cortical thread
Threads are broader and shallower than cortical tread
Conical thread profile