In the case of bone graft case(maxillary sinus), the operator can directly grasp the maxillary sinus membrane and adjust it so that the maxillary sinus membrane can be elevated in the desired direction and the implant can be placed after bone transplantation in the maxillary sinus.
As the amount of bone removal increases due to the 2 stage surgery, bone damage, pain and swelling are large.
pain and swelling can be minimized and quick return to daily life is possible.