Patent ID: 8083747

Claim:
A maxillary sinus bone grafting method comprising: removing mucoperiosteum having a size of a dental implant to be implanted at an alveolar crest area using a tissue punch drill without causing a mucoperiosteal flap, drilling a maxillary sinus floor without causing damage to a maxillary sinus membrane by inserting a sinus lift drill which has a protruding member in a body of the sinus lift drill so as to protrude from and retract in a longitudinal direction of the body, elevating the maxillary sinus membrane and injecting a maxillary sinus bone graft adjacent to the drilled maxillary sinus floor; and installing the dental implant in an inside portion of the drilled maxillary sinus floor, wherein the step of injecting the graft comprises: storing the graft in an amount ranging from 0.3 cc to 0.5 cc in a syringe having a capacity of 1 cc; then removing a needle from a leading end of the syringe; then bringing a nozzle of the syringe into close contact with an opening of the drilled hole; then forcing the syringe into the same hole under predetermined pressure; and then injecting the graft into the same hole.