Fig. 9From: Virtual pterygoid implant planning in maxillary atrophic patients: prosthetic-driven planning and evaluationFour categories of relationship between the body of the implant and the sinus cavity. A No implant body in the sinus cavity. B One side of implant anchored in the posterior sinus wall and the other side of implant in the sinus cavity. C Less than 1/2 of the whole implant body in the sinus cavity. D Greater than 1/2 of the whole implant body in the sinus cavityBack to article page