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I am going to be doing a Summers lift to install implants that will extend into the maxillary sinus. Â What I plan on doing is fracturing the sinus floor with an osteotome and pushing the segments up and then placing a bone graft. Â I was wondering if I could used calcium sulfate instead of bone graft materials. Â Is this an FDA approved use for calcium sulfate? Â Is this a Â procedure that will have predictable success? Â What do you recommend?