Maxillary Sinus Lift
Implants need a particular amount of bone height and width surrounding it for optimal stability. To determine how much bone is remaining, a three dimensional x-ray called a cone-beam computed tomography (CBCT) is required to view the bone from all directions. For those that have experienced bone loss in the upper arch, a procedure can be performed to restore the lost bone. This procedure is called a sinus lift.
Depending on how much bone you have remaining will determine which sinus lift approach is taken — either the lateral window or the crestal approach. The crestal approach can be performed at the time of implant placement in one appointment. The lateral window approach requires two appointments because it necessitates time to allow the placed bone graft to integrate. At the first appointment, the maxillary sinus is lifted and a bone graft is positioned beneath it. About six months later, the implant can be placed.
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