Sinus lift procedure may be done in cases where bone is inadequate for placement of dental implants in the upper jaw posterior region.
Maxillary sinuses are air-filled cavities in the upper jaw. Severe bone loss can cause the floor of the maxillary sinus to lower and get close to gums. This leads to insufficient height of bone and dental implants cannot be placed. Therefore, before placing the implant screw, the sinus lining is “lifted” and either rhBMP-2 or a bone graft is tucked below the lining.