Sinus bone grafts are also performed to replace bone in the posterior upper jaw.
The maxillary sinuses are located above the roots of the upper teeth. When these upper teeth are removed, there is often just a thin wall of bone separating the maxillary sinus and the mouth. Dental implants need bone for anchorage to provide stability. Therefore, if the sinus is located in the area of the future implant site, one or two types of sinus lift procedures will be necessary.
INFERIOR SINUS LIFT PROCEDURE
If there is enough bone present between the upper jaw ridge and the bottom of the sinus to stabilize the implant, sinus augmentation and implant placement can sometimes be performed as a single procedure called an inferior sinus lift. In the instance that there is not enough bone available, a lateral sinus augmentation would be performed first, followed by a graft which would be left to mature for a few months. Accessing the sinus where the upper teeth used to be, the periodontist lifts the sinus membrane upward.
In the space made by the lifting the sinus membrane, the periodontist places in the donor bone. After several months of healing, the donor bone fuses becoming the new sinus bone. The patient’s jaw will now allow for dental implants to be inserted. During the healing stage, the patient wears a temporary denture in order to resume eating a regular diet. Most patients will not experience any disruption in their daily routine. Thanks to the sinus graft, patients now have the option to use dental implants while only a few years ago had no choice but to wear dentures.