Sinus Modification for Implant Placement


The maxillary sinuses are behind your cheeks and on top of the upper teeth. Sinuses are like empty rooms that have nothing in them. Some of the roots of the natural upper teeth extend up into the maxillary sinuses. 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 to hold them in place. When the sinus wall is very thin, it is impossible to place dental implants in this bone.

The solution is a sinus augmentation or sinus lift graft. The dental implant surgeon enters the sinus from where the upper tooth or teeth used to be. The sinus membrane is then lifted upward and donor bone is inserted into the floor of the sinus. A resorbable membrane may be placed over the opening and graft material. In some cases, a membrane is not necessary. Keep in mind that the floor of the sinus is the roof of the upper jaw. After six to nine months of healing, the bone becomes part of the patient’s jawbone. At that point, dental implants can be inserted and stabilized in this new sinus bone.

Case 1-Sinus Modification for Implant Placement
Sinus Modification for Implant Placement arrow Sinus Modification for Implant Placement
This patient wanted to replace her missing upper back teeth and she did not want a removable appliance. The bone in the area was not sufficient for implant placement due to the considerable bone resorbsion that has occurred after her teeth were extracted. A sinus augmentation was completed allowing implants and final permanent crowns to be placed.