Sinus Bone Regeneration
Sinus bone regeneration is a safe and predictable procedure, and has been used in implant dentistry since the early 1980’s. Dr Kammeyer has been performing this procedure routinely since the mid 1990’s.
The maxillary sinuses are behind your cheeks and above the upper teeth. Sinuses are empty space that have air in them. Some of the roots your upper teeth extend up into the maxillary sinuses. If an infection develops in a tooth, it can subsequently work into the maxillary sinus. When these upper teeth are then removed, there is bone loss and hopefully some bone separating the maxillary sinus and the mouth. The longer you go without teeth there, the more bone is lost. If you wear a denture our partial denture that accelerates the loss of bone. See the Story of Progressive Bone Loss under Patient Information. Dental implants need bone to hold them in place, and they in turn stimulate the bone so is remains stable. When the sinus wall is very thin, it is impossible to predictably place dental implants in this bone. Note, the floor of the sinus is the roof of the upper jaw.
There is a solution and it’s called sinus bone regeneration or sinus lift. It is typically performed in one of two ways:
Dr Kammeyer enters the sinus from where the upper teeth used to be. The sinus membrane is then lifted upward and donor bone is inserted into the floor of the sinus. With the technique illustrated above, there is enough bone that the teeth can be removed, the bone placed as well as the implants, all in one procedure. After several months of healing, the bone becomes part of the patient’s jaw, turning into new bone, and supporting the dental implants and the forces on the new teeth.
When there is little bone below the sinus to hold the dental implants, a 2 stage procedure is needed.
At the first procedure the bone is added to the sinus and allowed to integrate and be replaced by new bone for 2-4 months. After that time of bone replacement the implants are placed.
The dental implants are then inserted and stabilized in this new sinus bone. More time is allowed to pass for the bone to grow tightly around the dental implants, often 4-6 months. The dental implants are then tested for stability to assure that they will be strong so you can chew whatever you want. The sinus bone regeneration makes it possible for many patients to have dental implants when years ago there was no other option other than wearing loose dentures.
With some of the newer techniques we use, this is one of many choices that we consider when deciding what will give you the most predictable result and what alternative treatment we could consider that may be adequate.