All-on-4 treatment is one option for edentulous and soon-to-be edentulous patients. Its success depends on many factors, and patients must be properly examined before it is recommended.
Although most patients are suitable for this treatment, there are some circumstances that have to be taken into consideration before it is recommended. In many cases it is advised to have 6 or 8 implants instead of All-on-4 surgery.
Medical status
Before getting an All-on-4 denture, you are advised to go through a medical check-up, because there are some health conditions that may affect the outcome of the treatment. For example, losing your teeth may be caused by undiagnosed diabetes. An unattended diabetic condition is a risk to the success of All-on-4.
Smoking and other unhealthy habits
If you are a heavy smoker the risk of failure may be higher. Smoking is not a contraindication, but could be a reason to consider getting more than four implants to support your final prosthesis.
Amount of jawbone remaining
Remaining jawbone is evaluated with a CBCT scan during your first consultation. If you don't have enough bone to support the implants, you still may be sutiable for the procedure, however bone grafting may be necessary.