Implant supported fixed dentures (a.k.a. hybrid dentures) are a way to replace teeth when all or most of the teeth are missing on the upper or lower jaw. This type of prosthesis is sometimes used when a patient cannot tolerate the palate being completely covered; it is more comfortable with less material in the mouth. In the upper jaw, six to eight dental implants are placed while in the lower jaw four to five implants are used. The prosthesis consists of a metal frame screwed onto the implants with teeth and pink plastic added to mimic the teeth and gums. This type of denture is not removable by the patient, only by Dr. Frey, and since the implants that it is attached to are fused directly to the bone, these tooth replacements are as solid as the original teeth. The chewing power of this denture is much greater than a conventional denture. It is equal to the chewing power of natural teeth. Annual hygiene is necessary in maintaining your investment.