I would usually prefer to deliver a normal sized tooth to close the contacts between the adjacent teeth and provide ideal occlusal function. I usually prefer a wider diameter titanium implant for a zirconia molar crown.
While it is sometimes possible to clean out an infection around a dental implant and bone graft, it is not always advisable. There are many factors that must be considered to determine how predictable the procedure will be. These factors include the patient's medical history, the size of the defect, location and more.
If there is adequate bone above the nerve, then the answer is yes. However, I wouldn’t think that placement of implant supported teeth in the lower 3rd molar (wisdom tooth) area would provide any aesthetic benefit. I have placed implants in those areas in the past when there was an opposing erupted 3rd molar and the patient wanted more occlusal function.Glenn J. Wolfinger, DMD, FACP
Zirconia implant bridges are being used more and more for All-on-4 implant restorations, especially in the upper arch. They are heavy in comparison to titanium frameworks with acrylic teeth, but are strong and durable.
Obviously, each patient situation is unique. However, there are different lengths and diameters of implants that may be used depending on the existing bone volume. In some cases, short implants might be a solution; in other cases, bone grafting followed by dental implant placement may be indicated. A full-arch implant restoration may also be an option if adequate bone volume is present in the adjacent areas of the jaw. Glenn J. Wolfinger, DMD, FACPBoard Certified ProsthodontistPi Dental Center