The Prosthesis is designed at the onset of dental implant treatment to satisfy the patient’s need and desires and to obtain optimal results. It may range from fixed prosthesis to one with soft tissue support. Once this is established, the required size, number and location of abutments necessary to satisfy the protho requirements are established. The main criteria for proper implant support is the amount of available bone.
Misch CE: Dental Implant Prosthetics, Mosby Inc 2005