Toback Gregory A. D.M.D.; Schmitt, Scott D.M.D.; Meffert, Roland D.D.S.Implant Dentistry: 1998 Original Article: PDF Only Abstract When the edentulous condition has existed for many years, extensive ridge resorption may complicate the ability to function with a conventional prosthesis. Implant therapy in conjunction with bone augmentation procedures may provide new options for the predictable restoration of the edentulous state. However, complex implant reconstruction may place considerable stress on the patient's ability to function throughout therapy. Providing stable interim prostheses and smooth transitions between procedures may alleviate the problem. This can be accomplished only with extensive diagnosis, treatment planning, and the judicious use of transitional prostheses. The first part of this case report focuses on the planning stages of a complex implant dental rehabilitation. © Williams & Wilkins 1998. All Rights Reserved.