Abstract
Although implants have been recently used in treatment for various cases， partial dentures have also been frequently used in prosthetic cases for missing teeth in daily dental practice. However，patients with distal-extension missing often experience many adverse symptoms or complaints，including appearance of pain due to denture settling and vertical displacement due to rotation of the denture. Therefore， I believe that use of implants is essential for establishment of vertical stop in the multiple posterior defects case. In contrast， implant treatment involves a relatively high level of surgical stress and a heavy economic burden on patients due to expensive treatment costs. Thus， treatment was performed with the implant-supported overdenture， which can induce the rest effect for obtainment of denture stability in this case， resulting in excellent results.
