iDentistry The Journal January 2017 | Page 39

The Journal rule by a margin of any significance is almost certain to invite problems. 3 Inadequate abutment support had led to delamination of ceramic veneer from metal sub structure and periodontal problem in abutment teeth. In this case, a removable prosthesis was indicated as these were insufficient number of supporting natural teeth and large edentulous spans for planning a fixed prosthesis. All the abutment teeth were strengthened by splinting and full veneer crowns. Double palatal strap major connector for Kennedy’s class 3 modification 1, was made as it preserved natural thermal stimulation and taste sensation for the patient . The quadrilateral configuration of the partial denture effectively controlled stresses by judiciously distributing occlusal stresses on the abutment teeth. Quadrilateral clasping consists of a retentive clasp at each end of edentulous space on the terminal abutment tooth thus providing retention and stability. Parallel guide planes were created on the abutment for the desired path of insertion and withdrawal. Rest seats helped to control stresses by directing forces transmitting to abutment teeth along the long axis of the teeth as the periodontal membrane is capable of withstanding vertical forces of far greater magnitude th