Effect of Different Treatment Modalities on The Supporting Structures of Lower Kennedy Class II cases with Pier Abutment

Abstract

This study was conducted to assess and compare the effect of three different treatment modalities used for rehabilitation of patients with a unilateral distal extension saddle in conjunction with pier abutment; through evaluating bone height changes for the pier abutments, canines and alveolar bone loss 10 mm distal to the pier abutment and by measuring pocket depth changes for the pier abutment and the canine. Twenty one patients were precisely selected and thoroughly examined in an attempt to reduce human variables and eliminate any factor that might adversely affect the results of this study. The selected patients were randomly divided into three equal groups:- Group I: Patients in this group were rehabilitated with a conventional distal extension removable partial denture after restoring the modification space by independent implant supported crown. Group II: Patients in this group were rehabilitated with a conventional distal extension removable partial denture after splinting the isolated second premolar to its neighboring canine by a fixed partial denture.