"The Influence of Different Artificial Tooth Material on the Supporting Structure of Lower Kennedy Class I Partial Denture" (In vivo study)

Abstract

Patients rehabilitated with maxillary complete denture opposing mandibular bilateral distal extension partial denture are vulnerable to trauma leading to destructive changes in both the maxillary and mandibular ridges. It was referred to such changes as combination syndrome in which early bone loss from the anterior maxillary jaw is the triggering factor for such retrograde changes. Five features of this condition were described, they included loss of bone in anterior part of maxillary ridge, overgrowth of the tuberosities, papillary hyperplasia of the hard palate, over eruption of lower anterior teeth, and loss of bone beneath the removable partial denture bases. Six additional changes associated with combination syndrome. They included loss of occlusal vertical dimension, occlusal plane discrepancy, anterior spatial repositioning of the mandible, poor adaptation of the prostheses, epulis fissuratum and periodontal changes. (1,2)