The impacts of prosthetic interventions on mastication predominance in Kennedy Class ? patients

Purpose The purpose of this study was to investigate the effects prosthetic interventions in patients with Kennedy Class ? (unilateral missing posterior teeth) on mastication predominance.Methods subjects comprised II and healthy dentate volunteers (HD group). were asked freely chew test foods (chewing gum, beef jerky, peanuts). Electromyographic activity bilateral masseter muscles recorded twice (before after intervention). chewing side (right or left) judged by level root mean square electromyographic amplitude. Mastication predominance assessed using index (MPI; range 0-100%). Each patient restored a removable partial denture (RPD) an implant-supported fixed prosthesis (IFP). statistically evaluated differences between MPI before (pre-MPI post-MPI , respectively).Results There significant difference pre-MPI HD group (HD-MPI) for all (P < 0.0001). Statistical analysis also demonstrated measured each three food items both RPD IFP groups Multiple comparisons revealed that group, but not comparable HD-MPI, although there no among when MPIs calculated peanuts.Conclusions Prosthetic improved patients. Depending type, might contribute better improvement than depending food.