Natural Dentition, Prosthesis and Antagonist Wear 3D Analysis

Wear resistance is one of the most important physical properties of teeth, and wear resistance of zirconia against artificial acrylic, enamel and composite resin denture teeth has not been clearly established.Implant-supported dental restorations present a higher threshold for occlusion perception when compared to natural teeth, which can occlusal overload mechanisms or lead to wear of rehabilitation materials or the antagonist arch.In clinical conditions, however, many other factors influence the complex interaction between dental enamel and opposing substrates: patient-related factors such as dietary habits, dysfunctional occlusion, masticatory forces, and bruxism contribute to accelerated enamel loss of antagonist teeth.

Dentate Group :Inclusion criteriafully dentate (with at least 10 teeth ) and do not have any tooth mobility;at least 12months follow upExclusion criteria- missing more than 4 teeth, extensive caries, bonded orthodontic bracketsEdentulous Group:Inclusion Criteria:Maxilla or Mandible Implant full-mouth implant restorationMonolithic ceramic or hybrid-acrylic restorationat least12 months Follow-upExclusion Criteria:Heavy bruxistsPatients that changed the full arch rehabilitation during the study (ex: framework fracture or lab reparation)