Clinical Assessment of Endodontically Treated Posterior Teeth Prepared With Two Occlusal Designs and Two Ceramic Full Coverage Restorations

Inclusion Criteria: * Patients with posterior root canal treated teeth that require full coverage restoration. * 20 - 50 years old. * Males or Females. * Good oral hygiene. * Presence of favorable occlusion and teeth are in normal alignment with the adjacent teeth. * Patients agreed to return to follow-up evaluation. Exclusion Criteria: * Active periodontal or pulpal diseases. * Lack of opposing dentition. * Severe medical complications. * Pregnancy. * Lack of compliance. * Evidence of parafunctional habits * Temporomandibular joint disorders