Inclusion Criteria:  Pt aged 21-60 years old, be able to read and sign the informed consent document. Psychologically and physically able to withstand conventional dental procedures. Patients needing posterior full coverage restorations Patients with sound natural antagonists. Have no active periodontal or pulpal diseases Able to attend punctually for preplanned visits and evaluation.  Exclusion Criteria:  Patients with poor oral hygiene, high caries risk and uncooperative patients. Pregnant women. Psychiatric problems or unrealistic expectations. Lack of opposing dentition in the area of interest. Restored occlusal surface opposing the planned restoration. The presence of a removable or fixed orthodontic appliance. Patients with parafunctional habits.