Inclusion Criteria:  One posterior tooth (molar or premolar) to be replaced Vital abutments or abutments with an adequate endodontic treatment Abutment not crowned previously Periodontally healthy abutments with no signs of bone resorption or periapical disease Adequate occlusogingival height for an appropiate connector area of at least 9 mm2 Stable occlusion and the presence of natural dentition in the antagonist arch.  Exclusion Criteria:  Patients who require a Fixed Dental Prosthesis of more than three units Patients who present reduced crown length (less than 3 mm occlusogingival heigth) Poor oral hygiene, high caries activity, or active periodontal disease