Endodontically treated posterior teeth will be restored with zirconia crowns with two finish line designs(feather edge and rounded shoulder) and two occlusal reduction schemes(flat and planer).The crowns were designed with exocad software program .After cementation clinical performance in terms of marginal adaptation ,marginal discoloration, fracture and secondary caries was evaluated at 3 subsequent follow-up visits every 3months for 1 year.
patients from both genders.
age range 18-65 years.
patients with endodontically treated posterior teeth.
vital teeth
anterior teeth.
edentulous patient.
patient with history of significant systemic diseases.
Parallel
Control group(PS)Planer occlusal scheme with rounded shoulder finish line
Other interventionControl group (PS) will have planer occlusal scheme with rounded shoulder finish line.
First intervention group(FF) flat occlusal scheme with feather edge finish line
Procedure/SurgeryFirst intervention group we will have flat occlusal scheme with feather edge finish line
Second intervention group(FS) flat occlusal with rounded shoulder finish line design
Procedure/SurgerySecond intervention will have flat occlusal scheme with rounded shoulder finish line design
Gingival index score system and United States Public Health Services Criteria(USPHS)
Marginal adaptation ,marginal discoloration ,fracture and secondary caries evaluated using (USPHS) United States Public Health Services Criteria and gingival index score system is used to evaluate gingival response.
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