Purpose:.to evaluate the survival rate of endodontically & with post treated teeth after prosthetic restoration.
N= 864 teeth ) 780 nonvital and 84 vital abutment teeth .(
•Endodontic post length end 3-5 mm away from the apex.
•Post diameter chosen according to the endodontic instrumentation.
•Core : Sufficient coronal tooth structure present – composite build-up , Insufficient à cast-metal core.
•Patients recalled every 6 months.
•Survival curves were calculated related to the patient gender, prosthetic restoration (crown, FPD, RPD) abutment tooth location & post properties (length, diameter, core material, cement).
Most highlighted Results:
Survival rates of nonvital abutments for FPDs à 92.7% VS RPD – 51% after 60 months.
-Direct prefabricated post & core restorations survival rate in FPD, RPD respectively – 98%, 84% VS cast post & core survival rate in FPD, RPD respectively – 90%, 43%.
-Post diameter sized ISO 90 had the highest survival rate 60%.
-RPDs molars abutments showed no failure, which was statistically significantly different as compared to premolars.
•Restorations in endodontically treated teeth had a higher risk for failure when used as RPD abutments than as FPD abutments.
•Direct post & core restorations had a higher survival rate than post with cast cores.