Failures of fiber posts were mainly due to post loss of retention , while metal post failures were mostly related to root fracture , post fracture and crown and /or post loss of retention .
In conclusion , metal and fiber posts present similar clinical behavior at short to medium term follow-up .
Remaining dental structure and ferrule increase the survival of restored pulpless teeth .
The aim of this systematic review was to compare the clinical performance and failure modes of teeth restored with intra-radicular retainers .
Controlled Clinical Trial on the Outcome of Glass Fiber Composite Cores Versus Wrought Posts and Cast Cores for the Restoration of Endodontically Treated Teeth: A 5-Year Follow-up Study.
PURPOSE The aim of this study was to compare the 5-year outcomes of glass fiber composite with cast posts and cores for the restoration of endodontically treated teeth . MATERIAL S AND METHODS A total of 143 patients in need of 203 full ceramic restorations on endodontically treated teeth were included . After primary stratification based on the need for post or no post , teeth were r and omly allotted to test group 1 ( prefabricated glass fiber posts ) , 2 ( custom-made glass fiber posts ) , or 3 ( composite cores without posts ) . The control group was treated with gold alloy-based wrought posts and cast cores .  Success ( original present ) and survival ( present after intervention ) probability lifetime curves , corrected for clustering , were drawn over the entire data set . RESULTS The mean follow-up time was 5.8 years ( range : 0.5 to 7.2 years ) . At 5 years , the success and survival probabilities were 85.2 % and 91.5 % , respectively . Lifetime curves did not show any significant differences between the test and control groups for success ( P = .85 ) or survival ( P = .57 ) . Moreover , no significant differences for success or survival could be found among the four groups ( the three test groups and the control group ) . CONCLUSION After 5 years of follow-up , cast gold and composite post- and -core systems on teeth with ceramic full restorations provided with a ferrule performed equally well
Failures of fiber posts were mainly due to post loss of retention , while metal post failures were mostly related to root fracture , post fracture and crown and /or post loss of retention .
In conclusion , metal and fiber posts present similar clinical behavior at short to medium term follow-up .
Remaining dental structure and ferrule increase the survival of restored pulpless teeth .
The aim of this systematic review was to compare the clinical performance and failure modes of teeth restored with intra-radicular retainers .