Conclusions The most frequently reported failures in the available studies were as follows : fiber post debonding , loss of retention of single crowns , and marginal gaps .
Less frequently , chippings and fractures were recorded in SCs .
Objective The present systematic review aim ed at assessing data from the literature on endodontic and prosthetic complications in endodontically treated teeth restored with fiber posts and single crowns ( SCs ) or fixed dental prostheses ( FDPs ) .
Fracture resistance of roots prosthetically restored with intra-radicular posts of different lengths.
The purpose of this study was to assess the fracture resistance of roots that were prosthetically restored with intra-radicular posts  of different lengths . Forty-five bovine incisors were sectioned 17 mm from their apices , endodontically treated and r and omly divided into three experimental groups : GI , fibreglass posts luted at a depth of 12 mm ; GII , 8 mm and GIII , 4 mm . All posts were luted with dual resin cement . Resin composite cores were prepared with st and ardized measurements , and all teeth were restored with metal crowns . The sample s were su bmi tted to the fracture resistance test in a universal testing machine , at an angle of 135 degrees and speed of 0.5 mm min(-1 ) , until fracture occurred . The data , in MPa , were su bmi tted to the analysis of variance ( anova ) followed by Tukey 's test ( alpha = 0.01 ) . No statistically significant difference ( P > 0.01 ) was found between GI ( 129.72 + /- 12.14 ) and GII ( 154.3 + /- 12.08 ) , which presented the highest fracture resistance values . Group GIII ( 100.5 + /- 8.07 ) showed lower fracture resistance ( P < 0.01 ) when compared with GI and GII . Within the limitations of this study , it was concluded that the post lengths influenced the fracture resistance of prosthetically restored roots . These results suggest that it is not necessary to perform excessive intra-radicular post-space preparation to improve the fracture resistance of roots
Conclusions The most frequently reported failures in the available studies were as follows : fiber post debonding , loss of retention of single crowns , and marginal gaps .
Less frequently , chippings and fractures were recorded in SCs .
Objective The present systematic review aim ed at assessing data from the literature on endodontic and prosthetic complications in endodontically treated teeth restored with fiber posts and single crowns ( SCs ) or fixed dental prostheses ( FDPs ) .