Dentin-like versus Rigid Endodontic Post: 11-year Randomized Controlled Pilot Trial on No-wall to 2-wall Defects

摘要

Abstract Introduction This is the first long-term randomized controlled trial to evaluate dentin-like glass fiber posts (GFPs) compared with rather rigid titanium posts (TPs) for post-endodontic restoration of severely damaged endodontically treated teeth with 2 or fewer remaining cavity walls. Methods Ninety-one subjects in need of post-endodontic restorations were randomly assigned to receive either a tapered GFP ( n ?=?45) or TP ( n ?=?46). Posts were adhesively luted by using self-adhesive resin cement, followed by composite core build-up and preparation of 2-mm ferrule design. Primary end point was loss of restoration for any reason. Kaplan-Meier curves were constructed, and log-rank test was calculated ( P ? Results After a follow-up of 132?months, 17 GFP and 20 TP restorations survived, and 19 failed (12 GFP, 7 TP). Failure modes for GFP were root fracture ( n ?=?4), core fracture ( n ?=?1), secondary caries ( n ?=?1), endodontic failure ( n ?=?2), extraction because of tooth mobility grade III associated with insufficient design of removable partial denture ( n ?=?1), tooth fracture ( n ?=?1), and changes in treatment plan ( n ?=?2); failure modes for TP were endodontic failure ( n ?=?5), root fracture ( n ?=?1), and 1 extraction for other reasons. Cumulative survival probability was 58.7% for GFP and 74.2% for TP. Conclusions When using self-adhesively luted prefabricated posts, resin composite core build-up, and 2-mm ferrule to reconstruct severely damaged endodontically treated teeth, tooth survival is not influenced by post rigidity. Survival decreased rapidly after 8?years of observation in both groups. ]]>