Available online 30 July 2022
AbstractObjectiveThe retention of glass fiber post (GFP) is considered a key factor for the long-term success of restorations of endodontically treated teeth. This study aimed to compare the compressive strength of a ceramic crown supported by a GFP using different luting agents.
MethodsForty single-rooted premolars were randomly divided into four groups (n = 10 each): control group (teeth without a GFP), Ketac Cem group (glass ionomer), RelyX ARC group (conventional dual-curing resin), and RelyX U200 group (self-adhesive dual-curing resin). After luting of the posts and placement of all-ceramic crowns made using feldspathic porcelain (Noritake EX-3), they were exposed to thermocycling for 1000 cycles and compressive strength tests. Statistical analysis included Kruskal–Wallis test with Dunn’s multi-comparison test.
ResultsThe Ketac Cem group and RelyX U200 group showed significantly greater fracture resistance to compressive loading than the control group.
ConclusionThis study indicates a possible role of the luting agent used with the GFP in influencing the compressive strength of the restored teeth. In this study, the self-adhesive dual-curing resin and glass ionomer both offered resistance to fractures.
Abbreviationsβcoefficient of regression
PTFEpolytetrafluoroethylene
R2coefficient of determination
KeywordsEndodontics, Fiber post
Glass ionomer
Resin
Root canal
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