Fracture Resistance of New Fiber Post System (Rebilda GT)
Keywords:Fracture resistance, Rebilda GT post, Rebilda fiber post.
Background and Aims: Evaluate and compare the fracture resistance of endodontically treated teeth
restored with bundle glass fiber post and tapered glass fiber post, at 45 degree oblique load.
Materials and Method: Thirty newly extracted single rooted mandibular first premolars were chosen, and
after root canal preparation and obturation, post spaces were prepared. Then the samples were separated into
three groups (n = 10) dependent on the type of restorative method used: group A restored with Rebilda fiber
post [tapered glass fiber post], group B restored with Rebilda post GT post system (bundle glass fiber post),
and group C restored with direct composite resin restoration without a post (control). Using a universal
testing machine with speed of 0.5 mm/minute at 45 degree sloping load which was applied to the restored
teeth, fracture resistance was recorded in Newton.
Results: The results showed that the fracture resistance significantly affected by different post systems (p
< 0.05). The bundle glass fiber post (rebilda Gt) showed highest fracture resistance than the other groups.
Conclusion: Rebilda GT post (bundle glass fiber system) showed higher fracture resistance than the Rebilda
fiber post (tapered glass fiber post) and control group respectively
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