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Comparison of Push-out Bond Strengths According to Relining Procedure and Cement Type on Fiber Post  

Kang, Hyun-Young (Dept. of Conservative Dentistry, Chonbuk National University)
Cho, So-Yeun (Dept. of Conservative Dentistry, Chonbuk National University)
Yu, Mi-Kyung (Dept. of Conservative Dentistry, Chonbuk National University)
Lee, Kwang-Won (Dept. of Conservative Dentistry, Chonbuk National University)
Kim, Kyoung-A (Dept. of Conservative Dentistry, Chonbuk National University)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.27, no.3, 2011 , pp. 253-265 More about this Journal
Abstract
When restoring endodontically treated teeth is the mismatch between fiber post size and post space diameter, the resin cement layer is excessively thick in post space and voids are likely to form in it, thus predisposing to de-bonding. The method to overcome this problem is to reline the fiber post with composite resin. This individual anatomic post improves the adaptation of post to root walls and decreases the resin cement thickness. The purpose of this in vivo study was to evaluate the push-out bond strength of fiber post according to relining procedure and luting agents type used for simplicity of clinical procedure. Forty-two extracted teeth were divides into six groups.(n=7) A1: relined fiber post cemented with Luxacore/all-bons 2, A2: non-relined fiber post cemented with Luxacore/all-bond2, B1: relinind fiber post cemented with Calibra/XP-bond, B2: non-relined fiber post cemented with Calibra/XP-bond, C1: relined fiber post cemented with RelyX Unicem, C2: non-relined fiber post cemented with RelyX Unicem Push-out bond strength was affected by interaction between relining procedure and luting agent type. Relined fiber post presented higher push-out bond strength value than non-relined fiber post and statically significant differences(p<0.05) Cementation with RelyX Unicem showed significantly higher bond strength than other luting agents(p<0.05).
Keywords
Fiber post; relining procedure; push-out bond strength; self-adhesive cement; core material;
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