Effect of luting cement to push-out bond strength of fibre reinforced post

Authors

  • N.A. Yahya Department of Conservative Dentistry Faculty of Dentistry University of Malaya 50603 Kuala Lumpur Malaysia
  • J.L. Lui Department of Conservative Dentistry Faculty of Dentistry University of Malaya 50603 Kuala Lumpur Malaysia
  • K.W.A. Chong Faculty of Dentistry University of Malaya 50603 Kuala Lumpur, Malaysia
  • C.M. Lim Faculty of Dentistry University of Malaya 50603 Kuala Lumpur, Malaysia
  • N.H. Abu Kasim Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya 50603 Kuala Lumpur
  • Z. Radzi Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya

DOI:

https://doi.org/10.22452/adum.vol15no1.3

Keywords:

push-out bond strength, fibre post

Abstract

he objective of this study was to investigate the effect of various luting cement systems on bond strength of fibre-reinforced posts to root canal dentine. 40 extracted single rooted sound premolar teeth were root filled, decoronated and randomly divided into four groups. Fibre posts, Aestheti- Plus™ (Bisco,Inc. Schaumburg, IL, USA) were cemented using four luting cements: Group A (control): Elite 100® Zinc phosphate (GC Corp, Japan), Group B: Calibra ™ Esthetic Resin Cement (Dentsply Caulk, USA), Group C: RelyX ARC Adhesive Resin (3M ESPE), Group D: RelyX Unicem Aplicap (3M ESPE). Each root was sliced into 2 discs representing the coronal and middle portions of the root canal giving rise to 20 specimens per group. Bond strength was determined using push-out tests and data was analyzed using SPSS version 14.0. The mean bond strength of Group A to Aestheti-Plus™ post was 7.71 MPa (±2.51) and Group B was 5.69 MPa (±3.23). Group C exhibited the lowest mean bond strength, 4.29 MPa (±3.53) while the highest bond strength was obtained from Group D, 7.98 MPa (±2.61). One way ANOVA showed significant interaction between all groups (p=.OOI). Post-hoc Bonferroni test reve;iled that bond strength of Group C was significantly lower compared to Group A (p=.008) and D (p=.004). In conclusion, the mean bond strength of Aestheti- Plus™ post to root canal dentine was highest when cemented with RelyX Unicem resin cement followed by Elite 100® zinc phosphate cement, Calibra and RelyX ARC resin cements. However, the bond strengths of Cali bra and RelyX Unicem resin cements were not significantly different from Elite 100® zinc phosphate cement.

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Published

2008-06-30

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