Push-out bond strength of luting agents to fibre-reinforced post: an in vitro study

Yahya, N. A. and Lui, J. L. and Chong, K. W. F. and Lim, C. M. and Abu Kasim, N. H. and Radzi, Z. (2008) Push-out bond strength of luting agents to fibre-reinforced post: an in vitro study. 4th Kuala Lumpur International Conference on Biomedical Engineering 2008, Vols 1 and 2, 21 (1 - 2). pp. 341-345. ISSN 1680-0737 978-3-540-69138-9,

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The objective of this study was to investigate the effect of various luting agents 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 (TM) (Bisco,Inc. Schaumburg, IL, USA) were cemented using four luting agents: Group A (control): Elite 1000 Zinc phosphate (GC Corp, Japan), Group B: Calibra (TM) Esthetic Resin Cement (Dentsply Caulk, USA), Group C: RelyX ARC Adhesive Resin (3M ESPE), Group D: RelyX Unicem Aplicap (3M ESPE). Each roots were 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 were analyzed using SPSS version 14.0. The mean bond strength of Group A to Aestheti-Plus (TM) 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=.001). Post-hoc Bonferroni test revealed 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 (TM) post to root canal dentine was highest when cemented with RelyX Unicem followed by Elite 100, Calibra and RelyX ARC. However, the bond strengths of Calibra and RelyX Unicem were not significantly different from Elite 100 (R).

Item Type: Article
Additional Information: Associate Prof. Dr. Noor Hayaty Binti Abu Kasim Department of Conservative Dentistry, Faculty of Dentistry Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Fibre Post; Luting Agents; Bond Strength; Push-out Test Endodontically Treated Teeth; Root-canal Walls; Resin Cements; Dentin; Systems; Microtensile; Microleakage; Retention; Adhesion; Efficacy
Subjects: R Medicine
R Medicine > R Medicine (General)
R Medicine > RK Dentistry
Divisions: Faculty of Dentistry > Dept of Conservative Dentistry
Depositing User: Associate Prof. Dr. Noor Hayaty Abu Kasim
Date Deposited: 04 Jan 2012 03:08
Last Modified: 18 Jan 2012 09:07
URI: http://eprints.um.edu.my/id/eprint/2329

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