J Adv Prosthodont.  2013 May;5(2):126-132. 10.4047/jap.2013.5.2.126.

Effects of post surface conditioning before silanization on bond strength between fiber post and resin cement

• Mosharraf
• Ranjbarian P

• KMID: 2284751
• DOI: http://doi.org/10.4047/jap.2013.5.2.126

Abstract

PURPOSE
Post surface conditioning is necessary to expose the glass fibers to enable bonding between fiber post and resin cement. The purpose of the present study was to evaluate the effect of different surface conditioning on tensile bond strength (TBS) of a glass fiber reinforced post to resin cement.
MATERIALS AND METHODS
In this in vitro study, 40 extracted single canal central incisors were endodontically treated and post spaces were prepared. The teeth were divided into four groups according to the methods of post surface treatment (n=10): 1) Silanization after etching with 20% H2O2, 2) Silanization after airborne-particle abrasion, 3) Silanization, and 4) No conditioning (Control). Adhesive resin cement (Panavia F 2.0) was used for cementation of the fiber posts to the root canal dentin. Three slices of 3 mm thick were obtained from each root. A universal testing machine was used with a cross-head speed of 1 mm/minute for performing the push-out tests. Two-way ANOVA and Tukey post hoc tests were used for analyzing data (alpha=0.05).
RESULTS
It is revealed that different surface treatments and root dentin regions had significant effects on TBS, but the interaction between surface treatments and root canal regions had no significant effect on TBS. There was significant difference among H2O2 + Silane Group and other three groups.
CONCLUSION
There were significant differences among the mean TBS values of different surface treatments. Application of hydrogen peroxide before silanization increased the bond strength between resin cements and fiber posts. The mean TBS mean values was significantly greater in the coronal region of root canal than the middle and apical thirds.

Keyword

Resin cements; Dental bonding; Post and core technique; Composite resins; Fiber reinforced; Bond strength

MeSH Terms

Adhesives
Cementation
Collodion
Composite Resins
Dental Bonding
Dental Pulp Cavity
Dentin
Glass
Hydrogen Peroxide
Incisor
Post and Core Technique
Resin Cements
Tooth
Adhesives
Collodion
Composite Resins
Glass
Hydrogen Peroxide
Resin Cements

Figure

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  Fig. 1 Results for tensile bond strength in four experimental groups.

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