J Adv Prosthodont.  2015 Feb;7(1):69-75. 10.4047/jap.2015.7.1.69.

Comparative study of the shear bond strength of various veneering materials on grade II commercially pure titanium

• Lee EY
• Jun SG
• Wright RF
• Park EJ

• KMID: 1974894
• DOI: http://doi.org/10.4047/jap.2015.7.1.69

Abstract

PURPOSE
To compare the shear bond strength of various veneering materials to grade II commercially pure titanium (CP-Ti).
MATERIALS AND METHODS
Thirty specimens of CP-Ti disc with 9 mm diameter and 10 mm height were divided into three experimental groups. Each group was bonded to heat-polymerized acrylic resin (Lucitone 199), porcelain (Triceram), and indirect composite (Sinfony) with 7 mm diameter and 2 mm height. For the control group (n=10), Lucitone 199 were applied on type IV gold alloy castings. All samples were thermocycled for 5000 cycles in 5-55degrees C water. The maximum shear bond strength (MPa) was measured with a Universal Testing Machine. After the shear bond strength test, the failure mode was assessed with an optic microscope and a scanning electron microscope. Statistical analysis was carried out with a Kruskal-Wallis Test and Mann-Whitney Test.
RESULTS
The mean shear bond strength and standard deviations for experimental groups were as follows: Ti-Lucitone 199 (12.11 +/- 4.44 MPa); Ti-Triceram (11.09 +/- 1.66 MPa); Ti-Sinfony (4.32 +/- 0.64 MPa). All of these experimental groups showed lower shear bond strength than the control group (16.14 +/- 1.89 MPa). However, there was no statistically significant difference between the Ti-Lucitone 199 group and the control group, and the Ti-Lucitone 199 group and the Ti-Triceram group. Most of the failure patterns in all experimental groups were adhesive failures.
CONCLUSION
The shear bond strength of veneering materials such as heat-polymerized acrylic resin, porcelain, and indirect composite to CP-Ti was compatible to that of heatpolymerized acrylic resin to cast gold alloy.

Keyword

Titanium; Bond strength; Veneering material; Heat-polymerized acrylic resin; Porcelain; Indirect composite

MeSH Terms

Adhesives
Alloys
Dental Porcelain
Titanium*
Water
Adhesives
Alloys
Dental Porcelain
Titanium
Water

Figure

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  Fig. 1 Diagram of specimen used in this study.

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  Fig. 2 Mean and standard deviation of shear bond strength.

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  Fig. 3 SEM images of the debonded surfaces: (A)-(C) CP-Ti/Lucitone 199, (D)-(F) CP-Ti/Triceram, (G)-(I) CP-Ti/Sinfony, (J)-(L) Gold alloy/Lucitone 199. At higher magnification, the small amount of veneering materials retained in the titanium surfaces suggests mainly adhesive bond failures (arrows) ((A)-(I)). Veneering materials under retentive form is observed in control group (arrow) ((J)-(L)).

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