J Adv Prosthodont.  2015 Jun;7(3):249-256. 10.4047/jap.2015.7.3.249.

Effect of atmospheric plasma versus conventional surface treatments on the adhesion capability between self-adhesive resin cement and titanium surface

• Seker E
• Kilicarslan MA
• Deniz ST
• Mumcu E
• Ozkan P

• KMID: 2284711
• DOI: http://doi.org/10.4047/jap.2015.7.3.249

Abstract

PURPOSE
The aim of this study was to evaluate the effects of atmospheric plasma (APL) versus conventional surface treatments on the adhesion of self-adhesive resin cement to Ti-6Al-4V alloy.
MATERIALS AND METHODS
Sixty plates of machined titanium (Ti) discs were divided into five groups (n=12): 1) Untreated (CNT); 2) Sandblasted (SAB); 3) Tribochemically treated (ROC); 4) Tungsten CarbideBur (TCB); 5) APL treated (APL). SEM analysis and surface roughness (Ra) measurements were performed. Self-adhesive resin cement was bonded to the Ti surfaces and shear bond strength (SBS) tests, Ra and failure mode examinations were carried out. Data were analyzed by one-way analysis of variance and chi-squared test.
RESULTS
The lowest SBS value was obtained with CNT and was significantly different from all other groups except for APL. The ROC showed the highest SBS and Ra values of all the groups.
CONCLUSION
It was concluded that the effect of APL on SBS and Ra was not sufficient and it may not be a potential for promoting adhesion to titanium.

Keyword

Titanium; Surface treatment; Non-thermal atmospheric pressure plasma; Micromechanical retention; Self-adhesive resin cement; Shear bond strength

MeSH Terms

Alloys
Plasma Gases
Plasma*
Resin Cements*
Titanium*
Tungsten
Alloys
Plasma Gases
Resin Cements
Titanium
Tungsten

Figure

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  Fig. 1 Making samples with the use of Teflon mold and bonding jig.

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  Fig. 2 Mean ± standard deviation of the shear bond strength (MPa) and surface roughness (µm) values.

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  Fig. 3 Representative SEM photomicrographs of treated Ti surface (×500). (A) Control (CNT)-grinding marks, (B) Sandblasted (SAB) and (C) Rocatec-Plus (ROC)-deep macro cavities and pits coated with micro gaps with irregular, embedded alumina and silica particles, (D) Roughened with tungsten carbide bur (TCB)-irregular corrugated titanium surface, (E) Atmospheric plasma treatment (APL)-a superficially fissured coarse surface with carbon spots.

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  Fig. 4 Stereomicroscope images of failure mode between resin cement and Ti surface: (A) Adhesive failure mode, (B) Cohesive failure mode, (C) Mix failure mode.

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