J Korean Acad Prosthodont.  2015 Oct;53(4):318-324. 10.4047/jkap.2015.53.4.318.

Evaluation of shear-bond strength between different self-adhesive resin cements with phosphate monomer and zirconia ceramic before and after thermocycling

• Lee JH
• Kim MK
• Lee JJ
• Ahn SG
• Park JM
• Seo JM

• KMID: 2118803
• DOI: http://doi.org/10.4047/jkap.2015.53.4.318

Abstract

PURPOSE
This study compared shear bond strengths of five self-adhesive cements with phosphate monomer to zirconium oxide ceramic with and without airborn particle abrasion.
MATERIALS AND METHODS
One hundred zirconia samples were air-abraded (50 microm Al2O3). One hundred composite resin cylinders were fabricated. Composite cylinders were bonded to the zirconia samples with either Permacem 2.0 (P), Clearfil(TM) SA Luting (C), Multilink(R) Speed (M), RelyX(TM) U200 Automix (R), G-Cem LinkAce(TM) (G). All bonded specimens were stored in distilled water (37degrees C) for 24 h and half of them were additionally aged by thermocycling (5degrees C, 55degrees C, 5,000 times). The bonded specimens were loaded in shear force until fracture (1 mm/min) by using Universal Testing Machine (Model 4201, Instron Co, Canton, MA, USA). The failure sites were inspected under field-emission scanning electron microscopy. The data was analyzed with ANOVA, Tukey HSD post-hoc test and paired samples t-test (alpha=.05).
RESULTS
Before and after thermocycling, Multilink(R) Speed (M) revealed higher shear-bond strength than the other cements. G-Cem LinkAce(TM) (G) showed significantly lower bond strengths after thermocycling than before treatment (P<.05), but the other groups were not significantly different (P>.05).
CONCLUSION
Most self-adhesive cements with phosphate monomer showed high shear bond strength with zirconia ceramic and weren't influenced by thermocycling, so they seem to valuable to zirconia ceramic bonding.

Keyword

Self-adhesive resin cements; Phosphate monomer; Zirconia ceramic; Shear bond strength; Thermocycling

MeSH Terms

Ceramics*
Microscopy, Electron, Scanning
Resin Cements*
Water
Zirconium
Ceramics
Resin Cements
Water
Zirconium

Figure

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  Fig. 1. Zirconia specimen.

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  Fig. 2. Composite resin cylinder.

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  Fig. 3. Mean shear bond strength (∗: Statistically significant with P<.05).

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  Fig. 4. Failure mode before and after thermocycling (-1 : before thermocycling,-2 : after thermocycling).

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  Fig. 5. Scanning electron microscope image of zirconia surface (×5,000 magnification).(A) polished with 1 ㎛ diamond paste, (B) sandblasting with 50 ㎛ Al2 O3.

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  Fig. 6. Scanning electron microscope image of zirconia surface after shear-bond strength test (×2,000 magnification, -1: before thermocycling, -2: after thermocycling). (A) P: Permacem 2.0, (B) C: Clearfil TM SA Luting, (C) M: Multilink® Speed,(D) R: RelyX TM U200, (E) G: G-Cem LinkAce TM.

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