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Journal List > J Korean Acad Prosthodont > v.53(4) > 1034840

Lee, Kim, Lee, Ahn, Park, and Seo: Evaluation of shear-bond strength between different self-adhesive resin cements with phosphate monomer and zirconia ceramic before and after thermocycling

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 ㎛ Al2O3). One hundred composite resin cylinders were fabricated. Composite cylinders were bonded to the zirconia samples with either Permacem 2.0 (P), ClearfilTM SA Luting (C), Multilink® Speed (M), RelyXTM U200 Automix (R), G-Cem LinkAceTM (G). All bonded specimens were stored in distilled water (37°C) for 24 h and half of them were additionally aged by thermocycling (5°C, 55°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 (α =.05).

Results

Before and after thermocycling, Multilink® 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.

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jkap-53-318f1.tif
Fig. 1.
Zirconia specimen.
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jkap-53-318f2.tif
Fig. 2.
Composite resin cylinder.
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jkap-53-318f3.tif
Fig. 3.
Mean shear bond strength (∗: Statistically significant with P<.05).
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jkap-53-318f4.tif
Fig. 4.
Failure mode before and after thermocycling (-1 : before thermocycling,-2 : after thermocycling).
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jkap-53-318f5.tif
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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jkap-53-318f6.tif
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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Table 1.
Self-adhesive resin cements used in this study
Group Brand name Composition Manufacturer
P Permacem 2.0 Barium glass in a Bis-GMA-based matrix of dental resins, phosphate monomer pigments, additives and catalysts DMG, Hamburg, Germany
C Clearfil TM SA Luting Bis-GMA, TEGDMA, 10-MDP, barium glass, silica, sodium fluoride Kuraray Medical, Tokyo, Japan
M Multilink® Speed Dimethacrylate, ytterbium trifluoride, methacrylate monomer with phosphoric acid group, glass, silicone dioxide Ivoclar Vivadent, Schaan, Liechtenstein
R RelyX TM U200 Methacrylate monomers containing phosphoric acid groups, methacrylate monomers, silanated fillers, initiator components, stabilizer components, rheologic additives, alkaline fillers, pigments 3M ESPE, Neuss, Germany
G G-Cem LinkAce TM Fluoro-alumino-silicate glass, Urethanedimethacrylate, Dimethacrylate, phosphoric ester, silicon dioxide, initiator, inhibitor, pigment GC Coporation, Tokyo, Japan
Table 2.
Mean shear bond strength (MPa) with SD
Group N Mean SD
P-11) 10 10.21 1.36
P-22) 10 9.70 1.57
C-1 10 10.38 1.29
C-2 10 8.65 2.39
M-1 10 13.61 1.45
M-2 10 12.36 2.40
R-1 10 9.69 1.55
R-2 10 8.21 2.45
G-1 10 12.94 1.64
G-2 10 6.26 2.41

1) -1 : Before thermocycling

2) -2 : After thermocycling

Table 3.
The results of Tukey HSD post hoc test (before thermocycling)
(1) Group (2) Groups Mean Difference (1) - (2) Std. Error sig.
P C -1.78 0.65 1.00
M -3.40 0.65 0.00
R 0.52 0.65 0.93
G -2.73 0.65 0.00
C P 0.18 0.65 1.00
M -3.22 0.65 0.00
R 0.69 0.65 0.83
G -2.55 0.65 0.00
M P 3.40 0.65 0.00
C 3.22 0.65 0.00
R 3.92 0.65 0.00
G 0.67 0.65 0.84
R P -0.52 0.65 0.93
C -0.69 0.65 0.83
M -3.92 0.65 0.00
G -3.25 0.65 0.00
G P 2.73 0.65 0.00
C 2.55 0.65 0.00
M -0.67 0.65 0.84
R 3.25 0.65 0.00

No significant difference: P>.05

Table 4.
The results of Tukey HSD post hoc test (after thermocycling)
(1) Group (2) Groups Mean Difference (1) - (2) Std. Error sig.
P C 1.05 1.01 0.84
M -2.66 1.01 0.08
R 1.49 1.01 0.59
G 0.36 1.01 0.01
C P -1.05 1.01 0.84
M -3.71 1.01 0.01
R 0.44 1.01 0.99
G 2.39 1.01 0.15
M P 2.66 1.01 0.08
C 3.71 1.01 0.01
R 4.15 1.01 0.00
G 6.10 1.01 0.00
R P -1.49 1.01 0.59
C -0.44 1.01 0.99
M -4.15 1.01 0.00
G 1.95 1.01 0.32
G P -3.44 1.01 0.01
C -2.39 1.01 0.15
M -6.10 1.01 0.00
R -1.95 1.01 0.32

No significant difference: P>.05

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