J Korean Acad Conserv Dent.  2005 May;30(3):158-169. 10.5395/JKACD.2005.30.3.158.

Study on the interface between light-cured glass ionomer base and indirect composite resin inlay and dentin

• Lee SH
• Kim DJ
• Hwang YC
• Oh WM
• Hwang IN

• KMID: 2045241
• DOI: http://doi.org/10.5395/JKACD.2005.30.3.158

Abstract

This study was done to evaluate the shear bond strength between light-cured glass ionomer cement (GIC) base and resin cement for luting indirect resin inlay and to observe bonding aspects which is produced at the interface between them by SEM. Two types of light cured GIC (Fuji II LC Improved, GC Co. Tokyo, Japan and Vitrebond(TM), 3M, Paul, Minnesota, U.S.A) were used in this study. For shear bond test, GIC specimens were made and immersed in 37degrees C distilled water for 1 hour, 24 hours, 1 week and 2 weeks. Eighty resin inlays were prepared with Artglass(R) (Heraeus Kultzer, Germany) and luted with Variolink(R) II (Ivoclar Vivadent, Liechtenstein). Shear bond strength of each specimen was measured and fractured surface were examined. Statistical analysis was done with one-way ANOVA. Twenty four extracted human third molars were selected and Class II cavities were prepared and GIC based at axiopulpal lineangle. The specimens were immersed in 37degrees C distilled water for 1 hour, 24 hours, 1 week and 2 weeks. And then the resin inlays were luted to prepared teeth. The specimens were sectioned vertically with low speed saw. The bonding aspect of the specimens were observed by SEM (JSM-5400(R), Jeol, Tokyo, Japan). There was no significant difference between the shear bond strength according to storage periods of light cured GIC base. And cohesive failure was mostly appeared in GIC. On scanning electron micrograph, about 30 - 120 microm of the gaps were observed on the interface between GIC base and dentin. No gaps were observed on the interface between GIC and resin inlay.

Keyword

Shear bond strength; GIC base; Interface; Resin inlay

MeSH Terms

Dentin*
Glass Ionomer Cements
Glass*
Humans
Inlays*
Japan
Minnesota
Molar, Third
Resin Cements
Tooth
Water
Glass Ionomer Cements
Resin Cements
Water

Figure

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  Figure 1 Comparison of the shear bond strength between light cured glass-ionomer & resin inlay according to storage periods.

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  Figure 2 SEM image of indirect composite restoration based with Fuji II LC Improved after 1 hour. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

• 

  Figure 3 SEM image of indirect composite restoration based with Fuji II LC Improved after 24 hours. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

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  Figure 4 SEM image of indirect composite restoration based with Fuji II LC Improved after 1 week. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

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  Figure 5 SEM image of indirect composite restoration based with Fuji II LC Improved after 2 weeks. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

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  Figure 6 SEM image of indirect composite restoration based with Vitrebond™ after 1 hour. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

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  Figure 7 SEM image of indirect composite restoration based with Vitrebond™ after 24 hours. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

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  Figure 8 SEM image of indirect composite restoration based with Vitrebond™ after 1 week. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×)

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  Figure 9 SEM image of indirect composite restoration based with Vitrebond™ after 2 weeks. A) Original magnification (35 ×) B) Image of the glass-ionomer base/dentin interface (500 ×) C) Image of the composite inlay/glass-ionomer base interface (500 ×) Abbreviation RI: resin inlay G: glass-ionomer cement D: dentin

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