J Korean Acad Conserv Dent.  2007 Sep;32(5):426-436. 10.5395/JKACD.2007.32.5.426.

The effect of bonding resin on bond strength of dual-cure resin cements

• Kim DS
• Park SH
• Choi GW
• Choi KK

• KMID: 2175934
• DOI: http://doi.org/10.5395/JKACD.2007.32.5.426

Abstract

The objective of this study is to evaluate the effect of an additional application of bonding resin on the bond strength of resin luting cements in both the light-cure (LC) and self-cure (SC) modes by means of the microTBS tests. Three combinations of One-Step Plus with Choice, Single Bond with Rely X ARC, and One-Up Bond F with Bistite II were used. D/E resin and Pre-Bond resin were used for the additional application. Twelve experimental groups were made. Three mandibular 3rd molars were used in each group. Indirect composite blocks were cemented on the tooth surface. 1 x 1 mm2 dentin-composite beam for microTBS testing were made and tested. When total-etching dentin adhesives were used, an additional application of the bonding resin increased the bond strength (P < 0.05). However, this additional application didn't influence the bond strength of self-etching dentin adhesives (P > 0.05). In conclusion, the results suggest that an additional application of the bonding resin increases bond strength and enhances quality of bonding when using total-etching dentin adhesives.

Keyword

Dentin permeability; Resin-cement; Indirect composite; Nanoleakage; Bonding Resin; Bond Strength

MeSH Terms

Adhesives
Dentin
Dentin Permeability
Molar
Resin Cements*
Tooth
Adhesives
Resin Cements

Figure

• 

  Figure 1 TEM micrographs of OC-LN. A. Nanoleakage appeared both at the top of hybrid layer and within adhesive layer. 'water-tree' structure identified within hybrid layer(pointer). D: dentin, H: hybrid layer, A: adhesive layer, pointer: nanoleakage toward adhesive layer. B. Nanoleakage occurred at the top of hybrid layer. The thickness of adhesive layer was estimated about 8 - 10 µm. T: dentinal tubule, R: resin cement, pointer: nanoleakage formed at the top of hybrid layer.

• 

  Figure 2 TEM micrographs of OC-LY. A. Homogeneous adhesive layer appeared. Nanoleakage was not identified almost. Thickness of adhesive layer was about 14 - 16 µm. D: dentin, H: hybrid layer, A: adhesive layer, R: resin cement, pointer: nanoleakage formed in hybrid layer. B. Magnification of box area in Figure 2-A. Structure of 'water tree' was identified. T: dentinal tubule, pointer: cluster of nanoleakge.

• 

  Figure 3 TEM micrographs of SR-LN. A. High magnification of hybrid layer. 'Water-tree' structure was observed (pointer). At the top of hybrid layer, diffused nanoleakage was identified. D: dentin, H: hybrid layer, A: adhesive layer, Pointer: nanoleakage formed in hybrid layer. B. Nanoleakage formed at the top of hybrid layer (asterisk).

• 

  Figure 4 TEM micrographs of SR-LY. A. Localized concentration of nanoleakage('water-tree'). in hybrid layer(pointer) D: dentin, H: hybrid layer, A: adhesive layer, T: dentinal tubule, pointer: nanoleakage formed in hybrid layer. B. magnification of box area in Figure 2-A. 'Water-tree' structure formed in hybrid layer(pointer). Diffused nanoleakage at the top of the hybrid layer.

• 

  Figure 5 TEM micrographs of OB-LN. A. low magnification of resin cement-dentin interface. Nanoleakage appeared in adhesive-dentin interface. Globular filler was observed in adhesive layer (typical in One-Up Bond F). Representative 'water-tree' structure appeared in adhesive layer (pointer) A: adhesive layer, D: dentin, pointer: nanoleakage from dentin toward adhesive layer. B. Thin hybrid layer was observed (arrow). Unusual nanoleakage pattern appeared inside dentin (pointer). C. High magnification of 'water-tree' structure.

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