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Updated: Jan 16, 2026
07:42
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
764
Effect of Resin Coating on Dentin Bond Strength Under Immediate and Delayed Cementation Protocols
Rena Takahashi1, Siqi Zeng1, Yuna Kanamori2
1Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Tokyo, Japan.
Summary
Resin coatings with TK-100B (a novel single-bottle adhesive) and Clearfil SE Bond 2 enhance dentin bond strength. A 1-week delay in cementation reduced bond strength for Hybrid Coat II and Clearfil SE Bond 2, but not TK-100B.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials
Background:
- Resin coatings can influence the bond strength of dental adhesives.
- Understanding the impact of cementation timing on resin-coated dentin is crucial for clinical success.
Purpose of the Study:
- To evaluate the effect of resin coatings on dentin bond strength.
- To compare immediate versus delayed cementation protocols (1-week delay) for resin-coated specimens.
Main Methods:
- 120 dentin specimens were divided into four groups: non-coated, TK-100B, Hybrid Coat II, and Clearfil SE Bond 2.
- Three groups were resin-coated; all were tested with immediate and delayed (1-week) cementation after provisionalization.
- Shear bond strength testing was performed, and data were analyzed using two-way ANOVA and Tukey's post hoc test.
Main Results:
- TK-100B and Clearfil SE Bond 2 showed significantly higher bond strengths than the non-coated group for both cementation schedules.
- Delayed cementation decreased bond strengths for Hybrid Coat II and Clearfil SE Bond 2, but not for the non-coated group or TK-100B.
- Failure analysis indicated most failures occurred at the resin-cement interface in resin-coated groups.
Conclusions:
- TK-100B and Clearfil SE Bond 2 effectively enhance dentin bonding strength.
- A 1-week delay in cementation negatively impacts the bond strength of Hybrid Coat II and Clearfil SE Bond 2, highlighting material-specific time-dependent effects.
- The novel single-bottle adhesive TK-100B demonstrates robust performance, maintaining high bond strength even with delayed cementation.
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