J Korean Acad Prosthodont.  2010 Jan;48(1):8-15. 10.4047/jkap.2010.48.1.8.

Influence of air abrasion and different dentin sealing techniques on microtensile bond strength to dentin

• Kang DH
• Han CH
• Park JW
• Kim S

• KMID: 2000316
• DOI: http://doi.org/10.4047/jkap.2010.48.1.8

Abstract

PURPOSE
The purpose of this study was to evaluate the effect of various methods of dentin bonding agent application and air abrasion pretreatment on microtensile bond strength between dentin and resin, using a self-etching adhesive system. MATERIAL AND METHODS: Thirty freshly extracted human molars were obtained and divided into 6 groups of 5 teeth. A 2-step self etching adhesive system (Clearfil SE Bond) was used for all groups. The control specimens were prepared using a direct immediate bonding technique. The delayed dentin sealing specimens were prepared using an indirect approach without dentin prebonding. The immediate dentin sealing specimens were prepared using dentin prebonding immediately following preparation. Immediate dentin sealing teeth and delayed dentin sealing teeth had provisional restorations using Fermit for two weeks. Then all specimens of each group were divided into two groups of three, depending on air abrasion pretreatment. Composite "crowns" were incrementally built on and specimens were stored in water for 24 hours. All teeth were prepared for a microtensile bond strength test. Bond strength data were analyzed with a one-way ANOVA test, and post hoc comparison was done using the Scheffe's test.
RESULTS
The mean microtensile bond strengths of all groups were not statistically different from each other.
CONCLUSION
When preparing teeth for indirect restorations, IDS and DDS with Clearfil SE bond, have no difference on the microtensile bond strength between dentin and resin. Air abrasion pretreatment did not affect the microtensile bond strength when using IDS and DDS with Clearfil SE bond.

Keyword

Immediate dentin sealing; Delayed dentin sealing; Clearfil SE bond; Microtensile bond strength

MeSH Terms

Adhesives
Dentin
Humans
Molar
Polymethacrylic Acids
Resin Cements
Tooth
Water
Adhesives
Polymethacrylic Acids
Resin Cements
Water

Figure

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  Fig. 1. Flow chart of procedures of each group.

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  Fig. 2. Microtensile test.

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  Fig. 3. Microtensile bond strength (MPa) of each group.

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  Fig. 4. SEM illustrating surface of each specimen. (A, Control; B, C-A; C, IDS; D, IDS-A; magnification × 1,000)

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