J Korean Acad Prosthodont.  2008 Oct;46(5):511-519. 10.4047/jkap.2008.46.5.511.

Effects of activators contained in adhesives on dentin bond strengths

• Kang HK
• Shin JH
• Suh KW
• Ryu JJ

• KMID: 2000408
• DOI: http://doi.org/10.4047/jkap.2008.46.5.511

Abstract

STATEMENT OF PROBLEM: An incompatibility between the initiator systems of self-curing composite resins and light-curing adhesives was supposed recently. PURPOSE: The purpose of the study was to evaluate the influence of activators for self/dual bonding on dentin shear bonding strengths. MATERIAL AND METHODS: Fifty human molars were divided into 5 groups. A flat dentin surface was created for each tooth. A self-curing composite resin (Luxacore) was bonded with the following adhesives (n = 10): One-Step, Prime and Bond NT, AdheSE, Prime and Bond NT and AdheSe were also used in combination with activators. Shear bond strengths were measured after 24 hours of water storage. The specimens were loaded in shear in the Instron until failure at a 1 mm/min crosshead speed. Data were compared using one-way ANOVA and Tukey HSD test (alpha = 0.05). RESULTS: The dentin adhesive systems in order of decreasing median bond strength were One-Step > Prime & Bond NT with activator, AdheSe with activator > Prime and Bond NT, AdheSe. Among adhesives, One-Step had the highest bond strength. Prime & Bond NT with activator had higher bond strengths than Prime and Bond NT that was used alone, and so was AdheSe. CONCLUSION: Shear bond strengths were increased in Prime and Bond NT and AdheSe when these were used with activators comparing used without activators. But using activators was not effective clinically comparing One-Step.

Keyword

Activator; Self-cure composite resin; Adhesive; Chemical incompatibility

MeSH Terms

Adhesives
Composite Resins
Dentin
Humans
Molar
Polymethacrylic Acids
Tooth
Water
Adhesives
Composite Resins
Polymethacrylic Acids
Water

Figure

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  Fig. 1. Prepared specimen.

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  Fig. 2. Prepared specimen with resin core.

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  Fig. 3. Shear bond strength. The horizontal line in the box represents the median. The box includes 50%. In box plots, vertical single line represents maximum value and minimum value.

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