Operative and restorative dentists have tended to prefer 1-step universal adhesives over other adhesives because of their simplified application and flexibility to be used with etch-and-rinse, self-etch, or selective etch techniques. The Japanese oral health care materials company, GC Corporation, has developed a 2-step universal adhesive that has the same degree of flexibility as 1-step universal adhesives.

GC Corporation awarded Akimasa Tsujimoto, associate professor of operative dentistry, a $14K grant to evaluate the fatigue bond strength to enamel and dentin of this new 2-step universal adhesive, G2-Bond Universal.

Given that it has the same degree of flexibility, if also enhances the bond stability with enamel and dentin, it may be a better option for dentists than current projects on the market. Tsujimoto will compare GC Corporation’s product to other commonly used adhesives—including 1-step universal adhesives, other 2-step adhesives, and a 3-step adhesive. In particular, he will evaluate the fatigue bond strength in relation to both enamel and dentin for these adhesives using both etch-and-rinse and self-etch modes (as appropriate).

Typical bond strength with static load is measured using a test that pushes the bond until it breaks. This is important and valuable, but it also misses the impact of force repeatedly applied and then removed over time. Testing for fatigue bond strength is designed to simulate this experience, and ensures that a bond will do better in ordinary life situations.

Tsujimoto is a collegiate leader in securing industry-supported grants, and the College of Dentistry is excited to partner with industry leaders both to meet the needs of industry and to improve clinical practice.