ABSTRACT
This study compared the tensile bond strengths of an unfilled resin bonding agent and four proprietary dentin bonding agents to dentin and acid-etched enamel. Forty-eight hours after bonding, 10 dentin-bonded teeth and 10 enamel-bonded teeth for each material were loaded in tension in an Instron Universal Testing Machine until bond failure. The remaining specimens were stored in a water bath for six months and then tested in a similar manner. At the end of six months, Universal Bond and Tenure (3-step) had bond strengths significantly greater than those of the other agents. All bonding agents, except Tenure (3-step), showed a significant decrease in tensile bond strength to both dentin and enamel after six months (p less than 0.0001).
Subject(s)
Dental Bonding , Dental Cements , Composite Resins , Dental Enamel , Dental Stress Analysis , Dentin , HumansABSTRACT
After one year in function, the crowns appear to wear well, are well-retained, and remain esthetically pleasing. The glass ionomer filling materials show a great potential in restoring severely carious incisors with direct bond crowns.
