Source of Support: None, Conflict of Interest: None
Sliver amalgam has been used as a permanent restorative material in dentistry since the 19th century. The advantages of amalgam are its strength, cost effectiveness and less technique sensitivity. However, the principal disadvantage of amalgam is its inability to bond to the tooth structure there by resulting in decreased retention. To overcome this problem amalgam bonding agents are used. They are dual cured, light cured or chemical cured. Each system has its own advantages and disadvantages. This study was done to assess the retentive strength of bonding agents cured by chemical cure, light cure and dual cure. The results of the studies indicated that dual cure had the best retentive strength followed by light cure and chemical cure. Cavity varnish had the least strength.