Long-term monitoring of microleakage of cavity varnish and adhesive resin with amalgam.
BACKGROUND
The penetration of oral fluids and bacteria at the interface between the cavity walls and amalgam restorations, which is known as marginal leakage, is one of the problems facing restorative dentistry today. This may cause secondary caries and the irritation of the pulp.


OBJECTIVE
This in vitro study tested and compared the sealing ability of a cavity varnish and a dental adhesive for decreasing the marginal leakage of high copper amalgam fillings by chemical diffusion technique.


METHODS
The samples were randomly divided into three groups. The cavities in the first group were filled with high copper amalgam. In the second and third groups, the cavities were treated with Copalite and Panavia EX adhesives, respectively, before the amalgam fillings were performed. After the periods of 2 hours, 48 hours, 1 week, and 1.5 and 6 months, the amount of calcium diffused through the interface area into the deionized water was measured with inductively coupled plasma.


RESULTS
Six-month results revealed that using a dental adhesive as an interfacial sealer had significant advantages to reduce microleakage when compared with a conventional copal varnish.
Sepetcioglu
F
F
Faculty of Dentistry, Ege University, Izmir, Turkey.
Ataman
B A
BA
D000704:Analysis of Variance; D001641:Bicuspid; D003300:Copper; D003723:Dental Amalgam; D003736:Dental Cavity Lining; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D006801:Humans; D010710:Phosphates; D019279:Resin Cements; D012116:Resins, Plant
D003764:Dental Materials; D017220:Dentin-Bonding Agents; D010710:Phosphates; D019279:Resin Cements; D012116:Resins, Plant; C023806:Copalite; D003300:Copper; D003723:Dental Amalgam; C052304:Panavia EX