title: Effect of substrate age on microleakage of dentine adhesive agents.
abstract: The present investigation was performed to determine the effect of substrate age on the microleakage of two new dentine adhesive agents. Class 5 preparations were placed at the cemento-enamel junctions of two groups of extracted human molar teeth which had been stored in water for less than 3 months or for approximately 18 months. Silux Plus was used to restore cavities that had been primed with either Scotchbond 2 or GLUMA. The restored teeth were thermally stressed for 100 temperature cycles and placed in a dye solution for 24 h. Leakage was measured under a microscope at X50 magnification. Under the experimental conditions, there was no significant difference in microleakage which could be attributed to the two different post-extraction tooth storage periods.
authors.affiliation: Department of Primary Patient Care, School of Dentistry, University of Louisville, KY 4092.
authors.forename: G A
authors.initials: GA
authors.lastname: Crim
mesh_terms: D000447:Aldehydes; D003188:Composite Resins; D001840:Dental Bonding / Q000379:methods; D003738:Dental Cements; D003763:Dental Leakage; D003799:Dental Stress Analysis; D003804:Dentin; D005976:Glutaral; D006801:Humans; D011109:Polymethacrylic Acids; D019279:Resin Cements; D013997:Time Factors
chemical_list: D000447:Aldehydes; D003188:Composite Resins; D003738:Dental Cements; D011109:Polymethacrylic Acids; D019279:Resin Cements; C041330:Scotchbond; C044372:Gluma; D005976:Glutaral