Quality assessment of marginal sealing using 7 dentin adhesive systems.
OBJECTIVE
The goal of this investigation was to assess in vitro the quality of marginal sealing of composite-dentin adhesive systems and human dentin.


METHODS
Forty intact human premolars and third molars were extracted from subjects of both sexes and of different ages. After the enamel layer was removed, a Class V cavity was formed on the buccal surface, and a wedge cavity was formed on the lingual surface. These were restored with resin composite materials and their corresponding dentin adhesive systems. The quality of marginal sealing was evaluated by assessing the linear penetration of silver nitrate dye.


RESULTS
The best marginal sealing between composite materials and the cavity walls, in both wedge erosions and Class V cavities, was provided by Scotchbond Multi-Purpose/Valux and Syntac/Helioprogres systems. Dye penetration was slightly greater with the XR-Bond/Herculite, Gluma/Pekafill, and Superlux Universal Bond 2/Superlux Solar systems. The greatest microleakage was observed in Tripton/Opalux and Denthesive/Charisma specimens.


CONCLUSIONS
The use of an adhesive system and the corresponding resin composite does not eliminate microleakage completely when the cavity margins are in dentin.
Zivković
S
S
Clinic for Conservative Dentistry and Endodontics, Faculty of Stomatology, University of Belgrade, Belgrade, Yugoslavia.
D000269:Adhesives / Q000737:chemistry*; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003737:Dental Cavity Preparation / Q000145:classification; D003763:Dental Leakage / Q000175:diagnosis; D003793:Dental Restoration, Permanent / Q000379:methods; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005260:Female; D005976:Glutaral / Q000737:chemistry; D006801:Humans; D008297:Male; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D017063:Outcome Assessment, Health Care; D011109:Polymethacrylic Acids / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012835:Silver Nitrate; D013499:Surface Properties
D000269:Adhesives; C084111:Charisma composite resin; D004396:Coloring Agents; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C084019:Pekafill; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; C083372:Superlux Universal Bond 2; C078484:Syntac dentine adhesive; C069300:Tripton resin; C067319:valux; C029824:urethane dimethacrylate luting resin; C084110:Herculite XR Dentin; C070604:XR Bond; C072653:Helio Progress; C044372:Gluma; D012835:Silver Nitrate; D005976:Glutaral