Marginal leakage in occlusally loaded, etched, class-II composite resin restorations.
Microleakage was studied in class-II cavities restored with a calcium hydroxide liner and an adhesive system combined with two different posterior composite resins. The restorations were exposed to repeated loading when immersed in dye solution. The teeth were cut, and microleakage along the cavity walls and into dentin was evaluated by light microscopy. Dye penetration at the interface between the cavity and the restoration was recorded in 61% of the loaded and in 30% of the unloaded teeth. The difference between loaded and unloaded was greater for the teeth lined with Life than with Gluma dentin bonding.
Department of Pedodontics, Postgraduate Dental Education Center, Orebro, Sweden.
S A
SA
Lundin
J G
JG
Norén
D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D000269:Adhesives / Q000737:chemistry; D002126:Calcium Hydroxide / Q000627:therapeutic use; D002710:Chlorhexidine / Q000008:administration & dosage; D003188:Composite Resins / Q000737:chemistry*; D003736:Dental Cavity Lining; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000209:etiology* / Q000473:pathology; D003775:Dental Polishing; D003793:Dental Restoration, Permanent / Q000145:classification; D003799:Dental Stress Analysis; D003804:Dentin / Q000648:ultrastructure; D005976:Glutaral / Q000008:administration & dosage / Q000737:chemistry; D006801:Humans; D011109:Polymethacrylic Acids / Q000008:administration & dosage / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D016062:Porosity; D013314:Stress, Mechanical; D013499:Surface Properties; D014520:Urethane / Q000737:chemistry
D000180:Acrylic Resins; D000269:Adhesives; C029012:Composite Dental Resin; D003188:Composite Resins; D011109:Polymethacrylic Acids; D011140:Polyurethanes; C056413:Occlusin; D014520:Urethane; C044372:Gluma; D002126:Calcium Hydroxide; D002710:Chlorhexidine; D005976:Glutaral