Microleakage of indirect composite inlays. An in vitro comparison with the direct technique.
Microleakage occurring around directly and indirectly made class-II composite restorations was evaluated on extracted human premolars. Before the evaluation was made, the teeth were thermocycled and stained with an organic dye. Direct class-II composite restorations demonstrated extensive microleakage at their dentin cavosurface margins. Indirect class-II composite inlays luted with a dual-curing composite cement displayed much less microleakage than restorations made using the direct technique. The use of glass-ionomer cement rather than composite cement as the luting material resulted in more microleakage. Rather than being a true microleakage, the leakage of glass-ionomer cement might be the result of a diffusion of the water-soluble organic dye in the water-based cement. The results suggest that the indirect composite technique is superior to the direct technique when it comes to reducing microleakage.
Milleding
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Department of Dental Technology, Faculty of Odontology, University of Göteborg, Sweden.
D000134:Acid Etching, Dental; D000180:Acrylic Resins / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003735:Dental Casting Technique; D003737:Dental Cavity Preparation / Q000145:classification; D003738:Dental Cements / Q000737:chemistry; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000175:diagnosis; D003804:Dentin / Q000648:ultrastructure; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D007284:Inlays; D011108:Polymers / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D014520:Urethane / Q000737:chemistry
D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; D003738:Dental Cements; D005899:Glass Ionomer Cements; D011108:Polymers; D011140:Polyurethanes; C056413:Occlusin; D014520:Urethane