title: The effect of polishing systems on microleakage of tooth-coloured restoratives. Part 2: composite and polyacid-modified composite resins.
abstract: The purpose of this in vitro study was to investigate the effect of polishing systems on the microleakage of composite and polyacid-modified composite resins. Class V cavities were prepared at the cemento-enamel junction of 80 freshly extracted posterior teeth. The prepared teeth were randomly divided into two groups and restored with conventional or polyacid-modified composite resins. The restored teeth were stored in distilled water at 37 degrees C for 1 week after removal of excess restorative with diamond finishing burs. The restored teeth were then divided into four groups of ten and finished/polished using the following systems: Two Striper micron finishing system (MFS), Sof-Lex XT (Sof-Lex), Enhance composite finishing and polishing system (Enhance), and Shofu composite finishing kit (Shofu). The finished restorations were subjected to dye penetration testing. Results showed that the microleakage resistance at both enamel and dentin margins of composite and polyacid-modified composite resins are not significantly affected by the different polishing systems.
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, National University of Singapore. rsdyapuj@nus.edu.sg
authors.forename: A U
authors.initials: AU
authors.lastname: Yap
authors.forename: M L
authors.initials: ML
authors.lastname: Wong
authors.forename: A C
authors.initials: AC
authors.lastname: Lim
mesh_terms: D000269:Adhesives / Q000737:chemistry; D003116:Color; D004396:Coloring Agents; D020770:Compomers / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D003737:Dental Cavity Preparation / Q000145:classification; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000145:classification*; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000295:instrumentation / Q000379:methods*; D003793:Dental Restoration, Permanent; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D019237:Tooth Cervix / Q000648:ultrastructure; D015040:Zirconium / Q000737:chemistry
chemical_list: D000269:Adhesives; D004396:Coloring Agents; D020770:Compomers; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; C088486:Dyract; D008689:Methacrylates; D017640:Silicates; C083568:Z100 composite resin; D012822:Silicon Dioxide; D015040:Zirconium