title: Effect of different surface pre-treatment methods on the microleakage of two different self-adhesive composites in Class V cavities.
abstract: OBJECTIVE
  To evaluate the effect of different surface pre-treatment methods on the microleakage of self-adhesive flowable composites (SAFCs) in comparison with a conventional flowable composite applied with an etch-and-rinse adhesive system.
  
  
  METHODS
  One hundred and thirty-five standardised Class V cavities were randomly divided into nine groups: (1) three-step etch-and-rinse adhesive (Optibond FL - Kerr, Orange, USA)/flowable composite (Clearfil Majesty Flow - Kuraray, Tokyo, Japan) (E&Ra/flowC); (2) Fusio Liquid Dentin (Pentron Clinical, Orange, USA); (3) Er:YAG Laser/Fusio Liquid Dentin (Er&Las/Fusio Liquid Dentin); (4) Phosphoric Acid/Fusio Liquid Dentin (PhosA/Fusio Liquid Dentin); (5) Polyacrylic Acid/Fusio Liquid Dentin (PolyA/Fusio Liquid Dentin); (6) Vertise Flow (Kerr, Orange, USA); (7) Er:YAG Laser/Vertise Flow (Er&Las/Vertise Flow); (8) Phosphoric Acid/Vertise Flow (PhosA/Vertise Flow); (9) Polyacrylic Acid/Vertise Flow (PolyA/Vertise Flow). After thermocycling and immersion in a 0.5% basic fuchsin, the restorations were evaluated under a stereomicroscope (n = 30). The data were statistically analysed (α = 0.05).
  
  
  RESULTS
  Both SAFCs showed higher leakage scores than E&Ra/flowC in enamel and dentin (p < 0.05). Vertise Flow showed lower leakage than Fusio Liquid Dentin in dentin (p < 0.05). Pre-phosphoric acid etching reduced the microleakage scores of Fusio Liquid Dentin in both enamel and dentin (p < 0.05), while all surface pre-treatment methods led to a significant reduction in the microleakage scores of Vertise Flow at the enamel margin (p < 0.05).
  
  
  CONCLUSIONS
  Pre-etching of enamel and dentin by phosphoric acid may be satisfactory in improving the sealing ability of Fusio Liquid Dentin, while phosphoric acid or polyacrylic acid etching or laser irradiation may be used to improve the adhesion of Vertise Flow to enamel.
authors: Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey, Department of Restorative Dentistry.
authors: E U
authors: EU
authors: Celik
authors: Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey, Department of Pediatric Dentistry.
authors: E
authors: E
authors: Kucukyilmaz
authors: Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey, Department of Pediatric Dentistry.
authors: S
authors: S
authors: Savas
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000180:Acrylic Resins / Q000737:chemistry; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003737:Dental Cavity Preparation / Q000145:classification*; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000145:classification*; D003764:Dental Materials / Q000737:chemistry*; D003804:Dentin / Q000648:ultrastructure; D006801:Humans; D053844:Lasers, Solid-State; D008422:Materials Testing; D010756:Phosphoric Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012394:Rosaniline Dyes; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors
chemical_list: D000180:Acrylic Resins; D004396:Coloring Agents; D003188:Composite Resins; D003764:Dental Materials; C469607:OptiBond FL; D010756:Phosphoric Acids; D019279:Resin Cements; D012394:Rosaniline Dyes; C541508:clearfil majesty; C588378:fusio; C581746:vertise flow; C006903:carbopol 940; C025485:basic fuchsin; C030242:phosphoric acid