title: Microleakage of new all-in-one adhesive systems on dentinal and enamel margins.
abstract: OBJECTIVE
  The aim of this study was to compare the microleakage of new all-in-one adhesive systems on enamel and dentin margins with that of a conventional total-etch system.
  
  
  METHODS
  Thirty buccal Class V cavities were prepared with enamel and dentin margins in 30 bovine teeth and randomly divided into three groups of 10 specimens each. Group 1 was bonded with Etch & Prime, group 2 with Prompt L-Pop, and group 3 with 35% phosphoric acid plus Prime & Bond 2.1. After being stored in an environment of 100% humidity for 24 hours, the teeth were immersed in a 50% silver nitrate solution for 24 hours and then put in a developing solution for 15 minutes. The specimens were sectioned vertically and buccolingually, and microleakage was evaluated on a scale of 0 to 3.
  
  
  RESULTS
  For the enamel margin, statistical analysis revealed that there was no significant difference between groups 1 and 2 or groups 1 and 3 but that there was a statistically significant difference between groups 2 and 3. Statistical analysis revealed no significant difference among the groups in dentinal microleakage.
  
  
  CONCLUSIONS
  Among the three adhesive systems used in this study, Prompt L-Pop provided the least microleakage in enamel; however, there was no statistically significant difference among the groups on dentin margins.
authors.affiliation: Department of Operative Dentistry, Rio de Janeiro State University, Rua Barata Ribeiro 692/805, Copacabana 22051-000, Rio de Janeiro, Rio de Janeiro, Brazil. danielsonpontes@hotmail.com
authors.forename: Danielson Guedes
authors.initials: DG
authors.lastname: Pontes
authors.forename: Adriana Tavares
authors.initials: AT
authors.lastname: de Melo
authors.forename: Antônio Fernando
authors.initials: AF
authors.lastname: Monnerat
mesh_terms: D000096:Acetone; D000818:Animals; D002417:Cattle; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel / Q000382:microbiology; D003763:Dental Leakage / Q000517:prevention & control*; D003804:Dentin / Q000382:microbiology; D017220:Dentin-Bonding Agents; D011756:Diphosphates; D000431:Ethanol; D008689:Methacrylates; D011109:Polymethacrylic Acids; D011897:Random Allocation; D019279:Resin Cements; D018709:Statistics, Nonparametric
chemical_list: D017220:Dentin-Bonding Agents; D011756:Diphosphates; C121187:Etch&Prime; D008689:Methacrylates; D011109:Polymethacrylic Acids; C408584:Prompt L-Pop; D019279:Resin Cements; C444444:prime and bond 2.1; D000096:Acetone; D000431:Ethanol