title: Resin-modified glass ionomer cement and a resin-based material as occlusal sealants: a longitudinal clinical performance.
abstract: OBJECTIVE
  The aim of this study was to compare retention, effectiveness in caries prevention and superficial characteristics in 2 different materials used as an occlusal sealant.
  
  
  METHODS
  The sample consisted of 108 school children with a mean age of 7.5+/-1.25 years, in which 364 first permanent molars were divided into 6 groups: (1) group 1=Delton + rubber dam (used only for this group); (2) group 2=Delton + cotton rolls; (3) group 3=Prime & Bond 2.1 + Delton; (4) group 4=Vitremer with a 0.25:1 powder/liquid proportion; (5) group 5=Primer + Vitremer with a 0.25:1 powder/liquid proportion; and (6) group 6=Vitremer with a 1:1 powder/liquid proportion.
  
  
  RESULTS
  After 12 months, the total retention rate for groups 6, 1, 2, 3, 4, and 5 was, respectively: 92%, 79%, 67%, 52%, 41% and 12%. For the 3 occlusal areas, retention was: 97%, 92%, 86%, 77%, 69%, and 36%. For the modified criterion, the proportion test showed a statistically significant difference (P<.05) between: groups 1 and 4; groups 6 and 2; and group 3, 4, and 5 with all others groups. Considering the total of 3 areas, there was a statistically significant difference (P<.05) between: groups 1 and 6 with groups 3 and 4; group 2 with group 4; and groups 6 and 5 with the others.
  
  
  CONCLUSIONS
  The resin-modified glass ionomer cement may be a promising alternative as an occlusal sealant.
authors.affiliation: Department of Pediatric Dentistry, Dental School of Federal University of Uberlândia, Uberlândia, Brazil. fasoliv@yahoo.com.br
authors.forename: Fabiana Sodré de
authors.initials: FS
authors.lastname: Oliveira
authors.forename: Salete Moura Bonifácio
authors.initials: SM
authors.lastname: da Silva
authors.forename: Maria Aparecida de Andrade Moreira
authors.initials: MA
authors.lastname: Machado
authors.forename: Maria Francisca Thereza Borro
authors.initials: MF
authors.lastname: Bijella
authors.forename: José Eduardo De Oliveira
authors.initials: JE
authors.lastname: Lima
authors.forename: Ruy César Camargo
authors.initials: RC
authors.lastname: Abdo
mesh_terms: D000096:Acetone / Q000627:therapeutic use; D017438:Bisphenol A-Glycidyl Methacrylate / Q000627:therapeutic use; D002327:Cariostatic Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D003188:Composite Resins / Q000627:therapeutic use; D001840:Dental Bonding; D003731:Dental Caries / Q000145:classification / Q000517:prevention & control; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000627:therapeutic use*; D006801:Humans; D008137:Longitudinal Studies; D010895:Pit and Fissure Sealants / Q000627:therapeutic use*; D011109:Polymethacrylic Acids / Q000627:therapeutic use; D019279:Resin Cements / Q000627:therapeutic use*; D013499:Surface Properties; D014075:Tooth Discoloration / Q000145:classification
chemical_list: D002327:Cariostatic Agents; D003188:Composite Resins; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; D011109:Polymethacrylic Acids; D019279:Resin Cements; C084550:Vitremer; C444444:prime and bond 2.1; D000096:Acetone; D017438:Bisphenol A-Glycidyl Methacrylate