title: Comparison of the caries-preventive effect of a glass ionomer sealant and fluoride varnish on newly erupted first permanent molars of children with and without dental caries experience.
abstract: OBJECTIVE
  This longitudinal clinic study evaluated the effect of a glass ionomer sealant (GIS) and a fluoride varnish (FV) in the prevention of dental decay on newly erupted permanent molars of children with and without caries experience.
  
  
  METHODS
  Eighty children, aged 6-8 years, with all four newly erupted first permanent molars, were divided into two groups. Group 1 consisted of 53 children without caries experience and group 2 consisted of 27 children with dental caries experience. Permanent molars of the right side were sealed with GIS and the fluoride varnish was applied on the other two permanent first molars. Evaluation of GIS retention and the effectiveness of both materials in the prevention of dental caries were performed after 6, 12 and 18 months.
  
  
  RESULTS
  After 18 months, of the 299 teeth, 271 (91%) showed no caries lesions and 28 presented caries lesions (9%). Teeth sealed with GIS had more carious lesions (15) than teeth with fluoride varnish (13). Most of the teeth (70%) that presented carious lesions were in group 2. Of the 138 sealed teeth, only one showed GIS to be totally present, 95 were partially present and 42 teeth were absent.
  
  
  CONCLUSIONS
  The caries-preventive effect was very similar between both treatments. The presence of dental caries prevailed in the children with caries experience.
authors.affiliation: Department of Social and Pediatric Dentistry, School of Dentistry at Araçatuba, UNESP, Univ Estadual Paulista, São Paulo, Brazil.
authors.forename: Daniela Cristina
authors.initials: DC
authors.lastname: de Oliveira
authors.forename: Robson Frederico
authors.initials: RF
authors.lastname: Cunha
mesh_terms: D000180:Acrylic Resins; D016022:Case-Control Studies; D002648:Child; D003731:Dental Caries / Q000517:prevention & control*; D005459:Fluorides / Q000008:administration & dosage*; D006801:Humans; D008963:Molar; D010895:Pit and Fissure Sealants; D012822:Silicon Dioxide
chemical_list: D000180:Acrylic Resins; D010895:Pit and Fissure Sealants; C015897:glass ionomer; D012822:Silicon Dioxide; D005459:Fluorides