title: Clinical evaluation of a polyacid-modified resin used as a fissure sealant: 48-month results.
abstract: OBJECTIVE
  To evaluate the incidence of occlusal caries and the rates of retention using Variglass VLC (polyacid-modified resin) as an occlusal sealant.
  
  
  METHODS
  The sample consisted of 185 school children (6-8 yr-old), with sound unsealed permanent first molars. Sealants were applied on the upper and lower first molars from a randomly chosen hemiarch (N=370 teeth). The follow-up was conducted at 6, 12 and 48 months examining 343 (93%), 290 (78%) and 187 (51%) teeth, respectively.
  
  
  RESULTS
  After 48 months, total retention of the material was noted in only 5% of the teeth. The presence of sealant in 2/3 and 1/3 of the pit extension was verified in 8% and 14% of the teeth, respectively, while 73% of the sealed teeth had no sealant present on the occlusal surface. Caries incidence, measured by the presence of dental caries and restorations, was 16% representing an annual increase of 4%.
authors.affiliation: Department of Community Dentistry, School of Dentistry, University of Campinas, Piracicaba, São Paulo, Brazil. apereira@fop.unicamp.br
authors.forename: A C
authors.initials: AC
authors.lastname: Pereira
authors.forename: V
authors.initials: V
authors.lastname: Pardi
authors.forename: F L
authors.initials: FL
authors.lastname: Mialhe
authors.forename: M C
authors.initials: MC
authors.lastname: Meneghim
authors.forename: R T
authors.initials: RT
authors.lastname: Basting
authors.forename: C W
authors.initials: CW
authors.lastname: Werner
mesh_terms: D000180:Acrylic Resins / Q000627:therapeutic use; D002648:Child; D020770:Compomers / Q000627:therapeutic use*; D004245:DMF Index; D001840:Dental Bonding; D003731:Dental Caries / Q000209:etiology; D003793:Dental Restoration, Permanent; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000627:therapeutic use; D006801:Humans; D008963:Molar; D010895:Pit and Fissure Sealants / Q000627:therapeutic use*; D013223:Statistics as Topic
chemical_list: D000180:Acrylic Resins; D020770:Compomers; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; C081982:VariGlass VLC