title: A comparative study of fluoride-releasing composite resin and glass ionomer materials used as fissure sealants.
abstract: OBJECTIVE
  The objectives of the study were to investigate the clinical use of two fluoride-releasing fissure sealants and to study fluoride release under laboratory conditions.
  
  
  METHODS
  In the clinical part of the study the two materials, FluroShield and Baseline, were applied to matched contralateral caries-free first permanent molars in 86 children aged 7-8 years. In the laboratory study fluoride release from each material was measured using a model cavity system.
  
  
  RESULTS
  After 3 years FluroShield was intact on 70% of teeth. Retention was significantly better on lower molars than upper molars. Baseline was lost from all except two teeth within 6 months. After 3 years, caries had affected four teeth sealed with FluroShield and 24 teeth sealed with Baseline; this difference was highly significant. The laboratory study showed that FluroShield released twice as much fluoride over 9 days than did Baseline. Long term studies using FluroShield showed a small steady fluoride release over 6 months.
  
  
  CONCLUSIONS
  The conclusion of the study was that FluroShield was a much more effective fissure sealant than Baseline. The clinical performance of FluroShield was comparable to that of other inert composite resin sealants and superior to that of fluoride-releasing sealants used previously.
authors.affiliation: School of Dentistry, University of Birmingham, UK.
authors.forename: W P
authors.initials: WP
authors.lastname: Rock
authors.forename: E E
authors.initials: EE
authors.lastname: Foulkes
authors.forename: H
authors.initials: H
authors.lastname: Perry
authors.forename: A J
authors.initials: AJ
authors.lastname: Smith
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate; D016009:Chi-Square Distribution; D002648:Child; D003731:Dental Caries / Q000517:prevention & control*; D005459:Fluorides / Q000008:administration & dosage*; D005899:Glass Ionomer Cements; D006801:Humans; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D011140:Polyurethanes
chemical_list: D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; D011140:Polyurethanes; C086661:Fluoroshield; C074807:BaseLine dental cement; D017438:Bisphenol A-Glycidyl Methacrylate; D005459:Fluorides