title: The success rates of a glass ionomer cement and a resin-based fissure sealant placed by fifth-year undergraduate dental students.
abstract: OBJECTIVE
  To evaluate retention and caries prevention of a glass-ionomer cement (GIC) and a resin-based fissure sealant placed by fifth-year undergraduate dental students.
  
  
  METHODS
  The study was conducted according to a split-mouth, randomised clinical trial. Children with at least one pair of caries-free permanent first molars with deep pits and fissures were included in the study. The children were selected from a population that had a high risk for dental caries. Sealant materials were applied by fifth-year undergraduate dental students on 346 fissures of the first permanent molars in 173 children. The ages of the children ranged from 7-15 years (mean 9.4). Two researchers at the clinics supervised all of the procedures. Intra-examiner reproducibility and inter-examiner reproducibility were 0.90 and 0.86, respectively, for the clinical assessment of sealant retention and caries evaluation.
  
  
  RESULTS
  GIC sealants were completely lost in 31.9% and resin-based sealants in 16.6% (p<0.05). The total retention rates of GIC sealants and resin-based sealants were 13.8% and 20.8%, respectively. After 24 months, the caries increment was 3.4% for GIC sealants and 4.8% for resin-based sealants (p>0.05).
  
  
  CONCLUSIONS
  The retention of GIC sealants was markedly inferior to the retention of resin-based sealants; however, GIC when used as a pit and fissure sealant was slightly more effective in preventing occlusal caries.
authors.affiliation: Department of Paediatric Dentistry, University of Gazi, Faculty of Dentistry, 8. Cadde 82.Sokak 06510 Emek Ankara, Turkey.
authors.forename: T
authors.initials: T
authors.lastname: Ulusu
authors.forename: M E
authors.initials: ME
authors.lastname: Odabaş
authors.forename: T
authors.initials: T
authors.lastname: Tüzüner
authors.forename: O
authors.initials: O
authors.lastname: Baygin
authors.forename: H
authors.initials: H
authors.lastname: Sillelioğlu
authors.forename: C
authors.initials: C
authors.lastname: Deveci
authors.forename: F G
authors.initials: FG
authors.lastname: Gökdoğan
authors.forename: A
authors.initials: A
authors.lastname: Altuntaş
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000180:Acrylic Resins / Q000737:chemistry; D000293:Adolescent; D002648:Child; D001840:Dental Bonding; D003731:Dental Caries / Q000517:prevention & control; D003733:Dental Caries Susceptibility; D003750:Dental Fissures / Q000517:prevention & control; D003764:Dental Materials / Q000737:chemistry; D003777:Dental Prophylaxis; D005260:Female; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008689:Methacrylates / Q000627:therapeutic use; D008963:Molar / Q000473:pathology; D010756:Phosphoric Acids / Q000737:chemistry; D010895:Pit and Fissure Sealants / Q000627:therapeutic use*; D019279:Resin Cements / Q000627:therapeutic use*; D013335:Students, Dental; D016896:Treatment Outcome
chemical_list: D000180:Acrylic Resins; D003764:Dental Materials; C407603:Fissurit F; C493186:Fuji VII; D005899:Glass Ionomer Cements; D008689:Methacrylates; D010756:Phosphoric Acids; D010895:Pit and Fissure Sealants; D019279:Resin Cements; C006903:carbopol 940; C030242:phosphoric acid