title: Evaluation of fissure sealants retention following four different isolation and surface preparation techniques: four years clinical trial.
abstract: The purpose of this study was to evaluate the retention of fissure sealants, applied with 4 different combinations of isolation and preparation of occlusal surface. In 95 children aged 7-8 years, having all four first permanent molars fully erupted and caries free, a chemically initiated tinted fissure sealant was placed with the following 4 different methods in every child. 1) Tooth 16: Cotton rolls isolation and cleaning of occlusal surface using a bristle brush and non-fluoridated paste. 2) Tooth 26: Rubber dam isolation and mechanical preparation of pits and fissures using a round bur No. 0 in a slow hand-piece. 3) Tooth 36: Rubber dam isolation and cleaning of occlusal surface using a bristle brush and non-fluoridated paste. 4) Tooth 46: Isolation with cotton rolls and mechanical preparation of pits and fissures using a round bur No. 0 in a slow hand-piece. Eighty children were available for re-examination 4 years later (320 teeth). The 4 methods of application showed the following success rates of full retention: 1) 81% 2) 88% 3) 91% 4) 93%. Although statistical analysis of the results revealed only marginal statistically significant difference among the four different methods of application (p = 0.091), there was statistical significant difference (p = 0.031) between methods 1 and 4. No differences were detected among the remaining methods. The present trial revealed best sealant retention using a combination of cotton rolls isolation and mechanical preparation of the occlusal surface.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Paediatric Dentistry Centre IKA, Athens, Greece.
authors.forename: N A
authors.initials: NA
authors.lastname: Lygidakis
authors.forename: K I
authors.initials: KI
authors.lastname: Oulis
authors.forename: A
authors.initials: A
authors.lastname: Christodoulidis
mesh_terms: D016009:Chi-Square Distribution; D002648:Child; D003737:Dental Cavity Preparation / Q000379:methods*; D003777:Dental Prophylaxis; D004311:Double-Blind Method; D005500:Follow-Up Studies; D006801:Humans; D015588:Observer Variation; D010895:Pit and Fissure Sealants; D016733:Rubber Dams; D016896:Treatment Outcome
chemical_list: D010895:Pit and Fissure Sealants