title: Early loss of pit and fissure sealant: a clinical and SEM study.
abstract: The rate of early loss of preventive resin restoration and single application of pit and fissure sealant was determined by a clinical survey. The rate of partial and complete sealant loss on the observed surfaces was 14.4% (43/299) at the 3-month recall, with a further loss of 7.0% (12/171) between the 3- and 6-month recalls. Typically, a complete loss of sealant was observed on maxillary molars and on the buccal surface of mandibular molars, while partial loss caused on the occlusal surface of mandibular molars. Scanning electron microscopic observation of in vivo tooth replicas revealed partial gap formations and small fractures of sealant indicating failure or degradation of adhesion. The presence of unetched areas after routine cleaning and acid etching, especially in and around pits and fissures could be a major cause of early sealant loss.
authors.affiliation: Department of Pediatric Dentistry, New York University, School of Dentistry, New York 10010, USA.
authors.forename: M
authors.initials: M
authors.lastname: Futatsuki
authors.forename: K
authors.initials: K
authors.lastname: Kubota
authors.forename: Y C
authors.initials: YC
authors.lastname: Yeh
authors.forename: K
authors.initials: K
authors.lastname: Park
authors.forename: S J
authors.initials: SJ
authors.lastname: Moss
mesh_terms: D001641:Bicuspid / Q000473:pathology; D002648:Child; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003793:Dental Restoration, Permanent / Q000379:methods*; D005500:Follow-Up Studies; D006801:Humans; D008334:Mandible; D008437:Maxilla; D008855:Microscopy, Electron, Scanning; D008963:Molar / Q000473:pathology; D015588:Observer Variation; D010895:Pit and Fissure Sealants; D012117:Resins, Synthetic / Q000737:chemistry; D013499:Surface Properties; D014094:Tooth, Deciduous; D017211:Treatment Failure
chemical_list: D003188:Composite Resins; D010895:Pit and Fissure Sealants; D012117:Resins, Synthetic