title: Marginal microleakage of triage sealant under different moisture contamination.
abstract: OBJECTIVE
  Glass ionomer sealants (GISs) are promoted in pediatric dentistry for their moisture-friendly properties. This study's purpose was to investigate the marginal leakage of a glass ionomer sealant (Fuji Triage) under different moisture environments.
  
  
  METHODS
  Eighty extracted teeth were distributed into 4 groups: (1) control; (2) saliva contamination with 1-second air-thinning; (3) saliva contamination with 10 seconds of air-drying; and (4) saliva contamination with reconditioning. Sealants were placed after contamination. All extracted teeth underwent thermocycling followed by 1% methylene blue dye and distilled water wash. All extracted teeth were then sectioned buccolingually into 3 cross-sections and examined at 60X under a stereomicroscope. Microleakage was assessed using a dye penetration scoring system (score=0-3). Data were analyzed with Kruskal-Wallis and Mann-Whitney tests.
  
  
  RESULTS
  The control group showed significantly lower marginal leakage than the other 3 groups (P<.02). There was no statistically significant difference among the 3 contaminated groups (P>.34).
  
  
  CONCLUSIONS
  Fuji Triage sealant had the least marginal leakage under a moisture-controlled environment. When saliva was introduced during the application of the material, microleakage significantly increased. When contamination occurred, 1-second air-thinning of the saliva, 10-second air-drying of the saliva, or reconditioning before sealant application did not show a difference in decreasing microleakage.
authors.affiliation: College of Dental Medicine, Western University of Health Sciences, Pomona, Calif, School of Dental Medicine, Tufts University, Boston, MA, USA. ypeng@westernu.edu
authors.forename: Yawen
authors.initials: Y
authors.lastname: Peng
authors.forename: Paul C
authors.initials: PC
authors.lastname: Stark
authors.forename: Alfred
authors.initials: A
authors.lastname: Rich
authors.forename: Cheen Y
authors.initials: CY
authors.lastname: Loo
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000388:Air; D004396:Coloring Agents; D003743:Dental Enamel / Q000648:ultrastructure; D003763:Dental Leakage / Q000145:classification*; D003890:Desiccation; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D055115:Light-Curing of Dental Adhesives; D008422:Materials Testing; D008751:Methylene Blue; D012464:Saliva, Artificial / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors
chemical_list: D000180:Acrylic Resins; D004396:Coloring Agents; D005899:Glass Ionomer Cements; D012464:Saliva, Artificial; C507316:fuji TRIAGE pink capsule; C006903:carbopol 940; D008751:Methylene Blue