title: Examination of a resin-modified glass-ionomer material as a pit and fissure sealant.
abstract: The purpose of this in vitro study was to examine the effect of various powder-liquid ratios of an experimental resin-modified glass-ionomer polymer cement on dye penetration when the cement was used as a pit and fissure sealant. Eighty extracted human third molars were randomly assigned to one of four pit and fissure sealant conditions: a resin-based sealant or one of three variations in powder-liquid ratios (1.4:1.0, 1.8:1.0, and 2.0:1.0) of an experimental, light-activated, resin-modified glass-ionomer cement. After sealant placement, the teeth were thermocycled and immersed in methylene blue dye. The teeth were sectioned, and the extent of dye penetration along the sealant-enamel interface was measured linearly. The resin-sealed occlusal fissures showed statistically significantly less dye penetration than did the three powder-liquid ratios of the experimental resin-modified glass-ionomer-cement sealant.
authors.affiliation: Department of General Dentistry, Lackland Air Force Base, Texas, USA.
authors.forename: L M
authors.initials: LM
authors.lastname: Johnson
authors.forename: E S
authors.initials: ES
authors.lastname: Duke
authors.forename: J
authors.initials: J
authors.lastname: Camm
authors.forename: C B
authors.initials: CB
authors.lastname: Hermesch
authors.forename: D J
authors.initials: DJ
authors.lastname: Buikema
mesh_terms: D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D003763:Dental Leakage / Q000517:prevention & control*; D004339:Drug Compounding; D005069:Evaluation Studies as Topic; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D010895:Pit and Fissure Sealants / Q000737:chemistry*; D011897:Random Allocation; D014783:Viscosity
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants