Superficial dye penetration of two conventional ionomers used as dental fissures sealants


  • Marcella C. B. Malta Universidade do Estado do Rio de Janeiro
  • Márcia R. T. C. Andrade Universidade Federal Fluminense
  • Mirian de W. S. de Marsillac Universidade do Estado do Rio de Janeiro
  • Luiz H. M. Prates Universidade Federal de Santa Catarina
  • Ricardo de S. Vieira Universidade Federal de Santa Catarina



Glass ionomer cements, Pit and fissure sealants, Materials testing


Objective: This study aimed to evaluate surface dye penetration of two conventional glass ionomer cements (GIC), one of them a high viscous ionomer. Methods: 20 standard disk samples measuring 2 mm thick and 4 mm in diameter were made for each conventional GIC. The high viscous ionomer was used as the control (Group 1). Samples were embedded in wax and submitted to pH cycling for 7 days simulating a high cariogenic challenge in a kiln (37ºC). All samples were brushed with an extra-soft bristles infant toothbrush to mimic oral hygiene after exposure to a demineralizing solution for 6 hours. The samples were immersed in a 1% methylene blue solution for 2 hours at the end of cycling. The Mann-Whitney Rank Sum Test was used to analyze the difference between the two GIC. Results: All samples disclosed a superficial dye penetration of 0.6 to 1.5 mm depth. There was no statistical d ifference b etween t he G IC t ested ( p = 0.883). Conclusion: Both GIC tested in this study exhibited superficial dye penetration to depths of at least until their superficial third.


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Author Biographies

Marcella C. B. Malta, Universidade do Estado do Rio de Janeiro

Department of Community and Preventive Dentistry, School of Dentistry of the State University of Rio de Janeiro (FOUERJ), Rio de Janeiro, RJ, Brazil

Márcia R. T. C. Andrade, Universidade Federal Fluminense

Department of Pediatric Dentistry, School of Dentistry, Health Institute of the Federal University Fluminense (UFF), Nova Friburgo, RJ, Brazil

Mirian de W. S. de Marsillac, Universidade do Estado do Rio de Janeiro

Department of Community and Preventive Dentistry, School of Dentistry of the State University of Rio de Janeiro (FOUERJ), Rio de Janeiro, RJ, Brazil

Luiz H. M. Prates, Universidade Federal de Santa Catarina

Department of Stomatology, Dental School of the Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil

Ricardo de S. Vieira, Universidade Federal de Santa Catarina

Department of Stomatology, Dental School of the Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil


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Original Research