Rationale for caries inhibition of debonded glass lonomer sealants: An in vitro study

Natalie K. Smith, Kirk T. Morris, Martha Wells, Daranee Tantblrojn, Antheunis Versluis

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Purpose: This study's purpose was to test the hypothesis that, after glass ionomer (Gl) sealant debonding, remaining Gl in the deepest parts of fissures and/or the inhibition of enamel demineralization after artificial caries challenge imparts the residual cariostatic property observed in clinical studies. Methods: Fuji IX Gl sealant was placed on one tooth from 14 matched pairs of noncarious extracted human permanent molars and premolars; the other tooth was the control. Sealed teeth underwent thermocycling (4,000 cycles), and the sealant was manually debonded. The amount of remaining sealant in the fissures was determined using a stereomicroscope. All teeth were placed in lactic acid gel (pH 5.0) at 37 degrees Celsius for three weeks to simulate caries formation. The extent of demineralization was determined using the serial microhardness method on the cross-sectioned specimens at 0.5 mm from the depth of the central fissure. Results: All teeth had Gl retained in the fissures at a microscopic level. Enamel demineralization adjacent to the remaining Gl was not significantly different from the control (t test; P=.88). Conclusions: The residual cariostatic property of glass ionomer sealant is most likely due to a physical barrier of remaining Gl in the fissures rather than a chemical effect on demineralization inhibition.

Original languageEnglish (US)
Pages (from-to)464-467
Number of pages4
JournalPediatric Dentistry
Volume36
Issue number7
StatePublished - Nov 1 2014

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Glass
Tooth
Dental Enamel
Pit and Fissure Sealants
Architectural Accessibility
Bicuspid
Lactic Acid
Gels
In Vitro Techniques
glass ionomer

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Rationale for caries inhibition of debonded glass lonomer sealants : An in vitro study. / Smith, Natalie K.; Morris, Kirk T.; Wells, Martha; Tantblrojn, Daranee; Versluis, Antheunis.

In: Pediatric Dentistry, Vol. 36, No. 7, 01.11.2014, p. 464-467.

Research output: Contribution to journalArticle

Smith, Natalie K. ; Morris, Kirk T. ; Wells, Martha ; Tantblrojn, Daranee ; Versluis, Antheunis. / Rationale for caries inhibition of debonded glass lonomer sealants : An in vitro study. In: Pediatric Dentistry. 2014 ; Vol. 36, No. 7. pp. 464-467.
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