A method for microleakage evaluation along the dentin/restorative interface.

Franklin Chi Meng Tay, K. M. Pang, A. J. Gwinnett, S. H. Wei

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

PURPOSE: To present a simple non-abrasive protocol in conjunction with the silver-staining method, enabling unobstructed visualization of well-defined microleakage patterns within the demineralized dentin-restorative interface. MATERIALS AND METHODS: Class V preparations were made with an occlusal margin on bevelled enamel and a gingival margin on dentin/cementum. After restoration with All Bond 2/P-50 and Scotchbond 2/Silux, storage in water at 37 degrees C for 7 days and thermocycling 300 times between 5 degrees and 55 degrees C, the specimens were placed in silver nitrate solution. After silver fixation, demineralization and clearing in methyl salicylate, silver stain location was scored ordinally. In addition, a three dimensional portrait of leakage pathways was illustrated using photographic and computer digitization. RESULTS: The Wilcoxon signed-rank test showed that the extent of silver penetration before and after acid demineralization was not significantly different (P > 0.05). This study also confirmed that microleakage is not uniform along the circumference of a restorative margin. Although the protocol is insensitive to microleakage occurring solely within enamel, the predominant concern over that occurring within dentin, in particular along the cervical restorative border, renders it a serviceable alternative for future investigation of the integrity of the marginal seal from clinically restored in vivo specimens.

Original languageEnglish (US)
Pages (from-to)105-108
Number of pages4
JournalAmerican Journal of Dentistry
Volume8
Issue number2
StatePublished - Apr 1 1995
Externally publishedYes

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Dentin
Silver
Dental Enamel
Bisphenol A-Glycidyl Methacrylate
Dental Cementum
Silver Nitrate
Silver Staining
Nonparametric Statistics
Coloring Agents
Acids
Water

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

A method for microleakage evaluation along the dentin/restorative interface. / Tay, Franklin Chi Meng; Pang, K. M.; Gwinnett, A. J.; Wei, S. H.

In: American Journal of Dentistry, Vol. 8, No. 2, 01.04.1995, p. 105-108.

Research output: Contribution to journalArticle

Tay, Franklin Chi Meng ; Pang, K. M. ; Gwinnett, A. J. ; Wei, S. H. / A method for microleakage evaluation along the dentin/restorative interface. In: American Journal of Dentistry. 1995 ; Vol. 8, No. 2. pp. 105-108.
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