Microleakage and SEM interfacial micromorphology of amalgam restorations using three adhesive systems

M. Toledano, E. Osorio, R. Osorio, Franklin Garcia-Godoy

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Objective: This study evaluated the microleakage and interfacial micromorphology of Class V cervical amalgam restorations lined with OptiBond, Ælitebond, or Panavia 21. Methods: Unlined amalgams served as control. Cavities were treated with each dentin bonding system according to the manufacturers' instructions and restored with Tytin non-gamma 2 spherical amalgam. After one week of storage in tap water at 37°C, the specimens were thermocycled (1000 cycles, 6-60°C, 30 s dwell time). Microleakage was assessed by means of basic fuchsin dye penetration and recorded according to an ordinal scale. Results: None of the systems tested in this study completely eliminated microleakage. Kruskal-Wallis one-way ANOVA and Mann-Whitney U test found that on the occlusal wall, Panavia 21 and the control group had the least leakage (P < 0.05). No statistically significant differences were found at dentin margins (P > 0.05). Wilcoxon matched pairs signed rank test found that Panavia 21 and the control group had less leakage at the occlusal than at the dentin margins (P < 0.05); when Ælitebond and OptiBond groups were evaluated, microleakage at the enamel and at the dentin margins was similar for each group. With the adhesive systems, perhaps the hydrophilic bonding agents incorporated the dye during specimen immersion and/or sectioning. Conclusions: The use of adhesives may not be as worthy as resin cements for sealing and bonding amalgam restorations to enamel and dentin

Original languageEnglish (US)
Pages (from-to)423-428
Number of pages6
JournalJournal of Dentistry
Volume28
Issue number6
DOIs
StatePublished - Jan 1 2000
Externally publishedYes

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Dentin
Adhesives
Dental Enamel
Coloring Agents
Resin Cements
Control Groups
Immersion
Nonparametric Statistics
Analysis of Variance
Water
Panavia TPN-S
Optibond

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Microleakage and SEM interfacial micromorphology of amalgam restorations using three adhesive systems. / Toledano, M.; Osorio, E.; Osorio, R.; Garcia-Godoy, Franklin.

In: Journal of Dentistry, Vol. 28, No. 6, 01.01.2000, p. 423-428.

Research output: Contribution to journalArticle

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