THE EFFECTIVE PARAMETERS ON THE CORROSION BEHAVIOR OF DENTAL AMALGAM

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MORTAZAVI V.A.S.; FATHI MOHAMMAD HOSSEIN

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Journal: Journal of Dental School Year:2005 | Volume:22 | Issue:Special Issue Page(s): 65-71

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Title

THE EFFECTIVE PARAMETERS ON THE CORROSION BEHAVIOR OF DENTAL AMALGAM

Author(s)

MORTAZAVI V.A.S. | FATHI MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

DENTAL AMALGAMQ3

AMALGAM CORROSIONQ4

SURFACE TREATMENTQ4

AMALGAM RESTORATIONQ4

CARVINGQ4

BURNISHINGQ4

POLISHINGQ4

Abstract

Purpose: The aim of this research was to evaluate the effect of SURFACE TREATMENT, clinical performance and the condition and position of the dental restoration on the corrosion behavior of DENTAL AMALGAM. Materials & Methods: Commercial amalgam namely Oralloy was selected to prepare 21 flat amalgam samples. After triturating and condensation, the samples were divided into three groups and each group was finished by using one of the three clinical procedures; CARVING, CARVING-burnishing, CARVING-burnishing-polishing. A special cylindrical mold was used in order to simulation of the inter-proximal areas and proximal surfaces of the dental restorations. Stainless steel matrix band was placed on the internal mold surfaces and amalgam paste was compacted in the mold and 14 cylindrical samples were prepared.Electrochemical tests were performed at a temperature of 37±1oCin normal saline in order to determine the corrosion behavior of DENTAL AMALGAM samples. Tafel extrapolation and linear polarization methods determined corrosion potential and corrosion current densities. The mean value and standard deviations of the results were calculated. The mean values were statistically compared by ANOVA and Duncan methods at 95% level of confidence.Results: The results showed statistically significant differences between the mean corrosion current density values of three different groups of DENTAL AMALGAM(P<0.05). The carved group showed more corrosion resistance in comparison with the sample near the matrix band (P<0.05) as an index of the proximal surfaces of the dental restorations.Conclusion: Even a simple clinical performance could effect on the corrosion resistance of DENTAL AMALGAM. The proximal surfaces of the class II restotations are not only susceptible to concentration cell corrosion but also possess less corrosion resistance.

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APA: Copy

MORTAZAVI, V.A.S., & FATHI, MOHAMMAD HOSSEIN. (2005). THE EFFECTIVE PARAMETERS ON THE CORROSION BEHAVIOR OF DENTAL AMALGAM. JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE, 22(Special Issue), 65-71. SID. https://sid.ir/paper/22149/en

Vancouver: Copy

MORTAZAVI V.A.S., FATHI MOHAMMAD HOSSEIN. THE EFFECTIVE PARAMETERS ON THE CORROSION BEHAVIOR OF DENTAL AMALGAM. JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE[Internet]. 2005;22(Special Issue):65-71. Available from: https://sid.ir/paper/22149/en

IEEE: Copy

V.A.S. MORTAZAVI, and MOHAMMAD HOSSEIN FATHI, “THE EFFECTIVE PARAMETERS ON THE CORROSION BEHAVIOR OF DENTAL AMALGAM,” JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE, vol. 22, no. Special Issue, pp. 65–71, 2005, [Online]. Available: https://sid.ir/paper/22149/en

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