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Faculty of Dentistry
Document Details
Document Type
:
Article In Journal
Document Title
:
A Comparative Study of Some Physical Properties and Corrosion Potential of Four Commercial High Copp
A Comparative Study of Some Physical Properties and Corrosion Potential of Four Commercial High Copp
Document Language
:
English
Abstract
:
Gallium-based alloys were currently introduced as a possible alternative to mercury amalgam inspite that no relationship between amalgam and physical health has ever been established. The aim of this study was to compare hardness, creep and corrosion behaviour of four brands of high copper amalgam (Oralloy, Logic, Permite and Dispersalloy) to that of a commercially supplied gallium-based alloy (Galloy). The particle shape and size of the tested alloys were also examined and the P/L ratios were reaffirmed and compared with those reported by the manufacturers. The results of hardness test showed that, Oralloy reported the highest KH value, while Permite was similar to Logic and Galloy was comparable to Dispersalloy. The results of creep test demonstrated that, the mean creep value of Galloy was significantly lower than Permite and Dispersalloy (P>0.05). The results of electrochemical corrosion test showed that Galloy exhibited the highest negative open circuit potential (OCP), meanwhile Logic unicompositional high copper amalgam alloy exhibited the least OCP. Lastly, it could be mentioned that, Galloy has acceptable physical properties comparable to that of high copper amalgam alloys with better creep resistance. Meanwhile, Galloy is more corrosion prone and it should not be introduced as a substitute for mercury amalgam unless its corrosion resistance is improved and long term clinical studies are conducted.
ISSN
:
0
Journal Name
:
Egyptian Dental Journal
Volume
:
46
Issue Number
:
1
Publishing Year
:
2000 AH
2000 AD
Article Type
:
Article
Added Date
:
Wednesday, April 30, 2008
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
مصطفى حسان
hassan, mostafa
Investigator
Doctorate
mahassan2@kau.edu.sa
Files
File Name
Type
Description
A Comparative Study of Some Physical Properties and Corrosion.pdf
pdf
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