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Effects of Electrobrightening on the Fit Surface of Cobalt-Chromium RPD Frameworks.

Authors :
Sinclair, Gary F.
Radford, David R.
Sherriff, Martyn
Walter, John D.
Source :
International Journal of Prosthodontics; May/Jun2000, Vol. 13 Issue 3, p232-237, 6p, 6 Black and White Photographs, 1 Chart
Publication Year :
2000

Abstract

Purpose: The purpose of this study was to compare 3 different electrobrightening techniques and 3 electrolytic solutions in their effects upon the fit surface of cast cobaltchromium frameworks. Materials and Methods: Fifty cast cobalt-chromium frameworks, which were subsequently divided into batches of 10, were prepared according to a standard protocol. Three electrobrightening techniques were tested initially using a single brand of electrolyte (Croform) and a batch of 10 frameworks per technique. The loss of metal by weight was determined from the fit surface of each casting. The least corrosive technique of these 3 was used again with 2 other brands of electrolyte (Nobilium and E501) in a repetition of the protocol. The fit surfaces of 8 random samples cut from each batch of electrobrightened castings were viewed by scanning electron microscope (SEM). Results: Statistical analysis applying a one-way analysis of variance and Bonferroni's multiple comparison of means test demonstrated that one immersion of the framework for 10 minutes at 1 amp when used in conjunction with Nobilium electrolyte removed the least metal ( P= 0.001). The SEM study suggested that the Nobilium electrolyte also produced the smoothest surface. Conclusion: Electrobrightening techniques affect the amount of metal removed, and the electrolytic solution used influences the resultant surface. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
08932174
Volume :
13
Issue :
3
Database :
Complementary Index
Journal :
International Journal of Prosthodontics
Publication Type :
Academic Journal
Accession number :
36908939