Pengaruh Penambahan Paladium Terhadap Perilaku Thermal Amalgam Tembaga Tinggi Tipe Lathe Cut

• Main Author: Ellyza Herda (Author)
• Format: Book
• Published: Faculty of Dentistry, Universitas Indonesia, 2015-09-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

<p>Effects of additing 1 percent (w/o) palladium (Pd) on the thermal behavior of a lathe cut type high copper amalgam (13 w/o copper) were studied. The identical alloys, with and without 1% Pd were fabricated. X-ray diffraction studies of the amalgams revealed the elimination of the γ₂-phase by Pd addition DSC thermogram of non-Pd containing amalgam indicated the existence of two γ₁-phaseone with the transition temperature (endothermic peak) at 88^◦C and the other at 109^◦C. The thermogram data of the Pd containing amalgam showed an endothermic peak at 110.7^◦C. The transition temperature of the n phase of the palladium containing amalgam is 4.9^◦C lower than the transition temperature of the n phase of the non Pd containing amalgam. This result indicates that the n phase of the Pd containing amalgam includes more of Tin (Sn) than the non-Pd containing amalgam. The thermogravimetri diagram showed that the phase decomposition occurred at about 390^◦C for the non-Pd containing amalgam and at about 410^◦C for the Pd containing amalgam. It is concluded that the addition of 1% Pd into a lathe cut type of high copper amalgam (13%) could eliminate the formation of γ₂ phase as well as an unstable γ₁ phase, promoting strong mercury bonding to Silver.</p>

Item Description

1693-9697
2355-4800
10.14693/jdi.v9i2.681