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[Comparative electron microscopy scanning study of Homodent-1 and Goodfill silver amalgam powders]
J Szabó1, B Herczegh, J Bánóczy
1Pécsi Orvostudományi Egyetem Fogászati Klinika, Budapest.
Fogorvosi Szemle
|April 1, 1990
Summary
The study compared silver amalgam dental filling powders, finding "Homodent--1" has irregular grains with coarse porosity, while "Goodfill" exhibits uniform, prismatic grains with minimal porosity.
Area of Science:
- Materials Science
- Dental Materials
Background:
- Dental amalgam alloys are widely used restorative materials.
- Understanding the physical characteristics of amalgam powders is crucial for consistent clinical performance.
Purpose of the Study:
- To compare the microstructural characteristics of two silver amalgam powders: "Homodent--1" and "Goodfill".
Main Methods:
- Microscopic analysis of grain size and shape.
- Assessment of surface porosity for each powder type.
Main Results:
- "Homodent--1" displayed a wide range of grain sizes (2-250 microns) with irregular shapes and significant surface porosity.
- "Goodfill" showed uniform, prismatic grains (40-50 microns thick, 100-300 microns long) with regular surfaces and negligible porosity.
Conclusions:
- "Goodfill" possesses more consistent and favorable grain morphology compared to "Homodent--1".
- The observed differences in grain characteristics may influence handling properties and long-term clinical outcomes of dental restorations.