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- Title
The Surface of Investments Poured Against Different Duplicating Media.
- Authors
Likeman, Peter R.; Radford, David R.; Juszczyk, Andrzej S.
- Abstract
Two phosphate-bonded investments that were poured into molds of a duplicating gel and a poly(vinyl siloxane) duplicating medium were examined for surface hardness. Untreated surfaces were also examined by the confocal microscope and the scanning electron microscope. The Brinell hardness of samples poured in poly(vinyl siloxane) was greater than that of the same investment poured in duplicating gel. Investments were hardest as set and were significantly softened by drying. Cast hardeners achieved some rehardening of the dried investment samples. Microscopic examination of the investment surfaces revealed greater surface irregularity of samples poured in duplicating gel than in poly(vinyl siloxane), particularly in one investment.
- Subjects
INVESTMENTS; SCANNING electron microscopes; SILICONES; SILOXANES; CONFOCAL microscopy; HARDNESS; BRINELL test; MICROSCOPES; ELECTRON microscopes
- Publication
International Journal of Prosthodontics, 1996, Vol 9, Issue 6, p572
- ISSN
0893-2174
- Publication type
Article