Indiana University-Purdue University Indianapolis (IUPUI) / This study was designed to evaluate a dental alloy containing stannous
hexafluorozirconate at 0.5 percent by weight, to determine how the fluoride additive
might affect the physical properties of the alloy and the clinical performance of the
amalgam restorations.
Using established methodology, the fluoride containing alloy was evaluated
in the laboratory for fluoride release, enamel uptake and solubility, strength, hardness,
flow, dimensional change, corrosion resistance, and marginal leakage. Clinically,
98 pairs of test and control restorations were placed and evaluated for marginal
adaptation, surface characteristics, and recurrent caries.
The results indicate that the fluoride containing alloy meets the ADA
specifications for amalgam alloys, though the strength properties of the amalgam
are reduced. The increased susceptibility to corrosion noted in the laboratory for the
fluoride-containing amalgam did not correlate with the clinical performance of the
restorations, which showed no deleterious affects resulting from the addition of the
fluoride compound. The reduced enamel solubility observed in the laboratory can be
considered an adjunct in the prevention of recurrent caries, though no recurrent caries
was reported for either the test or control restorations. Again, the prevention of
recurrent caries must begin with appropriate cavity design, care in manipulation of
materials and responsible diet and hygiene practices.
| Identifer | oai:union.ndltd.org:IUPUI/oai:scholarworks.iupui.edu:1805/4382 |
| Date | January 1973 |
| Creators | Weaver, Richard G., 1939- |
| Source Sets | Indiana University-Purdue University Indianapolis |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
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