Accuracy of Single-Step vs. 2-Step Double-Mix Impression Technique
Author Information
Author(s): Franco Eduardo Batista da Cunha, Leonardo Fernandes Herrera, Francyle Simões Benetti, Ana Raquel
Primary Institution: Bauru School of Dentistry, University of São Paulo
Hypothesis
There would be no significant differences in the accuracy of dies obtained from different materials or impression techniques.
Conclusion
The 2-step impression technique without relief produced significant discrepancies in stone dies, while the single-step technique resulted in smaller inaccuracies.
Supporting Evidence
- The single-step technique resulted in slightly larger dies.
- The 2-step technique without relief produced significantly smaller dies.
- No significant differences were observed in dies obtained from either material with the single-step technique.
Takeaway
This study looked at how different ways of taking dental impressions affect the size of the molds made. It found that one method is better at making accurate molds than the other.
Methodology
Impressions were taken using polyether and vinyl polysiloxane materials in single-step and 2-step techniques, and the accuracy of the resulting stone dies was measured.
Limitations
The study was conducted in vitro, which may not fully represent clinical conditions.
Statistical Information
P-Value
0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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