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Porosities in five automixed addition silicone elastomers.
Operative Dentistry
|May 1, 1991
Summary
Automixed dental impression materials generally create fewer voids than hand-mixed ones. However, the performance of automixed addition silicones varies between brands, with some showing superior void reduction.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Prosthodontics
Background:
- Addition silicones are widely used for dental impressions due to their accuracy and stability.
- Minimizing voids in impressions is crucial for precise dental restorations.
- Automixing systems offer potential advantages in material homogeneity and reduced handling time.
Purpose of the Study:
- To compare the void content of automixed versus hand-mixed addition silicones.
- To evaluate the variability in void production among different automixed silicone brands.
Main Methods:
- Five different automixed addition silicone materials were tested.
- One hand-mixed addition silicone material served as a control.
- The number of voids in impressions made with each material was quantified and compared.
Main Results:
- Automixed silicones consistently produced fewer voids compared to the hand-mixed material.
- Significant differences in void counts were observed among the tested automixed silicone brands.
- Certain automixed materials demonstrated a markedly lower incidence of voids than others.
Conclusions:
- Automixing technology can reduce void formation in addition silicone dental impressions.
- Material selection is critical, as the efficacy of automixing varies between brands.
- Further research into material composition and mixing dynamics could optimize void reduction.