Tissue conditioner gels undergo two processes when immersed in water. Ethanol is leached out into the water, and water is sorbed by the polymeric phase of the gel. Materials with high ethanol concentrations show weight loss and shrinkage; those with lower ethanol concentrations show little change. The experimental material in this investigation was found useful for functional impression-taking.
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Braden et al. (1971) studied this question.
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