The effect of nonionic surfactants on bubble entrapment in elastomeric impression materials

Barry K. Norling, Morris H. Reisbick

Research output: Contribution to journalArticle

40 Scopus citations


The incorporation of certain nonionic surfactants into silicone and polysulfide elastomers increases their wettability by gypsum products and consequently results in less bubble entrapment in poured casts. The choice of the most effective surfactant is critical and differs not only between types of elastomer, but also between brands of a single type. The beneficial effect of the optimal surfactant is not reduced by rinsing the impression prior to pouring. While the working time of silicone is increased by surfactant additions, that of polysulfide is essentially unaffected, as are the dimensional accuracies and permanent deformations of both materials.

Original languageEnglish (US)
Pages (from-to)342-347
Number of pages6
JournalThe Journal of Prosthetic Dentistry
Issue number3
StatePublished - Sep 1979


ASJC Scopus subject areas

  • Oral Surgery

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