Proportioning effect on physical and chemical properties of polysulfide impression material

Frederick Rueggeberg, Shavon Paschal

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study investigated the effect of variation in proportioning polysulfide base and catalyst. Light, regular, and heavy-bodied pastes were mixed in linear equivalents of base-to-catalyst proportions of 30 70, 40 60, 50 50, 60 40, and 70 30. Compression set, strain in compression, and consistency tests conformed to the American Dental Association (ADA) Specification 19 guidelines. The amount of solvent-leachable components and differences in the cross-linked nature of the cured products were studied. Compression set and strain in compression tests met the ADA specification guidelines. Some consistency values fell outside of the ADA specification limits. The leachable content increased with increasing proportions of catalyst, but polymer cross-linking was remarkably similar for all bodied materials tested. Clinicians need not fear a significant property alteration in polysulfide impression material by the differences (within ±20% of the manufacturer's suggested lengths) in proportioning the component pastes with "eyeball" estimation as directed in the instructions.

Original languageEnglish (US)
Pages (from-to)406-413
Number of pages8
JournalThe Journal of Prosthetic Dentistry
Volume72
Issue number4
DOIs
StatePublished - Jan 1 1994

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American Dental Association
Ointments
Guidelines
Fear
Polymers
Light
polysulfide

ASJC Scopus subject areas

  • Oral Surgery

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Proportioning effect on physical and chemical properties of polysulfide impression material. / Rueggeberg, Frederick; Paschal, Shavon.

In: The Journal of Prosthetic Dentistry, Vol. 72, No. 4, 01.01.1994, p. 406-413.

Research output: Contribution to journalArticle

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