Hardness and stress-corrosion of rubber dam clamps

Timothy Svec, John M. Powers, G. David Ladd

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Rubber dam clamps fracture infrequently during use. There are no American National Standards Institute or International Standards Organization standards for their manufacture. The purpose of this study was to measure the hardness of the clamps and test their resistance to a stress-corrosion test. Upper molar, lower molar, and premolar clamps were obtained from two manufacturers (A, B). The Rockwell C hardness at four sites on the bow of each clamp was then determined. Fresh clamps were placed on blocks corresponding to the average buccal-lingual dimension of the tooth on which they would be used. These blocks were then submerged in room temperature 5.25% sodium hypochlorite for 20 min and then allowed to air dry for 30 min. This was repeated 10 times. Rockwell C hardness values ranged from C30 to 38, with the clamps of manufacturer B being significantly harder. None of the clamps from manufacturer B cracked or corroded. When a third batch received from manufacturer A was tested in the same manner, none of the clamps fractured or corroded either.

Original languageEnglish (US)
Pages (from-to)397-398
Number of pages2
JournalJournal of Endodontics
Volume23
Issue number6
StatePublished - 1997
Externally publishedYes

Fingerprint

Rubber Dams
Corrosion
Hardness
Hardness Tests
Sodium Hypochlorite
Cheek
Bicuspid
Exercise Test
Tongue
Tooth
Air
Organizations
Temperature

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Svec, T., Powers, J. M., & Ladd, G. D. (1997). Hardness and stress-corrosion of rubber dam clamps. Journal of Endodontics, 23(6), 397-398.

Hardness and stress-corrosion of rubber dam clamps. / Svec, Timothy; Powers, John M.; Ladd, G. David.

In: Journal of Endodontics, Vol. 23, No. 6, 1997, p. 397-398.

Research output: Contribution to journalArticle

Svec, T, Powers, JM & Ladd, GD 1997, 'Hardness and stress-corrosion of rubber dam clamps', Journal of Endodontics, vol. 23, no. 6, pp. 397-398.
Svec T, Powers JM, Ladd GD. Hardness and stress-corrosion of rubber dam clamps. Journal of Endodontics. 1997;23(6):397-398.
Svec, Timothy ; Powers, John M. ; Ladd, G. David. / Hardness and stress-corrosion of rubber dam clamps. In: Journal of Endodontics. 1997 ; Vol. 23, No. 6. pp. 397-398.
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