Marginal accuracy and geometry of cast titanium copings

Ronald Blackman, Ramon Baez, Nasser Barghi

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

The biocompatibility of titanium with human tissue is well established; its potential as an alternate metal for crown restorations has yet to be fully investigated. This study measured the geometry and accuracy of coping margins cast in Ti, 99.5% chemically pure. Twenty castings with 45-degree facial and 90-degree palatal margins were made by indirect technique with a commercial system using recommended procedures. They were then cemented with ZnPO4 cement. The coping and die assemblies were embedded in resin, sectioned longitudinally, and measured with a microscope at × 50 power. Casting shrinkage was characteristic, particularly along the horizontal axis in the plane of the shoulder. Although horizontal linear shrinkage of 45-degree margins was greater than that for the 90-degree form, the surface of marginal discrepancy was greatest with the 90-degree configuration.

Original languageEnglish (US)
Pages (from-to)435-440
Number of pages6
JournalThe Journal of prosthetic dentistry
Volume67
Issue number4
DOIs
StatePublished - 1992

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Titanium
Crowns
Metals

ASJC Scopus subject areas

  • Oral Surgery
  • Dentistry(all)

Cite this

Marginal accuracy and geometry of cast titanium copings. / Blackman, Ronald; Baez, Ramon; Barghi, Nasser.

In: The Journal of prosthetic dentistry, Vol. 67, No. 4, 1992, p. 435-440.

Research output: Contribution to journalArticle

Blackman, Ronald ; Baez, Ramon ; Barghi, Nasser. / Marginal accuracy and geometry of cast titanium copings. In: The Journal of prosthetic dentistry. 1992 ; Vol. 67, No. 4. pp. 435-440.
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