Measurement of Oxide Adherence to PFM Alloys

J. R. Mackert, E. E. Parry, D. T. Hashinger, C. W. Fairhurst

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

A method has been reported for evaluating adherence of an oxide to its substrate metal to a maximum value of about 40 MPa. Oxidized alloy plates were cemented between two aluminum cylinders with a high-strength cyanoacrylate cement and loaded in tension until failure occurred either at the oxide/metal interface, within the oxide layer, or in the cement itself. Significant differences were found among the oxide adherence values obtained from different PFM alloys. The oxides formed on five of the alloys exhibited adherence strengths in excess of the published value for cohesive strength of dental opaque porcelain, indicating that they possess sufficient adherence to act as the transition zone between the porcelain and the alloy. In addition, a correspondence was found between the quality of porcelain bond for a given alloy and its oxide adherence strength. These results remove the principal objection to the oxide-layer theory of porcelain bonding in dental alloy systems and emphasize the importance of oxide adherence in the establishment of a bond. It is therefore suggested that future work devoted to porcelain-metal bonding should seek to elucidate the mechanism of oxide adherence to PFM alloys and explore the development of new alloys which form adherent oxides.

Original languageEnglish (US)
Pages (from-to)1335-1339
Number of pages5
JournalJournal of Dental Research
Volume63
Issue number11
DOIs
StatePublished - Jan 1 1984

Fingerprint

Oxides
Dental Porcelain
Metals
Dental Alloys
Cyanoacrylates
Aluminum

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Measurement of Oxide Adherence to PFM Alloys. / Mackert, J. R.; Parry, E. E.; Hashinger, D. T.; Fairhurst, C. W.

In: Journal of Dental Research, Vol. 63, No. 11, 01.01.1984, p. 1335-1339.

Research output: Contribution to journalArticle

Mackert, JR, Parry, EE, Hashinger, DT & Fairhurst, CW 1984, 'Measurement of Oxide Adherence to PFM Alloys', Journal of Dental Research, vol. 63, no. 11, pp. 1335-1339. https://doi.org/10.1177/00220345840630111701
Mackert, J. R. ; Parry, E. E. ; Hashinger, D. T. ; Fairhurst, C. W. / Measurement of Oxide Adherence to PFM Alloys. In: Journal of Dental Research. 1984 ; Vol. 63, No. 11. pp. 1335-1339.
@article{f8dbf46f2d77427380b1dd1a6a2a3315,
title = "Measurement of Oxide Adherence to PFM Alloys",
abstract = "A method has been reported for evaluating adherence of an oxide to its substrate metal to a maximum value of about 40 MPa. Oxidized alloy plates were cemented between two aluminum cylinders with a high-strength cyanoacrylate cement and loaded in tension until failure occurred either at the oxide/metal interface, within the oxide layer, or in the cement itself. Significant differences were found among the oxide adherence values obtained from different PFM alloys. The oxides formed on five of the alloys exhibited adherence strengths in excess of the published value for cohesive strength of dental opaque porcelain, indicating that they possess sufficient adherence to act as the transition zone between the porcelain and the alloy. In addition, a correspondence was found between the quality of porcelain bond for a given alloy and its oxide adherence strength. These results remove the principal objection to the oxide-layer theory of porcelain bonding in dental alloy systems and emphasize the importance of oxide adherence in the establishment of a bond. It is therefore suggested that future work devoted to porcelain-metal bonding should seek to elucidate the mechanism of oxide adherence to PFM alloys and explore the development of new alloys which form adherent oxides.",
author = "Mackert, {J. R.} and Parry, {E. E.} and Hashinger, {D. T.} and Fairhurst, {C. W.}",
year = "1984",
month = "1",
day = "1",
doi = "10.1177/00220345840630111701",
language = "English (US)",
volume = "63",
pages = "1335--1339",
journal = "Journal of Dental Research",
issn = "0022-0345",
publisher = "SAGE Publications Inc.",
number = "11",

}

TY - JOUR

T1 - Measurement of Oxide Adherence to PFM Alloys

AU - Mackert, J. R.

AU - Parry, E. E.

AU - Hashinger, D. T.

AU - Fairhurst, C. W.

PY - 1984/1/1

Y1 - 1984/1/1

N2 - A method has been reported for evaluating adherence of an oxide to its substrate metal to a maximum value of about 40 MPa. Oxidized alloy plates were cemented between two aluminum cylinders with a high-strength cyanoacrylate cement and loaded in tension until failure occurred either at the oxide/metal interface, within the oxide layer, or in the cement itself. Significant differences were found among the oxide adherence values obtained from different PFM alloys. The oxides formed on five of the alloys exhibited adherence strengths in excess of the published value for cohesive strength of dental opaque porcelain, indicating that they possess sufficient adherence to act as the transition zone between the porcelain and the alloy. In addition, a correspondence was found between the quality of porcelain bond for a given alloy and its oxide adherence strength. These results remove the principal objection to the oxide-layer theory of porcelain bonding in dental alloy systems and emphasize the importance of oxide adherence in the establishment of a bond. It is therefore suggested that future work devoted to porcelain-metal bonding should seek to elucidate the mechanism of oxide adherence to PFM alloys and explore the development of new alloys which form adherent oxides.

AB - A method has been reported for evaluating adherence of an oxide to its substrate metal to a maximum value of about 40 MPa. Oxidized alloy plates were cemented between two aluminum cylinders with a high-strength cyanoacrylate cement and loaded in tension until failure occurred either at the oxide/metal interface, within the oxide layer, or in the cement itself. Significant differences were found among the oxide adherence values obtained from different PFM alloys. The oxides formed on five of the alloys exhibited adherence strengths in excess of the published value for cohesive strength of dental opaque porcelain, indicating that they possess sufficient adherence to act as the transition zone between the porcelain and the alloy. In addition, a correspondence was found between the quality of porcelain bond for a given alloy and its oxide adherence strength. These results remove the principal objection to the oxide-layer theory of porcelain bonding in dental alloy systems and emphasize the importance of oxide adherence in the establishment of a bond. It is therefore suggested that future work devoted to porcelain-metal bonding should seek to elucidate the mechanism of oxide adherence to PFM alloys and explore the development of new alloys which form adherent oxides.

UR - http://www.scopus.com/inward/record.url?scp=0021518754&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021518754&partnerID=8YFLogxK

U2 - 10.1177/00220345840630111701

DO - 10.1177/00220345840630111701

M3 - Article

C2 - 6389637

AN - SCOPUS:0021518754

VL - 63

SP - 1335

EP - 1339

JO - Journal of Dental Research

JF - Journal of Dental Research

SN - 0022-0345

IS - 11

ER -