The Effect of Surface Treatment on the Knoop Hardness of DICOR

Abstract

One reported advantage of DICOR is a hardness comparable to human enamel. However, DICOR restorations are subjected to different surface treatments as a result of processing, esthetics, and functional requirements. This study compared the Knoop hardness of DICOR specimens under three conditions: Treatment I (cerammed); Treatment II (cerammed and shaded); and Treatment III (sectioned to reveal internal DICOR material). Knoop hardness differences among groups were statistically significant (P < 0.05). The cerammed surface was the hardest state of DICOR and harder than human enamel. Shaded DICOR had a surface hardness comparable to dental porcelain. The internal glass- ceramic material, located beneath the shaded porcelain and cerammed 'skin,' had a Knoop hardness similar to human enamel. Article will be published in the International Journal of Prosthodontics, Mar-Apr 1991.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA230875

Entities

People

  • B. K. Moore
  • Carlos A. Munoz
  • Charles J. Goodacre
  • Marjorie L. Swartz
  • W. P. Naylor

Organizations

  • United States Air Force School of Aerospace Medicine

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Communities of Interest

  • Advanced Electronics
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Analysis Of Variance
  • Availability
  • Ceramic Materials
  • Classification
  • Data Science
  • Dental Materials
  • Dentistry
  • Elements
  • Information Science
  • Materials
  • Porcelain
  • Schools
  • Statistical Analysis
  • Surface Finishing
  • Teeth

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  • Educational Psychology
  • Metallurgy