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Related Concept Videos

Veneer01:19

Veneer

Veneer refers to a thin sheet of wood, typically produced to a thickness of about one-eighth of an inch or less. This material is crafted through various methods, the most common being rotary cutting. In this process, a log is mounted into a large lathe and spun against a knife edge, peeling off a continuous strip of wood as the knife penetrates deeper into the rotating log, creating a rotary-cut veneer.
Other veneering techniques include plain-slicing, quarter-slicing, and rift-slicing. These...

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Related Experiment Video

Updated: May 30, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
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Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

Joining dental ceramic layers with glass.

M A Saied1, I K Lloyd, W K Haller

  • 1Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, USA.

Dental Materials : Official Publication of the Academy of Dental Materials
|August 2, 2011
PubMed
Summary
This summary is machine-generated.

Glass-bonding free-form ceramic layers creates robust, chemically durable, and esthetic dental interfaces resistant to delamination, outperforming other bonding methods.

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Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Dental Ceramics

Background:

  • The longevity of all-ceramic dental restorations depends critically on the integrity of interfaces between veneer and core materials.
  • Delamination at these interfaces can lead to restoration failure, impacting clinical performance and patient satisfaction.

Purpose of the Study:

  • To test the hypothesis that glass-bonding free-form veneer and core ceramic layers can create robust, chemically durable, and esthetic interfaces resistant to delamination.
  • To evaluate the effectiveness of tailored glass interlayers in enhancing interface strength and preventing failure.

Main Methods:

  • Independently produced porcelains were joined with matching alumina or zirconia core ceramics using designed glasses with tailored thermal expansion coefficients.
  • Scanning electron microprobe analysis (SEMA) was employed to characterize interface chemistry and confirm ion interdiffusion.
  • Vickers indentations were used to assess interface toughness by inducing controlled cracks in the glass interlayers.

Main Results:

  • Glass-bonded interfaces demonstrated superior robust integrity compared to interfaces fused without glass or those bonded with resin-based adhesives.
  • The tailored glass interlayers facilitated ion interdiffusion, contributing to strong interfacial bonding.
  • The interfaces exhibited good chemical durability and esthetic potential.

Conclusions:

  • Glass-bonding is a highly effective method for creating robust and durable interfaces between ceramic veneers and core materials (alumina or zirconia).
  • This technique significantly enhances the structural integrity of the interfaces, crucial for the longevity of all-ceramic dental restorations.
  • The findings support the use of glass-bonding as a reliable strategy to improve the clinical performance of dental crowns and fixed dental prostheses.