Effect of water content on the mechanical strength of dental porcelain

Yong Keun Lee, Hye Yang Park, June Sung Shim, Kyoung Nam Kim, Keun Wao Lee

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

In this study, we measured the mechanical strength and fracture toughness of feldspathic dental porcelains with different water contents. The mechanical strength of the dental porcelain was measured using a three-point bending test; the fracture toughness of the dental porcelain was measured by a Vickers indentation method. An increased water content was found to decrease both the strength and toughness. This is probably due to easier crack formation or perhaps to a slightly higher crystallinity of the leucite material. We expected and found that it was necessary to study this phenomenon to overcome the failure of feldspathic dental porcelains during refiring after a temporary cementation in the mouth.

Original languageEnglish
Pages (from-to)200-204
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume349
Issue number1-3
DOIs
Publication statusPublished - 2004 Dec 1
EventGlass Science for High Technology. 16th University Conference - Troy, NY, United States
Duration: 2004 Aug 132004 Aug 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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