Shear bond strength of veneering porcelain to porous zirconia

Takashi Nakamura, Tsuyoshi Sugano, Hirofumi Usami, Kazumichi Wakabayashi, Hiroshi Ohnishi, Tohru Sekino, Hirofumi Yatani

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, two types of porous zirconia and dense zirconia were used. The flexural strength of non-layered zirconia specimens and those of the layered zirconia specimens with veneering porcelain were examined. Furthermore, the shear bond strength of veneering porcelain to zirconia was examined. The flexural strength of the non-layered specimens was 1,220 MPa for dense zirconia and 220 to 306 MPa for porous zirconia. The flexural strength of the layered specimens was 360 MPa for dense zirconia and 132 to 156 MPa for porous zirconia, when a load was applied to the porcelain side. The shear bond strength of porcelain veneered to dense zirconia was 27.4 MPa and that of porcelain veneered to porous zirconia was 33.6 to 35.1 MPa. This suggests that the veneering porcelain bonded strongly to porous zirconia although porous zirconia has a lower flexural strength than dense zirconia.

Original languageEnglish
Pages (from-to)220-225
Number of pages6
JournalDental materials journal
Volume33
Issue number2
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Bond strength
  • Porous zirconia
  • Veneering porcelain

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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    Nakamura, T., Sugano, T., Usami, H., Wakabayashi, K., Ohnishi, H., Sekino, T., & Yatani, H. (2014). Shear bond strength of veneering porcelain to porous zirconia. Dental materials journal, 33(2), 220-225. https://doi.org/10.4012/dmj.2013-191