Bond strength of binary titanium alloys to porcelain

Masanobu Yoda, Tatsuhiko Konno, Yukyo Takada, Kazunori Iijima, Jason Griggs, Osamu Okuno, Kohei Kimura, Toru Okabe

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


The purpose of this study was to investigate the bond strength between porcelain and experimental cast titanium alloys. Eleven binary titanium alloys were examined: Ti-Cr (15, 20, 25wt%), Ti-Pd (15, 20, 25wt%), Ti-Ag (10, 15, 20wt%), and Ti-Cu (5, 10wt%). As controls, the bond strengths for commercially pure titanium (KS-50, Kobelco, Japan) and a high noble gold alloy (KIK, Ishifuku, Japan) were also examined. Castings were made using a centrifugal casting unit (Ticast Super R, Selec Co., Japan). Commercial porcelain for titanium (TITAN, Noritake, Japan) was applied to cast specimens. The bond strengths were evaluated using a three-point bend test according to ISO 9693. Since the elastic modulus value is needed to evaluate the bond strength, the modulus was measured for each alloy using a three-point bend test. Results were analyzed using one-way ANOVA/S-N-K test (α=0.05). Although the elastic moduli of the Ti-Pd alloys were significantly lower than those of other alloys (p=0.0001), there was a significant difference in bond strength only between the Ti-25Pd and Ti-15Ag alloys (p=0.009). The strengths determined for all the experimental alloys ranged from 29.4 to 37.2MPa, which are above the minimum value required by the ISO specification (25MPa).

Original languageEnglish
Pages (from-to)1675-1681
Number of pages7
Issue number12
Publication statusPublished - 2001 Jun 15


  • Binary titanium alloys
  • Bond strength
  • Metal-ceramic bonding
  • Porcelain fused to metal
  • Three-point bend test


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