caa a22 4500 475782453 CHVBK 20180406123648.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1023/A:1008972018025 doi (NATIONALLICENCE)springer-10.1023/A:1008972018025 Effect of casting method on castability of titanium and dental alloys [Elektronische Daten] [I. Watanabe, M. Woldu, K. Watanabe, T. Okabe] Titanium, once considered to be difficult to cast because of its relatively high melting point $$\left( {1670 \pm 50^\circ {\text{C}}} \right)$$ and strong chemical affinity, can now be acceptably cast using newly developed casting apparatus. The objectives of this study were to examine the castability of commercially pure (CP) titanium using an ultra high-speed centrifugal casting machine and a pressure difference-type casting unit and to compare the castability of titanium with that of conventional dental casting alloys. To determine castability, two types of patterns were used: a mesh pattern of 22 × 24 mm cut polyether thread sieve, and a saucer pattern (24 mm diameter) perforated to create four T-shaped ends. The casting equipment significantly affected the mold filling of both patterns $$\left( {p < 0.001} \right)$$ . The castability indices obtained from both patterns of CP titanium cast in the centrifugal casting machine were significantly $$\left( {p < 0.05} \right)$$ better than the indices of the castings produced in the pressure-difference casting unit. The radiographs of the saucer pattern cast in the centrifugal casting machine showed some pores that were fewer and smaller in size than the pores found in castings made in the pressure-difference unit. When the ultra high-speed centrifugal casting machine was used with the manufacturer's recommended mold material, the castability of titanium was similar to that of gold alloy or Ni-Cr alloy cast by conventional means. Kluwer Academic Publishers, 2000 Watanabe I. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut Woldu M. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut Watanabe K. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut Okabe T. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut Journal of Materials Science: Materials in Medicine Kluwer Academic Publishers 11/9(2000-09-01), 547-553 0957-4530 11:9<547 2000 11 10856 https://doi.org/10.1023/A:1008972018025 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008972018025 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Watanabe I. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut NATIONALLICENCE 700 1- Woldu M. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut NATIONALLICENCE 700 1- Watanabe K. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut NATIONALLICENCE 700 1- Okabe T. Department of Biomaterials Science, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, Texas, USA aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Medicine Kluwer Academic Publishers 11/9(2000-09-01), 547-553 0957-4530 11:9<547 2000 11 10856 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer