Evaluation of retentive force of wire clasp made a low Young's modulus β-type Ti-6Mo-4Sn alloy

Research Project

Project/Area Number	21791874
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Prosthetic dentistry
Research Institution	Tohoku University
Principal Investigator	CHIBA Takahiro 東北大学, 大学院・歯学研究科, 大学院非常勤講師 (70396505)
Project Period (FY)	2009 – 2010
Project Status	Completed (Fiscal Year 2010)
Budget Amount *help	¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000) Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000) Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords	Ti-6Mo-4Sn合金 / ワイヤークラスプ / 部分床義歯 / 維持力 / 圧電センサ
Research Abstract	The retentive force of wire clasp made of a low Young's modulus β-type Ti-6Mo-4Sn alloy (β-Ti-alloy) was evaluated using a piezoelectric transduce. There were no significant differences between the retentive force of a β-Ti-alloy wire with a 0.50 mm undercut and that of a cobalt-chrome alloy (Co-Cr-alloy) wire with a 0.25 mm undercut. The β-Ti-alloy wire could be applicable for abutment teeth with large amount of undercuts.