Research for applying new materials to the orthodontic treatment - Application of actuators (artificial muscles) -

Research Project

Project/Area Number	26670879
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Orthodontics/Pediatric dentistry
Research Institution	Hokkaido University
Principal Investigator	YAMAMOTO TAKAAKI 北海道大学, 大学病院, 講師 (40230560)
Project Period (FY)	2014-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000) Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000) Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000) Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords	人工筋肉 / 矯正力 / 歯科矯正治療 / 歯の移動 / アクチュエーター
Outline of Final Research Achievements	I experimented in order to apply an artificial muscle to a orthodontic treatment. As an artificial muscle material, I experimented by choosing a coil shape memory alloy actuator. I applied the electric current controlled by Pulse Width Modulation. Tension was become to 45.8gf when the electric current was adjusted to the voltage 5.7V and the average voltage 0.62V. Tension was 44.7gf (97.7%) in 4 hours after an experiment start. The results of this study suggest that when adjusting the electric current to apply, it proved that for a long time almost constant force appears. From this, if the electric current which apply to an artificial muscle is turned on or turned off, a force will turn into continuous force, intermittent force, and interrupted force.