Magnetic shape-memory alloy, a type of shape memory material which responds to magnetic fields
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Gustav Arne Ölander (born 31 December 1902 in Stockholm, died 13 May 1984 in Stockholm) was a Swedish chemist, known for his discovery of the shape-memory effect in metal alloys.
Harmeet D. Walia later utilized the alloy in the manufacture of root canal files for endodontics.
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One example is the prevalence of dental braces using SMA technology to exert constant tooth-moving forces on the teeth; the nitinol archwire was developed in 1972 by orthodontist George Andreasen.