Percy Raymond Begg AO (1898 – 1983) was Professor at the University of Adelaide School of Dentistry and a well known Orthodontist, famous for developing the "Begg technique".
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.
William Donald Kelley (1925–2005), orthodontist and inventor of alternative cancer treatments