Dr. William J. Clarke is a renowned orthodontist best known for inventing the Twin Block Technique in 1977, which revolutionized orthodontic treatment by providing a non-surgical method for correcting malocclusions. He also developed the TransForce Appliances in 2004, which are designed to correct arch form and align anterior teeth invisibly. Dr. Clarke has been recognized for his contributions to orthodontics with several awards, including the first award from the British Orthodontic Society for outstanding contribution to the specialty and the IFUNA award for personal outstanding international service to functionalism and orthodontics.