[Images from www.froehls.de]

This appliance combine the use of upper and lower bite blocks to position the mandible forward for skeletal Class II correction. The appliance was first developed by Scottish Orthodontist William Clark and Orthodontic Technician James Watt in 1977. The Twin Block has become the most popular functional appliance in use in the United Kingdom and is gaining popularity across Europe and the USA. The Twin Block appliance is used to help a receded jaw grow forward and skinny or narrow jaws grow wider to help you keep all of your permanent teeth. Clark Twin Block appliance Indicated for following malocclusions

  • Class II Division I
  • Class II Division 2
  • Class I open bites
  • Class I closed bites
  • Class III
  • Lateral arch constriction
  • Anterior/posterior arch length discrepancies
  • Can also be used effectively in TMJ therapy