Functional appliances attempt to modify the way jaws grow as well
as moving teeth. They do this by encouraging a posture of the lower
jaw which stretches the jaw muscles and joints.
The appliance.
Twin-Block Functional Appliance
Separate appliances are fitted to both upper and lower jaws
which allows the patient to open and close their mouth normally.
Research has shown that this is the type of functional appliance
that patients find easiest to wear
