The Twin Block is primarily used in Phase I treatment to correct the bite (open or deep), reposition the lower jaw, increase arch development and/or expand, depending upon your diagnosis. The Twin Block uses the forces of occlusion (how the upper and lower jaw come together) to either open or close the bite depending on the design.
With the Twin Block, 24 hour wear is recommended for optimal results and should not interfere with normal movements of the tongue, lips and lower jaw even though your teeth will not be touching. The Twin Block should only be removed to eat and brush. Make sure that you follow the instructions given to you on how to remove and replace your Twin Block to ensure that it is properly placed and seated every time. It is important to make sure that you bring it to every appointment.
Care of the Twin Block should consist of brushing the upper and lower appliance every time you brush your teeth and a denture cleaner should be used a minimum of 3 times a week.