The time zones known as Greenwich Mean Time and the International Date Line are sometimes alternatively used to demark the western from eastern hemispheres, but the would not be true hemispheres as those time zones are not straight longitudes.
The final part of braces are interarch rubber bands, which are used to adjust bite and jaw position. These are connected to the brackets with hooks, often connecting the top tooth bracket with the bottom tooth bracket to help adjust the position of the teeth in the mouth and the position of the jaw.
1 Milwaukee brace Patients can wear this brace to correct any curve in the spine. 2  This brace has a neck ring. 3  Thoracolumbosacral orthosis (TLSO) Patients can wear this brace to correct curves whose apex is at or below the eighth thoracic vertebra (see Normal Spine diagram).