A bite opener for use during orthodontic treatment has a base for mounting on a lingual side of a tooth, as well as at least one occlusal portion for contact with an opposing tooth so that other teeth (such as molar teeth) can be extruded. In one embodiment, the bite opener has a channel extending between...http://www.google.com.au/patents/US6364659?utm_source=gb-gplus-sharePatent US6364659 - Orthodontic bite opener
