A bite ramp includes a tooth-attachment element and ramp element. The tooth-attachment element is sized and configured for bonding to the lingual surface of a person's tooth, while the ramp element may be either fixed or else hingedly or bendably adjustable relative to the tooth-attachment element. The...http://www.google.co.uk/patents/US7458811?utm_source=gb-gplus-sharePatent US7458811 - Kits comprising a plurality of bite ramps having different angles for orthodontic treatment
