[The bite-jumping-appliance].

By the development of the bite-jumping-appliance (BJA) the wearing comfort for the patient was significantly improved and also the handling through the doctor was multiple facilitated. 1. While treating with the BJA the forward advancement of the mandible can be done simultaneously with the harmonizing of the maxillary and mandibular dental arches. 2. The wearing comfort during the day time, as well as the speech with the BJA in the patients mouth is possible without any problems due to the fact, that the BJA consist of two separate appliances. 3. The functioning of the BJA can be improved while using extraoral forces. Also the wearing of the BJA without extraoral forces leads to a headgear effect onto the maxilla. 4. Also uncontrolled muscle activities during the night leads, if the muscle activity is great enough, to a total biting together. 5. To avoid the contact between protrusive sticks and inclined plane in the lower appliance, the patient will bring unconsciously the mandible, while speaking during day time, in a more anterior position. This training effect leads to an accelerated forward advancement of the mandible as well as to an accelerated harmonizing of the muscular chewing pattern in the anterior position. 6. A harmonized muscular chewing pattern in the sagittal plane as well as in the frontal plane can be achieved in nearly all patients after finishing the BJA-therapy. These results couldn't be achieved with other bimaxillary appliances [28].