A method, comprising the steps of a) providing a first medical-technical representation of a jaw, with upper jaw and lower jaw, a 1 recording an anatomically stable right direction point A, an anatomically stable left direction point B, and an anatomically stable induction point C in a palatinal position in the anterior tooth region of the upper jaw in the first representation, a 2 recording an anatomically stable right direction point A', an anatomically stable left direction point B', and an anatomically stable induction point C' in a labial position of the lower jaw in the first representation, a 3 forming a first geometric body with a first area between the points A, B and C' and a second area between the points A', B' and C in the first representation, b) providing a second medical-technical representation of the jaw, b 1 recording an anatomically stable right direction point A, an anatomically stable left direction point B and an anatomically stable induction point C in a palatinal position in the anterior tooth region of the upper jaw in the second representation, b 2 recording an anatomically stable right direction point A', an anatomically stable left direction point B' and an anatomically stable induction point C' in a labial position of the lower jaw in the second representation, b 3 forming a second geometric body with a first area between the points A, B and C' and a second area between the points A', B' and C in the second representation, and c) setting in relation to each other the first and second representation, whereby the first geometric body and the second geometric body act as a joint reference, wherein the steps a - c are performed using a computer program. a) providing a first medical-technical representation of a jaw, with upper jaw and lower jaw, a 1 recording an anatomically stable right direction point A, an anatomically stable left direction point B, and an anatomically stable induction point C in a palatinal position in the anterior tooth region of the upper jaw in the first representation, a 2 recording an anatomically stable right direction point A', an anatomically stable left direction point B', and an anatomically stable induction point C' in a labial position of the lower jaw in the first representation, a 3 forming a first geometric body with a first area between the points A, B and C' and a second area between the points A', B' and C in the first representation, a 1 recording an anatomically stable right direction point A, an anatomically stable left direction point B, and an anatomically stable induction point C in a palatinal position in the anterior tooth region of the upper jaw in the first representation, a 2 recording an anatomically stable right direction point A', an anatomically stable left direction point B', and an anatomically stable induction point C' in a labial position of the lower jaw in the first representation, a 3 forming a first geometric body with a first area between the points A, B and C' and a second area between the points A', B' and C in the first representation, b) providing a second medical-technical representation of the jaw, b 1 recording an anatomically stable right direction point A, an anatomically stable left direction point B and an anatomically stable induction point C in a palatinal position in the anterior tooth region of the upper jaw in the second representation, b 2 recording an anatomically stable right direction point A', an anatomically stable left direction point B' and an anatomically stable induction point C' in a labial position of the lower jaw in the second representation, b 3 forming a second geometric body with a first area between the points A, B and C' and a second area between the points A', B' and C in the second representation, and b 1 recording an anatomically stable right direction point A, an anatomically stable left direction point B and an anatomically stable induction point C in a palatinal position in the anterior tooth region of the upper jaw in the second representation, b 2 recording an anatomically stable right direction point A', an anatomically stable left direction point B' and an anatomically stable induction point C' in a labial position of the lower jaw in the second representation, b 3 forming a second geometric body with a first area between the points A, B and C' and a second area between the points A', B' and C in the second representation, and c) setting in relation to each other the first and second representation, whereby the first geometric body and the second geometric body act as a joint reference, wherein the steps a - c are performed using a computer program.