Hinge axis orbitals plane
The hinge axis orbitals plane (also called axis-orbitals plane , axis-orbital plane or AO plane ; abbreviation : AOE) is a reference plane defined on the skull . It runs from the left orbital (lowest point of the anterior edge of the eye socket) to the hinge axis points (the imaginary points of passage of the axis of rotation of the temporomandibular joint through the skin.) By marking these reference points with lead spheres before making a cephalometric image , the reference points can be transferred to the X-ray image. Since modern articulators are designed with the AO plane as the reference plane, the coordinate systems can be synchronized in this way.
The AO plane forms an anteriorly open angle of approx. 13 ° with the occlusal plane (12.87 ° with a spread of 5.99 °):
Individual evidence
- ↑ Piehslinger, Eva: fundamentals of dental prosthetics . Universimed Verlags- und Service GmbH, Vienna 2006, ISBN 3-901829-03-2 , p. 47 .
- ↑ Slavicek, Rudolf: The chewing organ: functions and dysfunction . Gamma, Medical Science Fortbildungsges., Klosterneuburg 2000, ISBN 3-9501261-0-4 , p. 448 .
- ↑ Slavicek, Rudolf: The functional determinants of the masticatory system . Verlag dental and medical literature, Munich 1984, ISBN 3-87394-025-6 , p. 70 .