Abstract: The invention relates to an orthodontic component (1) with a base body (2) made from plastic (3), having a visible face (5), a base surface (6) spaced at a distance therefrom and side faces (7 to 10) extending between the latter. At least one slot-shaped recess (11) is arranged in the base body (2), which extends, starting from the visible face (5) in a direction towards the base surface (6) and between two oppositely lying side faces (7, 8). Arranged in the recess (11) is an insert element (4), which has a hardness value which is at most as high as the hardness value of the plastic (3) of the base body (2) of the component (1).

Abstract: The present invention relates to an orthodontic component part made of a plastic, which consists of a thermoplastic or a thermoset plastic which is cured to a great extent and by means of which the polyaddition is terminated at least at body temperature.

Abstract: An orthodontic device comprises a ceramic tooth attachment comprising a base body having an in-line transmittance of visible light in the range of 5% to 60% through a thickness of 0.5 mm and the base body consisting of polycrystalline grains comprising a substance selected from the group of high purity zircon, high purity yttrium oxide, lead titanate zirconate and an aluminum oxide, and X-ray visible precipitations arranged on grain boundaries between the polycrystalline grains, the precipitations comprising ytterbium fluoride in a concentration range of 3 to 150 ppm.