CAD/CAM-manufactured Herbst hinge framework
welded to base
Herbst hinges can also be designed and manufactured in the same way as the GNE shown above.
With this design, large forces can also be expected, and a correctly executed weld with a PUK D6 will be the right choice.
Here, the industrially manufactured base (yellow object) was constructed from a database and removed again at the end.
The second photo shows the welding before finishing.
This should be kept to a minimum so that the weld seam is not unnecessarily weakened.
If necessary, the weld seam can be built up with laser welding wire of the same type before finishing and then finished afterwards.
A publication on the topic of CAD/CAM in orthodontics, which, in addition to the design of a Herbst hinge, also sheds light on the manufacture of other orthodontic appliances, can be found under this link.
The article appeared in the 09/2023 issue of Kieferorthopädie Nachrichten, published by OEMUS MEDIA AG, and was written by the two orthodontists Dr. Seung-Woo Yoo (Neu-Isenburg) and Dr. Matthias Himmelreich (Langen).
Video: Welding a Herbst hinge base
The stable connection is further reinforced by adding welding wire.