For a gap and tension-free fit
– SAE spark erosion
for denture implants

With the SAE spark erosion procedure, dental technicians can work with all dental alloys without any problem, in particular, however with the hard NPM CoCrMo alloys and titanium. In contrast to the the milling and drilling processes, the erosion process occurs without any contact. Electrical short circuit impulses cause the fine erosion in the lowest µm range. This enables even complicated geometric shapes to be formed.

Do you want to see the potential of dental spark erosion live? You are very welcome to come and visit us! Come and visit us for an extensive, no obligation demonstration in Bremerhaven or Berlin. We look forward to arranging a time to meet you.


Passivation procedure 1:
Optimal passivation of the mesostructure using the SAE spark erosion machine. The model with copper electrodes as analogue to the implants or implant abutments with standardised surface design.


Passivation procedure 2:
Optimal passivation using spark erosion of the mesostructure made of CoCrMo following ceramic veneering on the customized original abutments made of titanium which serve as tool electrodes.

With the dental spark erosion procedure, interferences on the inner contour are removed safely and precisely. It is this misfit of the meso or suprastructure that causes tension on the inserted implants which can then lead to problems with osseointegration and the loss of the implants.

Work process - Spark Erosion Process II:
Passivation of denture implants
The workpiece (implant meso or suprastructure) is correctly positioned in the spark erosion machine in relation to the implant model with the screwed-in implant replicas which were exchanged for the copper electrodes for the spark erosion process. The workpiece and spark erosion model with the implant-replica electrodes touch each other only indirectly.

The process occurs in a container which is filled with dielectric fluid, a light petrol. The workpiece and the electrode are linked to a direct current source via a conductor. The spark erosion process begins when the switch is activated.

The resulting spark overs cause the erosion of the workpiece (structure) by way of the electrodes set up on the model, of the parts that impact first. The erosion continues until all parts of the structure have full contact with the electrodes. The workpiece then rests in a circle, entirely on the implant electrodes whose surface design matches exactly that of the implants or abutments on the model or in the mouth.
Maximum time for the passivation process: 30 minutes.

The spark erosion process for the passivation of the bar structure