In this article weshow you howthe surface treatment ofPEEKdonebefore veneeringorprior to bonding.
The PEEK - crown after working out with coarse grain diamonds and cross-cut grinders. For greater stability I like to use a garland in the framework
The surface of the garland is pretreated with coarse rubber polishing. The edge for the veneering should be clean and smooth.
The veneered surface is sandblasted with corundum (aluminum oxide). PEEK is a thermoplastic material - therefore you should not go too close to the surface with the nozzle and not dwell too long in one place to avoid heat. The pressure should not exceed 2.5 bar.
Subsequently NOT clean with steam.
The surface is cleaned with oil-free air.
By sandblasting the surface is extremely increased and there are undercuts in the micro-region, thus the adhesive bond is extremely enhanced.
You see the extreme roughening of the surface. The stage and the edges should be also irradiated, cause the bonding at these sites is particularly important.
For conditioning of the surface, I use dialogue bonding fluid of Schütz-Dental and have hereby achieved the best results.
The bonding fluid has an alcohol-like consistency and is applied with a brush once thinly on the surface. After applying a curing time of 90 seconds takes place. Even the light-curing equipment should be used that do not transmit heat to the PEEK. Here, diode light curing units have proven particularly well.
After curing, the conditioned surface gets a satin sheen. The bonding fluid penetrates cause his thin percolation deep into the pores and provides for veneering or gluing a dispersion layer. Now light-curing opaque or adhesives are applied.
In the case of tooth-colored PEEK I use no opaque, cause i use the color of the scaffold material and avoid ugly transitions in the border area. The opaques would leave an ugly line here.
Here we use Sebond grip of Schütz-Dental to condition the surface for the composite - so in the sense of a transparent opaque.
After the Sebond Grip was applied with a spatula, it is finely spread with a brush. The thickness depends on the space we have available, even a small layer is sufficient here. We consider here a slight distance from the edge of the layering surface to produce no unsightly transitions.
The Sebond Grip is also cured in the light curing unit for 90 seconds and forms a stronger dispersion layer, which produces a perfect adhesive bond to the light-curing veneering material. Again, clearly, the distance from the edge of the stage, and thus the end of the veneer surface.
Here, the with composites finished veneered crown with Dialog (Schütz-Dental). The transitions are clean and not optically disturbed by a opaque line. The layering was made by our lecturer Christina Herbaum.
The polishing is carried out with Dialog Vario Polish (Schütz-Dental). Also in the marginal areas is achieved a beautiful, harmonious transitions through the underground of tooth-colored PEEK.
For me the best polishing paste for really all materials such as PEEK, composite, ceramics, precious metals or NP.
This type of supply, which can be integrated best and most compatible in biomechanics is also called bionic crown.
Antagonist friendly and TMJ spare.
In case of damage in the mouth repairable.
Brillant and aesthetically attractive
A wonderful result of Christina Herbaum.
These recommendationsfor conditioningPEEKapply to alltypes ofPEEKandPEKKTON. Gray, white, tooth-colored, pinkandPEEKcanbe safelypreparedfor bondingorveneering.
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