How to fabricate a custom zirconia abutment( Astra)

The is a step for step illustration on how to fabricate a "Metal-Free" custom abutment.

The Astra "ZirDesign 3.5/4.0" is used,but this technique can be applied with any other Zirconia Abutment on the market.

Model fabrication

Please note that we do not use "Pink Gingival Soft Tissue"

Stone will give you a more accurate reading and is much easier to work with.

Stock Abutment placed and stone trimmed to re-create the "Emergence Profile" needed to create a nutural looking Abutment

Zirconia Abutment is coated with a shaded liner to help create a stronger bond and modify the shade of the white zirconia

In this case we used a "ZL1 Zirliner" from Ivoclar Vivadent "Emax ZirPress" system

Abutment is fired at manufactures specified firing program.

Abutment is hand wax to correct proportions.

We are trying to get as close as possible to create symmetry with #9

This will ensure that we have even amounts of porcelain coverage on both restorations.

This is "Very Important"

Final shaped and contoured abutment in wax

Abutment sprued and ready to be invested

Investing process

Placed in burnout oven.

For Pressing an HT(High Translucent) ZirPress Ingot is used

 Loading of ring ready to be pressed

 Pressed unit ready to be glassbeaded out of the investment material

Pressed Custom Abutment still on sprue base

 Finished result

 Beautiful light transmission