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This Quick Guide tutorial from exocad shows how to use the "Retention" cutback library

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to design an implant bridge type wrap around.

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You may try this with the demo sample called "Screw retained implant Bridge with virtual gingiva design".

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Starting with version 2016, there are a new options for waxup restoration types called "design waxup digitally".

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Furthermore, for all restoration types there is now a virtual gingiva design mode.

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The same modes are also available for pontics.

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You will find more detailed information about virtual waxup and gingiva design in a separate video tutorial.

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Let's proceed to the design.

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If not required, you can skip the emergence profile step and proceed to the next step

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which will be the tooth placement.

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Make sure that you use the correct tooth library. Only exocad's "generic" library includes the retention shapes.

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Why not use the "Chain Mode" to do the tooth placement.

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You will find more information about the chain mode in a separate video tutorial.

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It is a very nice tool to design full arch setups.

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Let's skip the free-forming.

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Select "Design virtual gingiva" in the "Virtual Waxup Bottom" dialog.

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Click "Apply" to start blocking out the virtual gingiva's bottom.

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A separate video tutorial will explain the available settings in this dialog.

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Proceed to the gingiva design step to draw the margin of the gingiva.

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For these wrap around implant bridges, I recommend to hide the anatomical teeth in order to design a smaller gingiva area than you would normally do,

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as we just use it to design the major connector of the implant bridge and not really to design a gingiva.

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To achieve this, draw the margin line a little bit wider than the final restoration's major connector. 
will look like.

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Then proceed to the gingiva design step.

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This step can be skipped as the gingiva will be shrinked later.

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We directly proceed to shrinking the anatomical teeth.

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In this important step, you can now select between different cutback libraries.

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Let's try the retentions with 1 mm diameter.

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You will find more general information about all cutback libraries in a separate video tutorial.

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Alternatively, select retentions with 2 mm diameter.

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Click "Apply" when you have selected the desired library

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and proceed to the next step,

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which is free-forming the retentions.

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Before you do that, I recommend to switch to the Expert mode

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and choose "Tooth Placement" to do some fine-tweaking on the retentions' positions, if necessary.

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Here you have exactly the same placement features as in the tooth placement.

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You can still move, rotate and scale the cutback libraries.

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On teeth with implants I try to avoid placing the retentions in the areas of the screw channels,

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as the screw channels may cut away parts of the retentions.

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Here it is even possible to free-form the retentions.

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"Cusps" allows you to modify half of the retentions,

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"Tooth Parts" modifies just areas,

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"Entire Tooth" modifies the whole retention,

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and "Ridge" affects just very small parts.

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Note that shrinking the gingiva is only possible in the Expert mode.

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There are different ways to shrink the gingiva. This will be explained in a separate video tutorial.

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In our case, we simply want to shrink the entire gingiva.

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To do this, we deactivate the "Auto select gingiva" and we clear all blue areas from being excluded from shrinking.

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Choose a shrinking depth of 1 mm.

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Click "Apply" to start shrinking.

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Click "OK" to close the "Shrink Gingiva Design Part" dialog,

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and choose "Free-form Gingiva" in the Expert mode.

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Choose "Free" and "Smooth/Flatten" to smooth the major connector's design.

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Restart the Wizard to continue the design process.

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Starting with exocad version 2016, you can delete all connectors with a click in the "Connectors" dialog.

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Click "Next" to merge all meshes into a virtual waxup.

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This operation may take a while.

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Then click "Next" to free-form the whole merged restoration.

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As usual, you can add and remove material, smooth parts or modify bigger areas.

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Furthermore, you can use the "Adapt" feature to create a uniform gap between restoration and gingiva.

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Click "Next" to proceed to the next step.

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Switch off all screw holes.

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Click "Next" to finish the design.

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We created a wrap around implant suprastructure in not even 10 minutes.


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Thank you for watching this video.