Screw Retained Bridges

Discussion in 'exocad' started by 2thm8kr, Jul 17, 2017.

  1. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

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    Tillmann Steinbrecher
    · 1 min
    Base on feedback we've gotten, I'd like to post some info to improve the user experience when designing screw retained bridges.
    First of all, when designing such bridges, there's two different scenarios which need to be treated differently - and exocad supports both.

    A) When you have ideally placed implants, what you want is a smooth transition between the tooth and the emergence profile area, so that it emerges from the gingiva like a natural tooth. So, the software must ada...pt the tooth shape to the emergence profile margin.
    B) When you have NOT ideally placed implants (and we all know how often that happens...), we don't want to adapt the teeth to the implants at all. Instead, pontics should be used for all teeth, and these shouldn't be adapted to the implants at all.

    What happens quite often is that users set up the case for scenario A (thereby telling the software that they want adaptation to the implants!), when it's actually a case that falls in category B. The result are strangely distorted teeth, lots of free-forming necessary, and ultimately a frustrated user.

    So here's a quick image on how to set up cases correctly for the different scenarios. Hope this helps!

    Libray models to pontics.jpg
     
    mill3d, texocad, alphadental and 12 others like this.
  2. moliva

    moliva New Member

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    Would this also work for non implant cases?

    I have a 3 unit anterior bridge with non ideal positioning of the preparations which makes the pontic too narrow. I didn't really want to spend all the time free forming so I thought this might work. Unfortunately the library models to pontics does not appear on expert mode.

    Im using AG exocad
     
  3. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

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    You can use 'design wax up digitally' to make a wax up. Start a new job as wax up and import the digital dx.
    The * note states that library tooth to pontic isn't available on versions with design digital wax up.
     
  4. moliva

    moliva New Member

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    Is there any way to activate the design wax up digitally on the AG Exocad version?

    That feature is not there for us :hungover:
     

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