exocad Model Creator info

Discussion in 'exocad' started by DMC, Sep 29, 2014.

  1. josal169

    josal169 Member

    Now I can't paste the text in the base because I am placing the base as a Attachment
     
  2. SiKBOY

    SiKBOY New Member

    I'm having issues creating models with a seperate ditched die on this case. It keeps crashing on me. Does anyone know whats going on? Ive tried changing contruction types from full anatomical and also inlay/only

    When I tried it under inlay/onlay, I marked the margin as per usual in the design stage and when I finished designing and opened model creator, it asked me to make the margin again. The margin markers weren't very fine and the "rope" that marks the margins was pretty thick so not very accurate.

    When I tried it as an anatomical crown, it just crashes.

    Hope someone can help me out.

    Thank you.
    https://www.dropbox.com/s/ez9dzsp9ojm8w1f/Tupper, S.3OXZ?dl=0
     
  3. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    Playing around with this now. First thing I noticed in DB is the antagonist scan is marked as adjacent tooth.
     
  4. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    I changed the restoration type to offset inlay. I ran through Model Creator before trying to do the restoration.
    solidbase.png

    Solid base

    sepdie.png

    Separate die, however I had to mark the area that was 'removable' from the base. As you can see in the screen shot of the die the margin is not ditched.

    This scan crashed Model Creator several times with different restoration settings. I put the jaw scan in Geomagic and the fix wizard suggested that all of the normals were inverted.

    Second try:

    Changed restoration type to offset inlay and opposing from adjacent tooth to antagonist. Started Model Creator and selected Plateless Model plus Extra Dies.
    At the edit stage 'select by clicking surface' and clicked the jaw scan then 'invert', 'ok'.
    Manually defined the margin and made corrections. I got the solid model base to render without a crash.

    Solidbase2.png

    I had to define the removable area again for the die. I added control points and set the removable area close to the margin without overlapping it. This die rendering is better, but not perfect.

    sepdie2.png

    I suspect if you could get the clinician to spend the extra 5 minutes to place a retraction cord to get some separation between the tooth structure and the mangle meat on the lingual model creator would have an easier time determining what is what within the scan mesh.

    sepdie3.png

    One problem area is marked in red, most other areas of the preparation margin are clear. This is the area that really needs some definition (retraction cord/laser) for model creator to be able to do it's job properly.
     
    DMC likes this.
  5. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    If you ever see something like this it's your first clue that something is wrong with a mesh in exocad.

    firstclue.png

    Second clue is stalling and then a crash report. Use expertmode/edit mesh/ select by surface/ invert and then try again.
    Also check for holes or weird folds in the mesh.
     
    Kongo-Otto, LiQUiD, DMC and 1 other person like this.
  6. fabioweno

    fabioweno New Member

    Hi everyone, i need a help, how to create a flexible gingiva in model? Any ideia? I think cut and save area predeterminated with edit model, but when close the hole, increase the model and no adapt again.
    thanks and sorry my bad english
     
    DMC likes this.
  7. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    I heard that this is something that will be available in exocad 2017.
     
    fabioweno likes this.
  8. fabioweno

    fabioweno New Member

    Thanks for information!!!
     
  9. DMC

    DMC Scott Hudson

    Ooohah! Fun idea!
    I will try
     
    fabioweno likes this.
  10. DMC

    DMC Scott Hudson

    I see a flexible material available for my 3d printers that I want to try.

    This is one of the only things I can print to sell. Not sure what else the material is good for? Butt plugs i guess?

    4-bung-hole-stopper-001.jpg
     
  11. fabioweno

    fabioweno New Member

    DMC, i like see this forum, it s help me many times. I study printing models and today in my experience i found a calcinable and model resin in Brazil. I have a friend and his create a factory with a good materials and low cost with better. I send the pictures later to see.
     
    DMC likes this.
  12. LiQUiD

    LiQUiD Active Member

    Thanks so much 2th for taking the time to problem solve this case. I've never used the invert button before. I'll play around with it. I'm not sure that the lingual meat can be the issue. Doesn't exo just ditch automatically around whatever margin is marked regardless of gingiva or not? I've gotten that flat prep area on a few cases and have reported it to Exocad. They said that it has been fixed in the next update.
     
    DMC likes this.
  13. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    Maybe so, but I have done a lot with IO scans. The area circled in the above post has a very irregular surface and trying to get any software to define a margin and automatically segment the mesh for a ditched die and transition the gingiva is asking alot. If the clinician would spend the extra 5 minutes to place a cord you would get a better result with less hassle.

    Could mark the margin and the free form the mesh to smooth that area and see how that works.

    I don't think that model type 'solid with extra dies' isn't really an official version yet.
     
  14. LiQUiD

    LiQUiD Active Member

    That's correct, it's not an official version yet.

    I tried smoothing out gingiva on another case where exo couldn't ditch it properly and that helped but the margin on that case was very clear.

    I tried smoothing out the gingiva on the above particular case after the margin was locked but it's so easy to erase right through and under the margin. After I took out the restoration, the margin wasn't very clear at all. It's not very precise. I might try it again and see what model creator gives me.
     
    2thm8kr likes this.
  15. LiQUiD

    LiQUiD Active Member


    Hi 2thmaker. I had a quick play around with Exocad and model creator. I had another case come in that was an inlay/only. I had the same issues as the previous case but this time I marked the prep as a full anatomical crown. I marked out the margin but where the margin was supra gingival, I marked the margin where the gum line was. [​IMG]

    I ran it through model creator and it ditched fine.

    [​IMG]

    [​IMG]


    So for anyone that uses the beta tester auto ditch around the prep area feature and has very supra gingiva margins . Mark the margin as you will normally do but around the supra gingiva area, mark thhe Margin around the gingiva. It should work fine.
     
    DMC likes this.
  16. josal169

    josal169 Member

    Hello Guys, I trying to make a model with dies but, the programe showme a error windows and it doesn't complete the model. I think it is maybe because the model mesh is not close in the dies zone?

    please give some help with this


    upload_2017-7-19_12-34-21.png

    upload_2017-7-19_12-35-45.png
     
  17. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    mesh holes.png

    I think these holes are too big for Model Creator to automatically close and render a solid mesh.
     
    cadfan likes this.
  18. Kvonn3gut

    Kvonn3gut Administrator Staff Member

    2thm8ker is correct, model creator is designed to create models from intra oral scans. You will have to close the mesh (delete data, close holes, etc) in order to create a model.
     
    2thm8kr and cadfan like this.
  19. josal169

    josal169 Member

    but why just happen with dies models, for this one y change the parametros (no dies) and it works.

    I will work on the mesh to try again.

    Thanks
     
  20. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    No dies means a solid mesh with no segmentations for removable dies.
    Have you tried saving the rendered solid model as stl and reimporting to model creator? Sometimes this works.
     
    texocad likes this.

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