Freeforming

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WarningThis page documents exocad's software releases from 2015 on. See documentation for older versions


The 'Free-Forming' window gives you access to the following features:

  • Anatomic forming: Changing the shape of the tooth anatomy, while taking advantage of the intelligent library models
  • Virtual wax knife - adding or removing material, smoothing
  • Adaptation of chewing surface to the antagonist, contacts to the adjacent teeth, and pontics to the gingiva
  • Paint & Pull
  • Attachment Editor


Contents

Anatomical Free-forming

Click & drag on the tooth to change its shape.

During free-forming, it's very useful to visualize distances to antagonists or adjacents - see section "Visualizing contacts and occlusions" for details.

Use the buttons [1]-[4] to change the area that you're editing:
  • Cusps [1] edits individual cusps. Note that this only works properly for restorations based on model teeth (anatomic crowns/copings, anatomic inlays, etc). For offset copings or waxups, the software cannot know the location of the cusp.


  • Tooth parts [3] edits the mesial, distal, buccal, or lingual side, wherever you click on. Useful e.g. for adjusting approximal contacts.


  • Entire tooth [2] edits the entire tooth.
HotkeyUseful hotkeys are available in the "Entire tooth" mode. Hold CTRL to switch to rotation, SHIFT to switch to scaling. This way, you can rotate or scale the tooth while it remains attached to the preparation margin. As always, the software will remind you of the available hotkeys if you move the mouse over the respective button [2].
  • Ridge [4] is for fine-tuning of ridges/bulges.
Free Forming - ANATOMIC - PIC.png
TipYou can also drag and drop the bottom of a pontic when in "Anatomic" forming mode.

By expanding the 'Advanced options', you can access two options allowing you to restrict the movement in certain ways. Using Movement [5], you can restrict movements to occlusal direction (up/down) only. Using Hold parts fixed [6], you can hold certain parts of the tooth fixed, either the cusp tips or the equator.

TipA useful example how you can take advantage of this option: To create deeper or flatter fissures, switch to Entire tooth [2], then check Cusp tips [6]. Now, you can simply drag and drop fissures to make them more or less pronounced, without overly changing the rest of the tooth shape.

Free-Forming Adjustments – Adding or Removing Material, Smoothing

Free Forming - FREE - PIC(2).png

Click the 'Free' tab to switch to the "Virtual wax knife", which allows you to add or remove material. You can toggle between Add/Remove [8] material and Smooth/Flatten [9].

Adding/Removing Material:

To add or remove material, click on the tooth and hold Add/Remove [8]. The longer you hold it, the more material will be added.

HotkeyHold <SHIFT> to remove material

Smoothing

Activate Smooth/Flatten [9], click and hold the mouse button on the parts you'd like to smooth.

HotkeyHold SHIFT to flatten (super-smoothing)
Hold CTRL for a more shape-preserving smoothing

Adjusting the Brush

Using the slider Strength [10], you can adjust the speed at which material is added or removed while you hold the mouse button (or the amount of smoothing when in "Smooth/Flatten" mode). The slider Brush size [11] controls the brush size, that is the affected area around the mouse pointer.
Type [12]: There are 3 types of brush styles to select from:

  • Round ball (default)
  • Pointed, like the point of a knife
  • Flat end of cylinder
TipYou can also use the smoothing option to remove certain artifacts (e.g. due to bad scan data when doing digital copy milling).
TipYou can switch to a different virtual tool using [5]. For example, the "Point of knife" tool is useful for carving fissures.



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