Draw the marginline
With the Neckline tool, you can draw a neckline on the scan result and export it to a proprietary format. Neck-margin line data can be imported by software such as ExoCAD.
To draw the neck margin line, you must define the relevant spare teeth in the case information, otherwise you cannot use this function.
First, select the teeth that need to draw the neck line, and then draw them on the model. Changing the color of the model to gypsum is more conducive to observing the characteristics of the neck line. Click the left mouse button to add control points, and hold down the right mouse button to rotate the model.
The neckline must be closed. If adding a control point is wrong, you can use the keyboard "Ctrl" + "Z" to undo the previous point. After the neck line is closed, dragging the control point can still modify the neck line.