> For the complete documentation index, see [llms.txt](https://imagoworks.gitbook.io/dentbird-modeler/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://imagoworks.gitbook.io/dentbird-modeler/function/mesh-edit.md).
# Mesh Edit
From the main toolbar at the bottom, click **Mesh edit** to activate the mesh editing tools panel on the left.
### Mesh Editing Tools
#### 1. Trim
**1.1 Smart Selection**
Unnecessary areas in the scan data are automatically selected. The selected area is highlighted.
* **Range**: Use the slider to expand or shrink the selected area.
* **Trim**: Deletes the selected area.
**1.2 Brush**
Use a brush to select areas of the mesh to be trimmed.
* **Selection mode**: Switches between mesh selection and deselection modes.
* **Brush size**: Adjust the brush size using the slider.
* **Selected area option**: Invert or clear the selected area. This option is enabled only when there is a selection.
* **Trim**: Deletes the selected area.
**1.3 Lasso**
In the 3D view, draw a region with the polygon tool to select the area to be deleted.
* **Selection mode**: Switches between mesh selection and deselection modes.
* **Selected area option**: Invert or clear the selected area. This option is enabled only when there is a selection.
* **Trim**: Deletes the selected area.
* **Arch**: Select the arch to be trimmed.
{% hint style="info" %} **Quick Guide**
After selecting an arch, only the selected arch will be shown in the 3D viewer.
{% endhint %}
{% hint style="danger" %} **Caution**
If you switch to another arch or another trimming option before completing the border line, the current border line will be reset.
{% endhint %}
* **Clear**: Deletes the created border line and resets it.
* **Trim**: Deletes the selected area.
***
#### 2. Self-intersections
Used to detect and correct areas where parts of the mesh surface overlap or intersect themselves.
* **Select all**: Selects all currently self-intersected areas.
* **Deselect all**: Deselects all currently self-intersected areas.
* **Remove**: Removes all selected areas.
***
#### 3. Fill hole
Fills selected holes in the scan data detected by AI. By default, AI automatically detects and selects holes in the scan data. Click on the boundary of a selected hole to deselect it, or click on a deselected hole to select it again.
* **Select all**: Selects all currently deselected holes.
* **Deselect all**: Deselects all currently selected holes.
* **Fill holes**: Fills all selected holes.
{% hint style="info" %} **Quick Guide**
All holes automatically detected by AI are selected. Holes that are not detected cannot be filled.
{% endhint %}
***
#### 4. Sculpt
Freely modify the shape of the scan data using brush tools.
**4.1 Add**
Adds material to the mesh surface.
**4.2 Remove**
Removes material from the mesh surface.
**4.3 Smooth**
Smooths the mesh surface.
**4.4 Flatten**
Flattens the mesh surface.
* **Brush size**: Adjusts the size of the brush tool. The current brush radius value is displayed.
* **Strength**: Adjusts the strength of the brush effect.
* **Sync brush size to zoom state**: Enables or disables synchronization of the brush size with the zoom level in the 3D view. When enabled, the brush size changes according to the zoom level.
***
#### 5. Revert to original data
Restores all mesh edits (including auto trim) to the original data.
