> For the complete documentation index, see [llms.txt](https://imagoworks.gitbook.io/dentbird-crown/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-crown/quick-start/bridge-design.md).

# Bridge Design

## How to design a dental bridge

## Instructions

### Step 1

Create a new case, load the necessary data, and click the \[Design] button to start the design process.

<figure><img src="/files/KnSfDyHZHvrw2c5XLg8Y" alt=""><figcaption></figcaption></figure>

### Step 2

AI automatically detects and displays the abutment tooth, tooth notation, and margin line. It also detects missing teeth that can be connected as a bridge. For modification methods, refer to *4.8. Modification.*

<figure><img src="/files/RQhxznw1lYE8ZX3kWjPA" alt=""><figcaption></figcaption></figure>

{% hint style="danger" %} <mark style="color:red;">**Caution**</mark>

Verify whether the detected abutment tooth, tooth notation, and margin line are accurate. If necessary, manually modify them.
{% endhint %}

The detected missing area center point can be adjusted by dragging it with the mouse.

<figure><img src="/files/41AsNwSVzSkzDluF7uWB" alt=""><figcaption></figcaption></figure>

{% hint style="info" %} <mark style="color:blue;">**Quick Guide**</mark>

If a prepared tooth is adjacent to a pontic, it is automatically connected as a bridge.
{% endhint %}

### Manual Bridge Connection Settings

#### Step 2-a

Click the link button between the teeth you want to connect as a bridge.

<figure><img src="/files/DAKV6X56dKeBnsys79Wd" alt=""><figcaption></figcaption></figure>

{% hint style="info" %} <mark style="color:blue;">**Quick Guide**</mark>

If an abutment tooth is adjacent to a pontic, it is automatically connected as a bridge.
{% endhint %}

#### Step 2-b

Select all areas to be connected as a bridge, then click the \[Apply] button.

<figure><img src="/files/lj6ritt6ksC1XScsnyQU" alt=""><figcaption></figcaption></figure>

{% hint style="success" %} <mark style="color:green;">**Success**</mark>

If connecting three or more teeth, click all necessary link buttons before clicking \[Apply].
{% endhint %}

### Step 3

Click the \[Generate] button in the lower-left corner to create the bridge. If data is available, the adjacent and opposing teeth are considered during generation.

<figure><img src="/files/QNiJ39zaQ7dYuiJECMWh" alt=""><figcaption></figcaption></figure>

### Step 4

Modify the generated bridge shape if needed, or click the \[Export] button at the top to save the crown design. For modification methods, refer to [Modification](/dentbird-crown/quick-start/modification.md).

{% hint style="info" %} <mark style="color:blue;">**Quick Guide**</mark>

When saving the designed bridge, margin line information (in .constructioninfo file format) is also extracted for bridge processing.
{% endhint %}


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