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8 Acquiring a 3D Model for Orthodontics
The common scan workflow allows you to scan either a partial or full arch. For
either type of scan, you should scan upper jaw, lower jaw, and buccal bite registration.
Once this basic information has been scanned, other scan types (such as scan body
scanning) can be used to acquire other information.
To use the common scan workflow to obtain a 3D model for orthodontic use, you
should acquire images of the upper jaw, lower jaw, and the buccal bite registration, as
well as several millimeters of gingival tissue in
the lingual and buccal scans. You can also use the Quadrant Snapshot tool to
automatically extract five 2D images from the scanned data.
In some cases, you can acquire images of a single arch (partial or full) and not
obtain a buccal bite registration (for example, if there are no teeth in the opposing arch),
but it is recommended that you acquire both arches and a buccal bite registration when
possible.
8.1 To acquire a 3D model, follow these steps:
8.1.1 Scan the upper and lower jaw.
8.1.2 Scan the buccal bite registration.
8.1.3Refine and check the 3D model.
8.1.4Complete and save the 3D model.
8.2 Scanning the Upper and Lower Jaw
To scan a 3D model of the upper and lower jaw, follow these steps:
8.2.1 Dry the teeth thoroughly before starting an acquisition.
8.2.2. On the HELIOS interface, select the Upper Jaw acquisition mode
OR
Press the mode button on the scanner to select the upper jaw scan mode
8.2.3. Place the tip of the scanner on the surface of the tooth to stabilize the scanner and press
the Start
Scan button. Wait until a 3D image appears in the 3D model display screen, and then slowly
move it along the arch at 0-5mm from the teeth. The image will be automatically scanned and
displayed in the 3D model display area.
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