This article defines Dandy quality scanning standards for Sleep Apnea Devices.
What is a Quality Scan
- HD Scans
- The Bite
- Sufficient Scan Data
- Distortions and stitching errors
- Scanning Mistakes to Avoid
HD Scans
- When reviewing your scan before submission, please ensure that in the review step, the scans are being reviewed in HD. These are the scans the lab will use to create the restoration.
The Bite
A good bite is crucial to have an accurate appliance.
What is a good vs. bad bite scan?
Good: Bite is taken in protrusion
Bad: Bite not taken in protrusion
Sufficient Scan Data
Having sufficient scan data is crucial to achieving a good-fitting appliance and to avoid any holds from the lab that may delay delivery.
What does a good scan vs. a bad scan need?
Good: No missing scan data and the teeth are fully captured
Good: Palate fully scanned and 3-5mm of surrounding gingival tissue
Good: Anatomical landmarks: hamular notches, retromolar pads, and any edentulous ridges,
distal surface of the last tooth in each arch
Bad: Scan is missing areas of teeth
Bad: Palate not fully captured and insufficient tissue not captured
Bad: Missing anatomical landmarks and the distal surface of the last tooth in each arch
Distortions and Stitching Errors
Avoiding distortions and stitching errors is crucial to have a great-fitting partial and to avoid delays in production.
What is a usable vs. an unusable scan?
- Good: There are no distortions, holes, or stitching errors in these scans.
- Good: There are no areas of visible overlap or double images.
- Bad: Noticeable holes or distortions in the scans
- Bad: Clear double imaging on a scan step
Scanning Mistakes to Avoid
- Insufficient gingival capture: scans must extend at least 3 mm below the gingival margin
of all teeth
- If a Distal Wrap is requested, delivering a scan with incomplete distal capture
- Low scan resolution: Ensure resolution is set high enough to support accurate appliance design