Using an intraoral scanner can significantly enhance accuracy and reduce the frequency of re-scans. However, imperfections in the scans can still occur. While some issues can be rectified by our technicians, this often involves a degree of guesswork that may compromise the fit of the aligners. Below, we discuss three common scanning issues and how to prevent them:
Holes in the Scan
- Gaps observed through the scans of the upper and lower arches.
- These holes typically occur when the scanner does not adequately capture the tooth's anatomy.
- To prevent holes, ensure the scanner remains on each tooth long enough to capture the entire structure. Always verify the scan completeness for each quadrant before proceeding.
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Missing Gingiva
- Insufficient capture of the gingival region in the scan.
- This issue arises when the scanner does not adequately capture the gingival area.
- When scanning, rotate the scanner towards the gingiva to fully capture the gingival region and gum line. Confirm that 3-5 mm of the gingiva is captured in the scan before moving to the next quadrant.
Excess Material
- Unwanted material appears attached to the teeth in the scans.
- This happens when insufficient tooth surface is captured, leading the scanner software to add material erroneously.
- To avoid excess material, maintain the scanner on each tooth long enough to capture the entire surface. Check each scan for completeness before advancing to the next quadrant.
By addressing these common issues, you can improve the quality of your scans and ensure that the aligners fit as intended, enhancing the overall treatment outcome.