Overview: Optimized interproximal scans ensure "drop-in" restorations by identifying and correcting common scanning errors like moisture and missing data.
Identifying and Correcting Scan Errors
High-quality scans require smooth and dry adjoining tooth surfaces to ensure the final restoration requires no manual adjustments.
Removing Moisture from Adjacent Teeth
The presence of blood, saliva, or general moisture creates jagged edges on the adjacent teeth in the digital scan. Dry the scanning area thoroughly using cotton rolls, suction, and wipes before performing the scan to prevent these errors.
Capturing Missing Scan Data
Gaps or inaccuracies in the digital impression occur due to inadequate coverage during the scanning process. Move the scanner slowly and methodically at multiple angles to ensure the scanner captures complete dental anatomy.
Utilizing Scanning Tools and Techniques
Several software and physical tools improve the accuracy of interproximal contact capture.
Implementing Software Features
Stone View: Activate Stone View in Chairside to see a detailed grayscale view of the interproximal contacts.
HD Scans: Use the HD Scans feature to perform a detailed review of the digital impression, including margin tracing and preparation analysis.
Applying Physical Scanning Aids
CAD/CAM Spray: Apply CAD/CAM spray when the intraoral scanner struggles to capture data from existing gold restorations.
Hemostatic Agents: Apply hemostatic agents to bleeding areas to control fluid levels before starting the scan.
Mirror Tip Positioning: Position the mirror tip close to the subgingival surfaces to ensure accurate capture of the margin.
Mandible Adjustment: Instruct the patient to shift their mandible to provide better scanner access to posterior areas.
Visual Quality Standards
Review the final scan for smooth and dry surfaces on all adjoining teeth. Poor-quality scans often feature rough or jagged surfaces; the rougher the surface appears in the scan, the more difficult it is for designers to create a precisely matching crown.
Good Quality Scans:
Poor Quality Scans: