Scanning the last molar's distal surface may be troublesome as it is the deepest area. This is especially so if the last molar is too close to the gingiva, or buried in it, making it quite challenging to acquire as much scan data as you desire. We've put together some tips in this article so that you can learn how to scan the last molar's distal surface more easily.
1. Perform the standard scanning strategy starting from the occlusal surface to the lingual side and finally to the buccal side.
2. Check the scan data to find out where you need to scan further for the last molar's distal area.
3. Approach the distal area by inserting the tip in the direction of the lingual (Figure 1) and buccal side (Figure 2), and scan the distal surface by rotating the tip gently.
- Reaching the distal area with the tip in a way to scan the occlusal surface (Figure 3) is not recommended because it could cause discomfort to patients with a small buccal space.
- Reach the distal area by inserting the tip in the direction of the lingual (Figure 4) and buccal side (Figure 5).
- When scanning from the lingual side, if the retraction of soft tissue fails, you might have unnecessary scan data from the cheeks. Ensure to maintain the retraction of soft tissue while scanning. You can also remove unnecessary scan data by using the trimming tools in iScan.