❏ Before the occlusion scan stage, check the following:
- Let the patient be seated in an upright position with the occlusal plane parallel to the floor.
- Check if both maxilla and mandible scan data has unnecessary soft tissues. If so, remove them using the trimming tools.
- Check if there are holes in both maxilla and mandible scan data. If so, perform additional scans.
❏ Related contents
❏ Occlusal scan
1. Place the tip in middle of the deepest posterior area of the maxilla and the mandible.
- Scan areas that have neither a metal restoration nor a missing tooth are adequate for occlusal scanning. If the chosen area has distinctive shapes, it is advantageous for the occlusion process.
- When inserting the scanner tip into the patient's mouth, make sure to place the tip on the buccal space while the patient's mouth is open (figure 1) so that the scanner tip remains in the space between the buccal area and the cheek (figure 2). If you insert the scanner tip when the patient's mouth is closed, the patient may feel discomfort or the scanner tip may cause damages to the gingiva (figure 3).
2. Start the occlusion scan using the rolling method: roll the tip up and down till you scan 3 to 4 teeth from the maxilla and the mandible respectively.
- Acquire scan data from similar posterior teeth for both first and second occlusion.
3. If the system acquires 3D images sufficiently, the alignment procedure automatically begins.
- Depending on the scan area or a way to maneuver the scanner, the automatic alignment could sometimes be unsuccessful. In this case, it is required to perform the manual alignment by marking alignment points on the cusps or the area that is clear enough to be identified as different.
- The 3-point alignment method is needed when the 1-point alignment method is unsuccessful. Both methods are for the initial alignment of scan data. Regardless of the number of alignment points, there is no difference in terms of the accuracy if the initial alignment is successful.
4. The initial alignment is completed for occlusion.
- Through the automatic or manual alignment process, the maxilla and the mandible are put into the initial position for further alignment, the occlusal accuracy of which is not adequate for analysis.
- If you wish to check the occlusal status before the Complete stage, click Optimize or Occlusion Analysis in the command options.