Check the edge of the oral sweep and shoulder platform

1、Principles of shoulder and margin scan: fully exposed and clear, without any blockage such as saliva, blood, gingiva, oringival margin。 2、Prepare the subgingival bevel edge, requiring a consistent depth of 360°, without damaging the gingiva, no redness, swelling, or ulceration。

3、Intraoral scanning (optical impression): It is a pressure-free impression, without displacing the gingiva! 4、If theutment tooth is prepared with a shoulder (non-gingival shoulder), it is necessary to perform gingival displacement; if it is a subgingival shoulder, it recommended to use a double-line gingival displacement。