1. The final impression should cover the entire crown and gingival margin
2. Complete dentition
3. The crowns and gingival margins are clear and complete, without bubble cavities, defects and wrinkles.
4. The occlusal surface, lip cheek surface, and lingual side of the teeth are clear.
5. No demolding.
6. The final print must be tightly adhered to the first print.
7. If there is a third molar, the impression includes at least one-half of the tooth.
8. Full mouth impression is required even for single jaw treatment.