There is hardly a dentist who is not familiar with the types of impressions taken from patients. Therefore, we will only highlight the main key points:
- Material and Technique: It is recommended to use A-silicone (VPS) and to take the impression using a putty and wash technique (heavy body and light body).
- Impression Quality: There must be no air bubbles, voids, or deformations in the impression.
- Model Quality: Any poured plaster (stone) models must also be completely free of voids and deformations.
- Digital Impressions: The use of intraoral scanners is highly acceptable and supported.
- Patients with Periodontal Issues: When taking an impression from patients with a compromised periodontium, the pressure applied by the impression material can cause mobile teeth to shift. This leads to inaccurate alignment (merging) with the CBCT data. In such cases, an intraoral scanner has a significant advantage over a traditional silicone impression.
- Full Arch Only: The impression must always capture the entire jaw, not just a segment.
- Both Jaws and Bite Registration: It is strongly recommended to take impressions of both jaws along with an occlusal (bite) registration. This allows us to load the data into the software and precisely plan the position of the implants in relation to the future prosthetic restorations.
- Laboratory Scanning: Physical impressions (including the bite registration) should be sent to a dental laboratory for desktop model scanning of the jaws.
- File Format: All virtual (digital) impressions must be exported in the .STL file format.
- Removing Temporaries: It is mandatory to remove any non-radiopaque temporary restorations before taking the impression. The impression must be taken of the prepared teeth (abutments), if any are present in the mouth.
Do you have any further questions? Do not hesitate to contact us!
