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Treatment guidelines

Impressions - overview

Key points

  • Impressions have the goals of capturing alveolar ridge and mucosal contours as well as position and angulation of implants
  • Accurate impressions facilitate fabrication of prosthesis that are well-adapted to tissues to address esthetic, phonetic and oral hygiene needs
  • For fixed definitive prostheses, an accurate impression is imperative for fabrication of a passive well-fitting metal framework
  • Commonly used impression materials are polyvinylsiloxane and polyether, intra-oral digital impression technologies are evolving options
  • Key considerations when making impressions are whether to use open or closed trays, splinted or non-splinted impression copings and whether implants are aligned parallel or non-parallel

Clinical topics

Implant prosthetics

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Additional internal materials

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Videos

Patrick Rutten reviews the laboratory part within the digital workflow and the opportunities with CAD/CAM procedures being an excellent alternative to casting technique. CAD/CAM technology provides excellent and predictable precision, passive fit, significant labor and time savings...

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