Nissan J, Laufer BZ, Brosh T, Assif D. Accuracy of three polyvinyl siloxane putty-wash impression techniques. J Prosthet Dent. 2000; 83:161-165

Tricks of the trade: ten simple steps to PVS impression success

From Volume 16, Issue 1, January 2023 | Pages 51-52


Robert M Conville

BDS, MJDF RCS (Eng), PGCert Med Ed, FHEA

Specialty Registrar in Orthodontics, Queens Medical Centre, Nottingham and Charles Clifford Dental Hospital, Sheffield

Articles by Robert M Conville

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Steven Clark

BDS, MSc, FDS MOrth FDS (Orth) (RCS Edin) M.Orth (RCS Eng)

Consultant Orthodontist, Queens Medical Centre, Nottingham

Articles by Steven Clark


The two-step putty and wash impression technique with a spacer medium is an important technique to master. Many associate it primarily with fixed prosthodontics. However, it has an important role to play in many aspects of orthodontic practice. This technique can lead to more accurate stone dies.1 This is extremely pertinent for orthodontists involved in prescribing and making orthodontic aligners and custom-made fixed appliances using impressions. Furthermore, this technique is useful for cases where palatal temporary anchorage devices are being used. Additionally, this technique can produce accurate models that may be required for cases requiring a multidisciplinary orthodontic–restorative approach.

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