Accuracy of Different Putty-Wash Impression Techniques with Various Spacer Thickness

Chugh, Anshul; Arora, Aman; Singh, Vijay Pratap
January 2012
International Journal of Clinical Pediatric Dentistry;Jan-Apr2012, Vol. 5 Issue 5, p33
Academic Journal
One of the most important steps is accurate impression making for fabrication of fixed partial denture. The two different putty-wash techniques that are commonly used are: (1) Putty-wash one-step technique, (2) putty-wash two-step technique. A uniform wash space is needed for an accurate impression. Nissan et al recommended the use of two-step technique for accurate impression making as there is uniform wash space for the light body material to polymerize. The aim of the present study was to compare the accuracy of stone casts obtained from different putty-wash impression techniques using various spacer thickness. The critical factor that influences the accuracy of putty-wash impression techniques is the controlled wash bulk which is absent in one-step putty-wash impression technique and with polyethylene spacer was used.


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