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Article: Scientists at University of Washington release new data on prosthetic dentistry.(Report)
- Article from:
- Health & Medicine Week
- Article date:
- November 2, 2009
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"Statement of problem. impression making remains a challenging procedure due to the potential for voids and tears, which may adversely affect the precise fabrication of indirect restorations. The purpose of this study was to compare vinyl polysiloxane (VPS) impression materials using the I-step impression technique for single and 2-unit crowns," scientists in the United States report (see also Prosthetic Dentistry).
"Twenty subjects provided informed consent, and two 1-step double-phase master impressions (I of each material combination) were made of 25 crown preparations. A relatively new VPS material with heavy-body (HB) and light-body (LB) viscosities, which ...