Effects of the space for wash materials on sulcus depth reproduction with addition-curing silicone using two-step putty-wash technique

• Published in: Dental Materials Journal Vol. 32; no. 1; pp. 150 - 155
• Main Authors: Maho SHIOZAWA, Hidekazu TAKAHASHI, Werner J.FINGER, Naohiko IWASAKI
• Format: Journal Article
• Language: Japanese
• Published: Japanese Society for Dental Materials and Devices 01.01.2013
• ISSN: 0287-4547

Aim of this study was to investigate effects of space thickness and consistency of wash materials on sulcus depth reproduction with silicone impressions, low (L), medium (M), and very high consistency (VH), using two-step putty-wash technique. Impressions were taken from truncated cones with 50-, 100-, or 200-μm-wide sulci, using the combinations L+VH or M+VH and different space thickness for wash materials: 2mm (ST2), 1mm (ST1), and approximately 25μm (ST0.025). Sulcus depth reproduction tended to increase with increasing sulcus width. Sulcus reproduction of ST0.025 was deeper than those of the other groups. At 100- and 200-μm sulcus widths, sulcus reproductions of ST1 and ST2 with L+HV were deeper than with M+HV. Regardless of consistency, the thin spacer produced deep reproduction. Adequate 0.5mm sulcus reproductions were obtained with 100 and 200μm wide sulci and 1- and 2-mm spacer widths, combined with low consistency impression material.