Abstract
Objective:: The objective was to assess the number of visible defects within impression made by two different techniques. Methodology: This was comparative cross-sectional study was conducted between June 2019 to December 2019 at out patient department of Institue of dentistry, LUMHS Jamshoro. Two impressions were made from 53 crown preparation by using one step and two step dual phase impression techniques. Totaling to 106 impressions. Polyvinyl Siloxane impression material was used with each technique. Evaluation of impressions were made for tears, voids and bubbles and impression were compute as acceptable (A or B) and unacceptable (C or D). Result: There was no significant difference seen in proportion of overall evaluation of two impression technique, as compared by using “Chi-square test”. Conclusion: Insignificant difference was seen b/w one step and two step dual phase impression techniques. Keywords: One step impression technique, two step dual phase impression technique, dimensional accuracy.
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