Comparative Evaluation of Different Dental Impression Materials in Duplicating Master Casts: An in-vitro Study
Journal Title: Journal of Advanced Medical and Dental Sciences Research - Year 2017, Vol 5, Issue 11
Abstract
Background: Impression materials and appliances used in oral environments such as prostheses can be potential sources of infection transmission. Quality and precision efficacy of different impression materials vary depending upon the type of impression material. Hence; we planned the present study to assess the efficacy of precision of condensational silicone and polyether for duplicating master dies. Materials & methods: We planned the present study to assess and compare the efficacy of condensation silicon and polyether in duplicating master casts. We prepared an acrylic model of upper premolar tooth was prepared based on conventional shoulder type marginal preparation, supragingivally. It was followed by preparation of grooves on all the proximal and other remaining surfaces. Special tray was then made. Based on the type of impression materials; two special trays were made. One for condensation silicon while other one for polyether impression materials. Each casting from each of the master dies was placed on each of the test dies which were made from the same respective impression material. The marginal discrepancy was recorded in all the cases. All the results were recorded and analyzed by SPSS software. Results: We didn’t observe any significant difference while comparing the mean overall discrepancy in the polyether group. While comparing the overall discrepancy in the condensation silicon group, significant results were obtained. Conclusion: Polyether impression materials were found to have higher accuracy in comparison to condensation silicon in duplicating master casts
Authors and Affiliations
Aditi Sharma, Randhir Singh, Monika Kotwal
Keywords
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