DOI: 10.36347/sjams.2020.v08i02.071

Pages: 753-758

Aim: Aim of the study was to evaluate dimensional accuracy of new material vinylsiloxane ether and compare with polyviylsiloxane and extended pour alginate. Materials & Methodology: A stainless steel die with two tapered abutments with cross grooves on occlusal surface for reference measurement was fabricated on a lathe. Total thirty samples were made, ten samples from each three study group and poured using Type IV gypsum product. Travelling microscope was used to assess various dimensions. One-way ANOVA test, Tukey’s HSD and ‘t’ test were used for statistical analysis. Results: Showed that casts yielded for all the study groups were bigger in dimensions. Vinyl siloxanether impression material yielded minimum percent deviation from control and most accurate casts. All three impression materials yielded clinically acceptable results. Conclusion: Within the limitations of this study, it was concluded that vinyl siloxanether impression material yielded more accurate impressions. Although, statistically significant differences were observed among the three groups it can be concluded that the overall accuracy of all the casts obtained was high. Clinical Significance: Conventional fixed prosthodontic treatment demands accuracy of prosthesis as it is the prerequisite for long term success of the treatment. It mainly depends on fit of the prosthesis which in turn depends on the dimensional accuracy of dies poured from elastomeric impression materials.