Purpose: This study was conducted to evaluate and compare the effect of Expasyl paste and stayput retraction cord on the gingival dilation.

Materials and Methods: 80 tooth preparations done were divided into two groups. In group I, retraction was done with stayput retraction cord and in group II Expasyl retraction paste was used. The dies retrieved undamaged were sectioned mid buccolingually with die cuter. Then, the measurement of the sulcus width is done with scanning electron microscope from the margin of free gingival margin to the finish line of the preparation.

Results: The data collected was subjected to anova and student’s t- test for intra and inter group comparisons. The mean width of gingival sulcus achieved with stayput is 0.4365± 0.311 mm and that achieved with Expasyl is 0.345± 0.340mm with statistically significant difference at the value of 0.001.

Discussion: The average of gingival retraction with stayput retraction cord is significantly better than the paste retraction system.

Conclusion: It can be concluded that paste retraction system appears to be a promising system for the control of hemorrhage and easy of placement.