To Evaluate Maxillary Permanent Denture Base Retention with Two Step and Single Step Impression Technique Using Polyether Impression Material: An In Vivo Study

Aim of the Study: The aim of study is to compare maxillary denture base retention with two step and single step impression technique using medium body polyether as wash impression material. Materials and Methods: 15 healthy completely edentulous patients were included in this study. For each patient, three special trays were constructed, thus, having total 45 samples further sub divided into three subgroups of 15 each. In Group 1 and Group 2 patients, border molding was carried out with green stick and putty addition silicone respectively. In group 3 patient, no border molding was carried out. In all 3 groups, definitive impression with medium body polyether was made. Final analysis was carried out with Turkey HSD post hoc test in which significant difference was found in retention values of denture bases made for group 1, 2 and group 3 patients. Results: Insignificant difference in retention between group 1 and group 2 (p = 0.7185) and significant difference in retention values of group 1and group 3 (p = 0.0005) and group 2 and group 3 (0.0062). Conclusion: Two step impression technique is more retentive as compared to one step impression technique.