Evaluation of the Effect of Distance Between Dental Abutments on the Accuracy of One-Step and Two-Step Impression Techniques With Polyvinyl Siloxane (PVS) Material.

Objective: The aim of this study was to evaluate the effect of distance between dental abutments on the accuracy of one-step and two-step impression techniques with polyvinyl siloxane (PVS) material.

Materials And Methods: Four master models were fabricated with different interabutment distances equal to one, two, three, and four premolar lengths 1-4 (L1, L2, L3, and L4). Seven one-step impressions were taken from each master model using PVS impression material (Group A, n = 7).