Many studies have investigated the effect of denture impression method. As discussed in a review , a few studies with high-quality evidence indicated that the simplified impression method (single alginate impression) showed better results than the conventional impression method (preliminary and final impression), primarily in cost and time [18–22]. However, the high-quality papers such as those mentioned above came from only four research groups. There are a few who advocate the necessity of the two-step impression method . Whichever method is chosen, additional research is needed. In many countries, dentists take impressions using border molding, which alludes to the fact that border molding is valuable for the treatment of edentulous patients.