Figure 2. (A) Spacer for impression material on maxillary and mandibular primary casts (B) Spacer design with vertical stops for maxillary tray (C) Secondary stress bearing areas relieved with wax (D) Wash impression showing thin zinc oxide eugenol impression paste over the PPS areas

From

Revisiting Special Tray Designs for Complete Denture Impression in An Unusual Case of Posterior Palatal Seal Presentation

Khulud AH, Ali MA Alshahrani, Rawah Y Algassm, Zarah S Zameem

American Journal of Medical Case Reports. 2024, 12(8), 110-113 doi:10.12691/ajmcr-12-8-1