Parel S M, Drane J B
J Prosthet Dent. 1976 Mar;35(3):314-8. doi: 10.1016/0022-3913(76)90256-0.
A method of incorporating vertical and horizontal tissues in an obturator impression using an open palate impression tray is presented. The laboratory technique of obturator construction from this impression allows for a definitive (heat-cured) or interim (cold-cured) prosthesis for an edentulous or dentulous patient.