Abstract
1. A new, easy, and predictable method of border molding an edentulous obturator impression is presented. 2. The use of an open-face impression tray facilitates proper extension in the site of the defect. 3. The manipulation of the modeling compound through the open-face tray assures proper seal, compression, and extension of the prosthesis above the mucodermal scar band. 4. The retention of the obturator bulb is mainly mechanical and is dependent upon engaging under-cuts superior to both scar band and the palatal shelf. 5. There should be a continuous peripheral seal between the defect and nondefect side of the obturator.
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