An open topped, adjustable wing impression post cap apparatus with a low profile for taking triple tray impressions of upper and lower dentition with the jaw closed. The adjustable winged low profile impression cap has rotating wings to avoid interference with other mouth structures. By aligning a single projection against a matching surface, a low profile, winged impression cap is placed in a unique clocking position over a low profile impression post or an installed implant abutment. The open top low profile allows adjustment of the abutment and impression post retaining hardware. Rotating the wing assembly into a non-interfering, buccal-lingual position allows the complete centric closure of the jaw. Time and material saving triple tray procedures are improved and costs reduced.