The　re-measurement　of　full　arch　implant　digital　impressions　is　an　important　step　in　denture　restoration.　This　paper　provides　an　efficient　intraoral　photogrammetry　technology　using　projective　invariant　marker,　applied　in　the　re-measurement　of　full　arch　implant　digital　impressions.　The　use　of　projection　invariance　markers　allows　us　to　use　a　compact　scanning　body　and　enable　the　photogrammetry　system　to　quickly　identify　the　scanning　body.　This　method　is　efficient,　reliable,　comfortable,　and　only　requires　a　low-cost　binocular　camera.　The　experimental　data　indicates　that　the　minimum　measurement　error　is　less　than　0.05　millimeters,　with　an　average　measurement　error　of　0.10　millimeters.　The　measurement　time　is　less　than　2　minutes.　©　2024　SPIE.