Fig. 1From: Accuracy of 3D facial scans: a comparison of three different scanning system in an in vivo studyFrontal photograph and facial scan of the subject with reference points in order from top to bottom: Tr (midline of hairline), Na’ (point on soft tissue over nasion), Prn (soft tissue point on tip of nose), L–R Zyg (lateral point of zygomatic arches), Pog′ (soft tissue over pogonion)Back to article page