Images from Figure 1 with horizontal black lines placed to illustrate the vertical height variation in manipulated gingival margin levels. For a detailed explanation see the Materials and Methods. Briefly, (A) represents normal gingival margin anatomy; (B) the substituted lateral incisor gingival margins are too high and the substituted canines are too low; (C) the substituted lateral incisor gingival margins are ideal and the substituted canines are too low; (D) all gingival margins are level (the substituted lateral incisors are therefore too high but the substituted canines are ideal); (E) gingival aesthetics are ideal on the patient’s left, but on the right, the substituted lateral incisor is ideal, while the substituted canine is too low; (F) on the patient’s left, the substituted lateral incisor is too high and the substituted canine is too low, but on the right, the substituted lateral incisor is ideal while the substituted canine is too low.