Fig. 3From: The maxillary incisor labial face tangent: clinical evaluation of maxillary incisor inclination in profile smiling view and idealized aestheticsThe maxillary incisor labial face tangent was altered in 5° increments from 70 to 120°, creating a range of images. The annotation of the angles of inclination is shown here for ease of reference; these were not on the images shown to the observersBack to article page