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Golden rules of Oral Harmony
Upper lip Vermillion border 0-2mm above gingival margin of central incisors
Lower lip Curvature coincident with incisal edge of maxillary incisors
#8/9 1.Level with #6/11
2.Relative width = 1.0
#7/10 1.Shorter than #8/9
2.Width relative to #8/9 = 0.6
#6/11 Width relative to #7/10 = 0.6
Gingival margin 1.Coincident with CEJ (maxilla)
2. Can be adjusted to enhance smile line with or without restorations