This is where I contour the gumline to give the patient and even smile; as teeth often have a low gumline giving the look of 'baby teeth', or a common concern is two gum levels on teeth beside eachother which gives an unbalanced, crooked smile; also pointed gumline giving a 'Grinch' look the the shape of the teeth. An even healthy gumline is an important aesthetic necessity to the perfect smile!