Some people have a very “gummy ” smile. This may be from a very low gum line along the upper front teeth, resulting in an excess of gum tissue showing when he/she smiles wide.
In addition, the upper front teeth may look short and small from too much gum tissue covering these teeth. On certain occasions, a periodontal plastic surgery procedure can be performed to remove the excess tissue, thus re-establishing a higher gum line. This will result in less tissue showing when you smile, while exposing more of your front teeth, making them look longer and more natural.