you need gum reshaping
When extra gum coverage is hiding large portions of your teeth that cause you to be self-conscious about your smile. This genetic feature is referred to as a “gummy smile.”
Gum reshaping and contouring surgery can help you correct your gum line to expose the right length of your teeth. This procedure is known as gingivectomy, crown lengthening, or a smile lift.
Gum reshaping surgery is sometimes necessary prior to a restorative dental procedure like porcelain veneers or a dental crown. This will provide better support for the restoration.
Gum reshaping can be used to gain better access to a decayed tooth to eliminate the decayed part and reinforce the natural tooth structure by means of composite bonding.