is generally done to treat periodontal disease or can also be done for cosmetic reasons. It can be surgical or non-surgical.

Surgical procedures includes:
Gum Contouring/ Gum Reshaping.
Gingivectomy-mostly done for pleasing aesthetics and in veneers and crown cases.
Gum De-pigmentation-it’s a cosmetic procedure which changes dark brown color of gums to a coral pink shade.
Flap Surgery for Pocket Reduction.
Bone grafts in Bone Surgery.
Soft Tissue Grafts.
Guided Tissue Regeneration.
Lasers.
Non-surgical procedures includes:
Root Planning.
Sub-Gingival Scaling.
Curettage.