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A local anaesthetic is applied to the gums, and a laser (a ray of pure concentrated light) is used to trim away the small amounts of excess gum tissue and reshape the edges of the gums above the six front teeth that form the smile. The laser seals the blood vessels in the gums so that the tissue can heal quickly with relatively little discomfort to the patient.
Of course, there are times when reshaping the tissue alone is not enough. In those circumstances the bone at the front of the root of the teeth may have to be reduced. This is done because the gum edges need to be about three millimetres from the edge of the bone. If you don't reduce the bone, the tissue will grow back. This procedure, while more complicated than a simple gum lift, is still relatively comfortable when done properly.