A gummy slime is described as when more than 2mm of gum shows above the teeth when smiling. Anti-wrinkle effectively treats “gummy smiles” by reducing excessive lip elevation. During the procedure, the toxin is injected directly into the “elevator” muscle of the upper lip, which weakens the muscle’s ability to contract, or raise up too high, when smiling, thus preventing the over exposure of gum line.

What causes a gummy smile?

Causes of a gummy smile include:

  1. The shape and height of the teeth – patients with short upper teeth can have a high gum to tooth ratio.
  2. The amount of gum covering the teeth – excess gum tissue can be removed in a dental cosmetic procedure to make the teeth look taller.
  3. The amount that the upper lip moves when you smile – patients with gummy smiles often have a very active muscle known as ‘levator labii superioris alaeque nasi’ or LLSAN for short LLSAN lives alongside the nose and is responsible for lifting the upper lip.


Results appear about 5-7 days after treatment and can last for up to 3 months.

The region where injection occurs for this procedure is quite sensitive, so we use ice to numb the skin before injection.

If the position of the lip already exhibits a lower middle section compared to the outer lip before treatment, undergoing gummy smile treatment may result in an undesired outcome known as a “Joker smile.”

This limitation applies to individuals whose lip position, specifically the bottom of the middle lip, is lower than the bottom of the outer lip when smiling. In such cases, further relaxation of the LLSAN muscle can potentially accentuate the asymmetry and lead to an unbalanced smile.

If you have a lip position that falls into this category, our experienced team can assess your specific situation and recommend appropriate alternatives that will help achieve your desired smile aesthetics.

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