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Gummy smile, also known as excessive gingival display, is a smile that shows Gums under the upper lip. It is a common clinical condition, which can be caused by an abnormal tooth eruption (delayed passive eruption), hyperfunction of the upper lip elevator muscle, excessive vertical growth of the maxilla bone, over-eruption of the maxillary anterior teeth, or a combination of the above described factors. Several treatment options have been proposed to enhance the smile display and to reduce the gingival exposure.
Botox is considered one of the safest and most widely used injectables. Botox (Botulinum toxin) has been successful in the treatment of gummy smiles. Botox lip flip can last for an average of 6 months. The material is injected into the hyperactive muscles of upper lip, which causes a reduction in the upward movement of lip thus resulting in a smile with a less exposure of Gums. Botox is usually injected in the three lip elevator muscles that converge on the lateral side of the ala of the nose; the levator labii superioris (LLS), the levator labii superioris alaeque nasi muscle (LLSAN), and the zygomaticus minor (ZMi).
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