Now, botox to correct 'gummy smile'

Aug 02 2014, 11:24 IST
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Botox is injected into the upper lip 'elevator' muscles to inhibit contraction of the upper lip when smiling to prevent the gummy smile. Botox is injected into the upper lip 'elevator' muscles to inhibit contraction of the upper lip when smiling to prevent the gummy smile.
SummaryGummy smiles occur for a variety of reasons, most commonly a short upper lip, excessive gum tissue or small teeth — all of which are genetic.

Susanna Miller-Pence’s teeth weren’t the problem; her gums were. When she smiled, her upper lip stretched up so high that a ribbon of pinkish gum was exposed, giving her a so-called “gummy smile.” She hated it.

“The doctor explained that my gums were longer than my teeth, so the dimensions weren’t right,” said Miller-Pence, 52, a psychoanalyst living in San Luis Obispo, Calif.

Fifteen years ago, she had a gingivectomy, an operation to remove some of the extra gum tissue. A month later, she was grinning broadly. “Now everyone comments on my smile,” she said.

Gummy smiles occur for a variety of reasons, most commonly a short upper lip, excessive gum tissue or small teeth, all of which are genetic. According to Dr Stan Heifetz, a cosmetic dentist in New York and White Plains, ideal smiles show up only to about two millimetres of gum. “Anything over three to four millimetres of gum showing starts to look ‘gummy,’ “ he said.

Doctors who specialise in cosmetic procedures estimate that about 14 per cent of women and 7 per cent of men have excessive gingival exposure when smiling.

In the past, surgery was the main treatment option, but that is often costly and painful. Doctors sever the muscles that elevate the upper lip so it can no longer rise as high, or they do a crown lengthening procedure that cuts away gum tissue so the crown appears longer.

In extreme cases, they might perform orthognathic surgery, which repositions the upper jaw if it sticks out too much. But this can be complicated and can take up to two years to complete, Dr Heifetz said. Laser therapy is also sometimes used.

Now people are going another route: onabotulinumtoxinA, otherwise known as Botox.

For the last few years, dentists have been injecting Botox into the upper lip “elevator” muscles. It paralyses the muscles, inhibiting contraction of the upper lip when smiling to prevent the gummy smile.

In contrast to surgery, Botox is quick and easy, doctors who do the procedure say.

A March 2014 study in Aesthetic Surgery Journal found that off-label use of Botox was a safe and effective procedure for gummy smile, albeit one that lasts only three to four months for the average patient, confirming the findings of an earlier report in the American Journal of Orthodontics and Dentofacial Orthopedics.

The price is also more appealing than surgery: Botox costs around $350.

Miller-Pence said she paid about $15,000 for

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