What are the causes of a gummy smile?
There are several reasons someone may show more gum when they smile. One of the most common is a short or very active upper lip. In that case the teeth and gums can often be treated with other options.
In other cases, however, the lips and teeth may be in the right position, but the gums are too thick, resulting in short teeth that look squarish. This is called ‘altered passive eruption’ and is due to the gums not moving upwards towards their natural position during growth and thereby covering some of the natural enamel underneath. There is often a genetic tendency to this condition.
Finally in some situations, people may have short teeth and a gummy smile due to wearing of the teeth because of teeth clenching or grinding. Each cause has a specific treatment and so it is important that your treating dentist performs a thorough analysis to determine the correct diagnosis and treatment for your condition.