Many patients seeking a cosmetic improvement to their smile have little or nothing wrong with their teeth. Their concerns are their gums appearing too visible, or simply too big, when they smile.
"Gummy" smiles are a common problem, caused by overgrowth of the gum tissue that then covers the teeth. This can be caused by a variety of things, including heredity (from your family) health conditions, and even the use of some common high blood pressure medications.
These reasons can cause a smile to look crooked or lop-sided, or make the teeth seem almost smaller than the gums. Such problems can be easily corrected with a simple procedure known as a cosmetic gum lifting or contouring.