Best dentist in Adambakkam | Gummy Smile: Causes and Treatment A gummy smile, where excessive gum tissue is visible when you smile, can affect your confidence. Common causes include genetic factors, short upper lips, or an overgrowth of gum tissue. Treatments include laser gum contouring, crown lengthening, or Botox injections to relax the upper lip. Orthodontic treatment or jaw surgery may be recommended for severe cases. At Dr. Akkshaya Dental & Aesthetics, we provide tailored solutions to enhance your smile and boost your self-esteem.