Why Does My Child Show So Much Gum When They Smile?

A gummy smile isn't always just extra gum tissue.

• Mouth-Breathing & Airway Issues: Chronic mouth-breathing (due to enlarged tonsils, adenoids, or narrow nasal passages) alters facial development, often leading to a narrower upper jaw and a lower, more prominent gum line. This causes the upper jaw bone to grow downward rather than outward, which can also lead to a long facial appearance.

Instead of waiting for complex orthodontic treatments or surgery later in life, non-invasive early-interceptive appliances like Myobrace and HealthyStart address the underlying cause while your child is still growing.

• Promote Nasal Breathing: These custom removable appliances encourage children to breathe through their nose rather than their mouth, resting their tongue in the proper position on the roof of the mouth.

• Guide Natural Jaw Growth: By expanding the upper arch naturally, they give adult teeth room to erupt properly while restoring proper facial proportions.

• Balance Muscle Function: They help train lip and cheek muscles to function correctly.

Not Sure If Your Child Needs Treatment?

In many young kids, gums adjust naturally as they grow. However, if your child's gummy smile is accompanied by mouth-breathing, nighttime snoring, or teeth grinding, an early evaluation can make all the difference.

When this patient first came to see us at 10 years old, her teeth and jaw were still actively developing. She was dealing with a combination of dental concerns:

• Deep Bite & Overjet: Her top front teeth overlapped her bottom teeth too much and stuck out further than ideal.

• Gummy Smile: When she smiled, a significant amount of upper gum tissue was visible.

Instead of waiting for her permanent teeth to fully come in, which often requires more invasive treatment later, we started early using Myobrace and HealthyStart.

These comfortable, removable appliances gently guided her jaw growth, trained her tongue to rest in the correct spot, and helped widen her upper arch naturally.

Fast forward to age 14: Her adult teeth have come in beautifully! By addressing the root causes early while she was still growing, we successfully corrected her deep bite, reduced the overjet, and balanced her gum line for a healthy, confident smile that will last a lifetime.