What Uneven Gums Reveal About Your Bite and Oral Health

An uneven gumline is not always just a cosmetic issue. In many cases, it points to a bite problem, bone loss, or excess tissue that is putting teeth at risk. Here is how to tell the difference, and when treatment is worth pursuing.

What Counts as an Uneven Gumline?

A healthy gumline follows a smooth, consistent arc across your smile. Your gums sit at a similar height on each tooth, with natural variation of only a millimeter or two between neighboring teeth.

An uneven gumline shows up as:

• One tooth that looks noticeably shorter or longer than the teeth beside it
• Gums that sit high on some teeth and low on others across the same row
• A smile where more gum than tooth shows on one side
• Teeth that appear to have different proportions even though they are the same size

Not all of these require treatment. But several patterns do signal problems that go beyond appearance.

What Causes an Uneven Gumline?

Excess Gum Tissue

Some patients have extra gum tissue that partially covers the tooth crown, making teeth look short or uneven. This can result from genetics, certain medications (some blood pressure drugs and anti-seizure medications), or gum tissue that did not recede normally after adult teeth came in.

This is the most common reason a patient comes in asking about a gummy smile. Crown lengthening addresses it directly by removing and reshaping the excess tissue.

Gum Recession on One Side

When recession is affecting some teeth more than others, the gumline becomes uneven in the opposite way — some teeth look longer because the gums have pulled back. This is a sign of localized gum disease, aggressive brushing on one side, or a bite problem concentrating pressure unevenly.

Recession-driven unevenness is treated with tissue grafting, not crown lengthening. The page on [tissue graft candidacy] explains who is a good fit for that procedure.

Bite Problems

How your upper and lower teeth meet affects gum health over time. A deep bite, crossbite, or teeth that have shifted can put more pressure on gum tissue in specific areas, leading to localized inflammation, recession, or bone loss.

In these cases, the uneven gumline is a symptom. Correcting the underlying bite — through orthodontics or bite adjustment — is part of the treatment plan.

Teeth That Have Not Fully Erupted

Some teeth stop emerging before they reach their full height in the smile. The gum sits lower on these teeth than the surrounding teeth, making the tooth look short. Crown lengthening exposes the full crown and brings the gumline into proportion.

Health Risks of an Uneven Gumline

Uneven gums are not just an aesthetic concern. Depending on the cause, they can create real health problems:

• Excess tissue creates deeper pockets around teeth where bacteria collect. These pockets are harder to clean and increase the risk of gum disease.
• Recession on one side exposes root surfaces to decay, sensitivity, and potential tooth loss if not treated.
• Bite-driven unevenness can lead to uneven wear on tooth enamel, jaw pain, and worsening gum damage over time.

Dr. Livingston uses measurements, digital imaging, and a bite analysis to identify which of these is driving the unevenness before recommending treatment.

When Crown Lengthening Is the Right Treatment

Crown lengthening is the right choice when excess gum tissue is the primary problem. The procedure removes and reshapes gum tissue — and sometimes a small amount of underlying bone — to expose more of the natural tooth crown.

Two situations call for crown lengthening:

Aesthetic Crown Lengthening

The goal is a more balanced, proportional smile. Patients typically have teeth that look short because extra gum tissue covers part of the crown. The teeth themselves are healthy and the right size — there is just too much tissue in the way.

This is an elective procedure. The results are permanent.

Functional Crown Lengthening

A tooth needs a crown or filling that extends close to or below the gumline. To place the restoration properly, enough tooth structure must be exposed above the gum. Without it, the restoration cannot seal correctly and is more likely to fail.

Crown lengthening in this case is a preparation step for a restorative procedure, not a cosmetic one. It is often covered by dental insurance when done for functional reasons.

How Dr. Livingston Evaluates Uneven Gums

At your consultation, Dr. Livingston will:

1. Measure gum pocket depths at each tooth
2. Take X-rays to assess bone levels
3. Evaluate bite alignment and identify any points of excessive pressure
4. Assess whether tissue is too thick, too thin, or in recession
5. Photograph the smile for proportion analysis

This tells us whether the issue is cosmetic, structural, or driven by disease — and which treatment fits.

What If It Is Not Crown Lengthening?

Not every uneven gumline needs a surgical fix. Depending on what Dr. Livingston finds:

• Mild recession: Monitoring with improved brushing technique, or tissue grafting if progressing
• Bite problems: Orthodontic evaluation or bite adjustment
• Gum disease: Scaling and root planing to get inflammation under control first
• Hypermobile lip (gummy smile caused by lip movement): Injectable treatment to limit lip elevation

Crown lengthening is one tool. The right diagnosis determines whether it is the right one for you.

Next Steps

If your gumline looks uneven or you have been told you have a gummy smile, a consultation with Dr. Livingston will tell you exactly what is causing it. Many patients are surprised to learn their issue is simpler — or different — than they expected.

Call (970) 221-2444 or book online to schedule your evaluation.