Thin lips and a gummy smile: how the plan changes

The patient points at the mirror: "my lips are thin and when I smile a lot of gum shows." That is two concerns in one, and they influence each other. A thin upper lip makes the gums more obvious; heavily exposed gums make the lip look even smaller. But the causes are different, and the plan changes according to each.

This page helps separate what is lip, what is muscle and what is structure, so that adding volume does not become the automatic answer. For isolated exposure, see botulinum toxin for a gummy smile.

Why do the gums show more with a thin lip?

The upper lip works like a curtain. When it is short, thin or lifted too much by the muscles, the curtain rises too far and shows gum. The causes fall into four groups:

Often more than one factor is present. That is why a concern of "thin lips and gums" is rarely solved with a single intervention.

What to measure before deciding

The incisor exposure at rest says a lot about lip length. The exposure in a smile says something about the dynamics. Compare the two and record them.

What lip filler does and does not do here

Volume in the upper lip can improve the thickness of the vermilion and the definition of the border. But it does not meaningfully lengthen the lip and does not stop muscle elevation. In some patients, a subtle increase can change the way the lip folds when smiling; in others, it only enlarges the lip without affecting the gum.

The question is: is the patient more bothered by the thickness or by the gum? If it is the gum, the focus of the plan is the dynamics or the structure, and the lip enters, if at all, as a complement. If it is the thickness, the lip enters, and the gum becomes guidance about limits. The overview of the procedure is in lip filler.

The role of toxin and muscle

When the gum shows because of excessive lip elevation, reducing the muscle action can be discussed. The structure involved includes the levator labii superioris and the relationship with the orbicularis oris. The risk of an inadequate dose or position is an expressionless smile, asymmetry and difficulty pronouncing sounds; that is why the approach belongs to the qualified professional, after assessing the smile in motion.

When the cause is skeletal or dental, toxin does not solve it, and insisting on it frustrates the patient. In these cases, the conversation goes through the dentist on the team and options outside the HOF office.

How to organize the plan

A prudent sequence usually follows this logic, always at the professional's discretion:

1. Define the main cause of the gum exposure: muscle, lip length or structure.
2. Refer or integrate with dentistry when there are signs of a dental or skeletal cause.
3. Treat what is muscular, if indicated, and reassess with the patient.
4. Only then decide on lip volume, in a modest amount and with room for a touch-up.
5. Document rest and smile photos before and after each stage.

This staged path avoids stacking interventions and losing track of what each one did. The same logic applies to a smile that shows little tooth, in the opposite direction, and to a lip that disappears when smiling.

Safety

Lip filler involves the vascularization of the labial arteries. Possible complications include swelling, bruising, asymmetry, nodules and, rarely, vascular occlusion. Keep hyaluronidase available when using hyaluronic acid and review lip vascular occlusion. For toxin, know complications with botulinum toxin and the assessment of ptosis after toxin.

How to use Harmy in this conversation

Harmy's projection uses only the front photo at rest or with a subtle smile, and shows the effect of volume at the Lips point. It does not simulate gum reduction or the change in dynamics, and the patient should be told this. The tool serves to show that a modest volume changes the gum little and may change the thickness. It is an illustrative simulation, not a promise of results.

More on the conversation and the limits in explaining the lip to the patient and thin lips: assessment.

Frequent mistakes in this combination

The first mistake is treating the concern as if it were one. "Thin lips" calls for a conversation about thickness; "visible gums" calls for a conversation about dynamics and structure. When both are handled in the same gesture, you lose the ability to know what worked.

The second mistake is deciding by what is easiest to carry out. Lip filler is a well-known, quick procedure, and so it tends to be offered first, even when the dominant cause of dissatisfaction is in the smile. The question that protects the patient is: if I only enlarge the lip, will he or she be satisfied when smiling?

The third mistake is ignoring the patient's expectation about the smile. Some people want to hide the gum, others just want a fuller lip, and others want both. Ask and write it down, in their words.

What to record in the patient record

Note the rest and smile photos, the approximate measurement of gum exposure, the patient's description in his or her own words and what was explained about the possibilities and limits. If you suggested an evaluation with a dentist, record it. If the patient declined a referral, record that too. Documentation protects both sides and helps compare progress. For clinical photos, follow the standardization described in standardized clinical photography and the rules of consent and LGPD for photos (LGPD: Brazil's data protection law).

When to say the best plan is to do nothing to the lip

There is the patient whose lip, in terms of thickness, is within what the face can carry, and whose real concern is the gum. In that case, the honest answer is that the lip does not need volume. Saying so costs a sale and protects the relationship: a patient who receives an unnecessary addition and still sees the gum comes back frustrated.

The same applies in reverse. If the gum is subtle and the real concern is lip thickness, there is no reason to investigate dynamics beyond what is needed. The assessment serves to fit the plan to the concern, not to increase the number of procedures.

Summary for the decision

Thin lips with visible gums is a case in which the order of actions matters and the cause must be named before the approach. In short: examine in motion, separate muscle from structure, integrate with dentistry when there are signs of a dental or skeletal cause, treat what is muscular with caution, and leave volume for last and in a modest amount. Always at the discretion of the qualified professional, according to the rules of their professional board in Brazil, and without promising results.