Upper teeth that barely peek out when you smile or talk is one of the most common cosmetic concerns people bring to dentists and surgeons. In young adults, a pleasing smile typically shows 2 to 4 mm of the upper front teeth even at rest, with women averaging about 4.8 mm and men about 3.7 mm. If your upper teeth show less than that, or disappear entirely behind your lip, several factors could be at play, and there are real options ranging from simple to surgical.
Why Your Upper Teeth May Not Show Enough
The visibility of your upper teeth depends on three things working together: how long your teeth are, how long your upper lip is, and where your jaw sits vertically. A problem with any one of these can hide your teeth.
Upper lip length is measured from the base of your nose to the edge of your lip. In young adults, this distance is typically 20 to 24 mm. If yours is longer than that, your lip physically drapes over more of the tooth surface. A lip under 20 mm is considered short (and can actually cause the opposite problem, showing too much gum). Lip length also increases with age as the tissue stretches and loses elasticity, which is why tooth show drops significantly over time. One study found that upper incisor display decreased by 3.6 mm between ages 17 and 61.
Your teeth themselves may also be short. Some people have teeth that erupted normally but are covered by excess gum tissue, making the visible portion look stubby. Others have teeth that didn’t fully descend into position, a condition orthodontists call incomplete eruption. And then there’s the jaw itself: if your upper jaw (maxilla) is positioned too high vertically, even normal-length teeth with a normal lip won’t show much. This is called vertical maxillary deficiency.
Exercises and Lip Training
You’ll find suggestions online for lip-lifting exercises, like curling your upper lip upward or practicing a wider smile in the mirror. There’s no clinical evidence that these produce lasting structural changes. Your lip length and resting position are determined by anatomy, not muscle tone. That said, being conscious of how you smile can make a difference in photos. Smiling with more elevation of your upper lip, almost like you’re about to laugh, naturally pulls the lip higher and shows more tooth. It won’t change your anatomy, but it can change the impression you give.
Cosmetic Dentistry: Veneers and Bonding
If your upper teeth are on the shorter side, making them physically longer is one of the most straightforward fixes. Porcelain veneers are thin shells bonded to the front of your teeth, and a dentist can design them to extend the biting edge downward by 1 to 2 mm. That small addition can make a noticeable difference in how much tooth peeks below your lip line. Studies on veneer durability show that extending the incisal edge by up to 2 mm doesn’t significantly compromise fracture resistance, so the restoration holds up well under normal biting forces.
Composite bonding is a less expensive alternative where tooth-colored resin is sculpted directly onto the edge of each tooth. It’s faster (often done in one visit) and reversible, but the material wears down more quickly than porcelain and may need touch-ups every few years. A full set of six to eight upper porcelain veneers typically costs between $6,000 and $20,000 depending on your location and the ceramist’s skill, while composite bonding runs considerably less.
Crown Lengthening: Removing Excess Gum
If your teeth are actually a normal length underneath but covered by too much gum tissue, a procedure called aesthetic crown lengthening can expose more of the natural tooth. A periodontist reshapes the gum line and, in many cases, adjusts the bone underneath to maintain what’s called the biologic width, the roughly 3 mm of space your body needs between the bone crest and the visible gum margin for healthy tissue attachment. Without respecting that measurement, the gums tend to grow back.
This procedure is done under local anesthesia and typically takes one to two hours. Recovery involves some swelling and tenderness for a week or two, with the final gum position settling over three to six months. It works best when the issue is genuinely excess tissue rather than short teeth or a high jaw position. Your dentist can measure the actual tooth length beneath the gum on an X-ray to determine if you’re a good candidate.
Orthodontic Extrusion
Braces or clear aligners can reposition your upper front teeth by pulling them downward, a movement called extrusion. This brings the teeth closer to the lip line so more of them are visible. In more complex cases, orthodontists use small temporary screws placed between the roots of the teeth as anchors. These mini-screws allow precise, controlled force to move the teeth exactly where they need to go.
One documented approach involved extruding the entire upper arch using these anchors, with visible improvement in tooth display within two months of starting the extrusion phase. The full treatment, including alignment and finishing, took about 32 months total. Orthodontic extrusion works best when the teeth are genuinely positioned too high in the bone rather than being short or covered by gum. It’s often combined with bite adjustments in the back teeth to create room for the front teeth to move down.
Subnasal Lip Lift
If your upper lip is the main culprit, a subnasal lip lift is a surgical procedure that shortens the distance between your nose and lip. A small strip of skin is removed just beneath the nose, and the lip is repositioned upward. The scar hides in the crease where the nose meets the face.
Research shows this procedure reduces upper lip length by about 24%, increases the visible red portion of the lip by roughly 33%, and adds approximately 1.75 mm of tooth show at rest. Some data suggests it can improve tooth display by up to 3 mm. The average cost is around $3,100, with a range of $2,400 to $6,100 depending on the surgeon and technique. That price typically doesn’t include anesthesia and facility fees.
Recovery takes about one to two weeks before you look presentable, with the scar continuing to mature and fade over several months. The results are permanent, though your lip will continue to lengthen naturally with age, so some of the effect may diminish over decades.
Jaw Surgery for Severe Cases
When the upper jaw itself is positioned too high, creating a flat, toothless appearance even during a full smile, orthognathic surgery may be the only effective solution. The most common procedure is called a LeFort I osteotomy, where the entire upper jaw is separated from the skull and repositioned downward (and sometimes forward). This surgery corrects vertical maxillary deficiency and can dramatically change both tooth display and overall facial proportions.
This is a significant operation done under general anesthesia, usually requiring one to two nights in the hospital. Recovery involves a liquid or soft diet for several weeks and full healing over two to three months. It’s typically preceded by a year or more of orthodontic preparation to align the teeth so they fit together properly in the new jaw position. Insurance sometimes covers orthognathic surgery when there’s a documented functional problem like difficulty chewing or breathing, but coverage for purely cosmetic concerns varies widely.
Choosing the Right Approach
The best option depends on what’s actually causing the problem, and it’s often more than one factor. A dentist or orthodontist can measure your tooth length, lip length, and jaw position to identify the primary issue. Here’s a simplified way to think about it:
- Short-looking teeth with puffy gums: Crown lengthening to expose more natural tooth
- Teeth that are genuinely small or worn: Veneers or bonding to add length to the biting edge
- Teeth positioned too high in the bone: Orthodontic extrusion to pull them downward
- Long upper lip covering normal teeth: Subnasal lip lift to shorten the lip
- Upper jaw sitting too high overall: Orthognathic surgery to reposition the jaw
Many people benefit from combining two approaches. Someone with a slightly long lip and slightly short teeth might get the best result from a lip lift paired with veneers, where neither alone would have been enough. Starting with a consultation that includes facial measurements and dental imaging gives you a clear picture of which factors are contributing and how much improvement each option can realistically deliver.