A gap between the front teeth, called a diastema, can usually be closed with composite bonding, porcelain veneers or orthodontics such as Invisalign. Bonding adds tooth-colored material to fill the space; veneers reshape the teeth with thin porcelain; aligners move the teeth together. The best choice depends on the gap's size, its cause and your bite.
What a diastema is
Diastema is the dental word for a space between two teeth. It's most noticed between the two upper front teeth, but it can appear anywhere. Many people love their gap and see it as part of their personality. Others want it closed. Both are valid choices, and there's nothing wrong with keeping a healthy gap.
What matters medically is knowing why the gap is there — especially if it's new or growing.
Common causes
- Tooth size vs. jaw size. If the teeth are small for the jaw, spaces appear between them.
- Missing or small side teeth. When the teeth next to the front ones are small or missing, the front teeth can spread apart.
- A large frenum. The frenum is the small band of tissue that connects the inside of your upper lip to the gum between the front teeth. If it's thick or attaches low, it can keep the teeth apart.
- Habits. Thumb sucking in childhood or pushing the tongue against the front teeth when swallowing can push teeth forward and open spaces.
- Gum disease. When gum disease weakens the bone that holds the teeth, teeth can drift and new gaps can open. This is a health issue, not just a cosmetic one.
Important: a gap that's new or getting bigger in an adult should be checked. It can be a sign of gum disease or bite problems. See our page on gum disease and periodontics.
Option 1: Composite bonding
Composite bonding uses tooth-colored resin, shaped by hand directly on the teeth, to add width to the sides of the front teeth and close the space. Usually little or no drilling is needed.
Often a good fit when: the gap is small, the teeth are healthy and well aligned, and you want a quick, conservative change.
Keep in mind: resin can stain and chip more easily than porcelain and may need touch-ups over the years. If the gap is wide, adding a lot of width can make the teeth look too wide. Learn more on our composite bonding page.
Option 2: Porcelain veneers
Porcelain veneers are thin, custom ceramic shells bonded to the front of the teeth. They can close a gap while also changing shape, color and length.
Often a good fit when: you want to close a gap and improve other things, such as color, worn edges or uneven shapes; or when the teeth are small and the space can be shared across several teeth so none looks too wide.
Keep in mind: veneers usually require removing a thin layer of enamel, so they're a long-term commitment. See our page on porcelain veneers, and our comparison of porcelain vs. composite veneers.
Option 3: Orthodontics (Invisalign or braces)
Orthodontics moves the teeth themselves to close the space. Clear aligners like Invisalign are a series of removable, nearly invisible trays that shift the teeth gradually.
Often a good fit when: there are several gaps, the bite also needs correction, or the teeth are a normal size and simply spaced apart. It changes nothing about the tooth surface.
Keep in mind: it takes longer than bonding or veneers, and you'll need a retainer afterward to keep the space from reopening. Dr. Vivian Menendez is an Invisalign Preferred Provider; see our Invisalign page.
Side-by-side comparison
| Bonding | Porcelain veneers | Invisalign | |
|---|---|---|---|
| How it closes the gap | Adds resin to the teeth | Thin porcelain shells reshape the teeth | Moves the teeth together |
| Enamel removed | Little or none | Usually a thin layer | None |
| Also changes color/shape | A little | Yes | No (whitening can be added) |
| Best for | Small gaps, healthy teeth | Gaps plus other cosmetic concerns | Several gaps or bite issues |
| Durability | Good; may need touch-ups | Very good | Lasting with a retainer |
Combining treatments
Sometimes the best result uses more than one approach. For example:
- Invisalign to bring the teeth closer, then small bonding to fine-tune the shape.
- Orthodontics to spread a large space evenly, then veneers so each tooth looks proportional.
- Treating the gums first, then deciding on cosmetic options once they're stable.
Our guide on veneers vs. Invisalign explains how to weigh the two.
What about the frenum?
If a thick frenum is holding the teeth apart, the gap may reopen after closing unless the frenum is addressed. A small procedure called a frenectomy can release it. Whether you need one, and when, is a decision your dentist and orthodontist make after examining you.
Questions to ask at your consultation
- What caused my gap, and is it stable or growing?
- Are my gums healthy?
- Would bonding make my front teeth look too wide?
- Would orthodontics give a better result than veneers in my case?
- Will the gap come back, and what keeps it closed?
- Can I see a preview of the result first?
The bottom line
A gap between the front teeth is common, often harmless and very treatable. Small gaps on healthy teeth often do well with bonding; gaps combined with color or shape concerns often suit veneers; multiple gaps or bite problems often call for orthodontics. Start by finding the cause, make sure your gums are healthy, and choose the option that fits your smile — or keep your gap if you love it.
Art Dental Studio offers complimentary consultations at three South Florida locations — Miami, Cooper City and Kendall — with bilingual care in English and Spanish. Orthodontics, periodontics and cosmetic dentistry work together under one roof, and every porcelain veneer is hand-crafted in-house by master ceramist Enrique, under the direction of Dr. Vivian Menendez (DMD · ADA · AACD · Invisalign Preferred Provider).
Frequently asked questions
What is the best way to close a gap between front teeth?
It depends on the gap and its cause. Small gaps on healthy teeth often do well with bonding, gaps plus color or shape concerns often suit veneers, and several gaps or bite problems often call for orthodontics like Invisalign.
Can a gap between my teeth come back after it's closed?
Yes, it can. After orthodontics, a retainer helps keep the space closed. If a thick frenum is holding the teeth apart, it may need to be addressed. Your dentist explains what keeps your result stable.
Should I worry about a new gap between my teeth?
A gap that is new or getting bigger in an adult should be checked. It can be a sign of gum disease or a bite problem, so it's a health question first and a cosmetic one second.
