Dental Bonding for Gaps Between Teeth: Cost, Results, and Alternatives
Gap closure is the second most common reason people get dental bonding. It is fast, affordable, and does not require braces. But it has limits. Here is what works and what does not.
Updated 16 April 2026
Per Tooth
$200-$400
Gap closure bonding
Per Gap (2 teeth)
$400-$800
Closing one gap usually involves two teeth
How Gap Bonding Works
The dentist adds composite resin to one or both teeth on either side of the gap, widening them slightly until the gap is closed. The resin is shaped to look like a natural extension of the tooth. For small gaps, only one tooth may need treatment. For larger gaps, both teeth are widened equally.
Best results for:
Small gaps under 2mm. The front teeth gap (diastema) between the two upper central incisors is the most common gap treated with bonding. Results are immediate and the procedure takes 30 to 60 minutes per tooth.
When Bonding Works vs When It Does Not
Bonding works well for:
- Gaps under 2mm
- Single gap between front teeth (diastema)
- Patients wanting a same-day result
- Budget-conscious patients
- Patients wanting a reversible option
Consider alternatives for:
- Gaps over 2-3mm (orthodontics better)
- Multiple gaps throughout the mouth
- Gaps caused by missing teeth
- Patients wanting maximum durability
- Gaps accompanied by bite alignment issues
Bonding vs Braces vs Invisalign for Gaps
The gap closure method you choose depends on gap size, budget, and how permanent you want the result to be.
| Bonding | Braces | Invisalign | |
|---|---|---|---|
| Cost (single gap) | $400-$800 | $3,000-$7,000 | $3,000-$8,000 |
| Treatment time | 1 hour | 12-24 months | 6-18 months |
| How it works | Adds material | Moves teeth | Moves teeth |
| Permanence | 5-10 years | Permanent* | Permanent* |
| Reversible | Yes | No | No |
| Max gap size | 2-3mm | Any size | Any size |
*Braces and Invisalign require a retainer to maintain results. Without a retainer, gaps can reopen over time.
Diastema: The Front Teeth Gap
A diastema (gap between the two upper front teeth) is the most common gap treated with bonding. It affects roughly 1 in 5 adults and is often a purely cosmetic concern. Bonding is the most popular treatment because it is fast, affordable, and preserves tooth structure.
Cost for diastema closure: $400 to $800 (two teeth treated). Time: approximately 1 hour. The result is immediate. No braces, no waiting, no enamel removal.
Durability for Gap Closure
Honest note: gap bonding may chip more easily than chip repair bonding. When closing a gap, the resin extends the tooth width, creating thinner edges at the contact point. These edges are more vulnerable to chipping, especially if you bite hard foods directly. Average lifespan for gap bonding: 5 to 8 years.
Common Questions
How much does gap bonding cost?
$200-$400 per tooth. Closing one gap typically costs $400-$800 because both teeth flanking the gap are usually treated.
How big a gap can bonding close?
Up to about 2mm reliably. Gaps up to 3mm are possible but create thinner, more chip-prone edges. Gaps over 3mm are better suited to orthodontics or veneers.
Is bonding or braces better for gaps?
Bonding is faster (1 hour vs 12-24 months) and cheaper ($400-$800 vs $3,000-$8,000). But braces actually move teeth, which is more permanent. Bonding adds material that needs replacing every 5-10 years.
Considering veneers for larger gaps?
Bonding vs veneers comparison →Full bonding procedure details
Step-by-step process guide →