A peg lateral is a small, cone-shaped upper lateral incisor, the tooth beside each front tooth, and it is one of the most common cosmetic tooth-shape differences. Between two and five percent of people have one or both, and it is slightly more common in women. It is a healthy tooth that simply formed smaller and more pointed than usual, and where the shape bothers someone, it can usually be reshaped conservatively with composite bonding or veneers.
Key takeaways
- A peg lateral is a small, cone-shaped lateral incisor, a mild form of microdontia.
- It affects roughly two to five percent of people and often runs in families.
- The tooth is healthy. Treatment is optional and about appearance.
- Composite bonding is the most conservative fix. Veneers offer a longer-lasting result.
What a peg lateral is
The lateral incisors are the teeth immediately either side of the two central front teeth. A peg lateral is one that formed narrower and more cone-shaped than normal, with its sides converging toward the tip. It is a mild, localised form of microdontia and is the single most common example of a small tooth. Peg laterals can appear on one side or, slightly more often, on both. They tend to run in families and are frequently associated with other developmental differences such as a missing lateral incisor on the other side, which is why a dentist looks at the whole smile rather than the one tooth.
Why peg laterals happen
Peg laterals are a developmental variation in how the lateral incisor formed, and genetics are the main driver. The same genetic tendency that produces a peg lateral on one side can produce a missing lateral incisor on the other, so the two often appear together in families. There is nothing a parent could have done to prevent it, and it does not reflect any problem with dental care. Because it is developmental, it becomes apparent once the adult lateral incisors come through in later childhood. Our guides on microdontia and missing teeth explain the wider pattern.
Treatment options
Treatment is elective and centres on rebuilding the tooth to match its neighbours. The table compares the main options.
| Option | What it involves | Good to know |
|---|---|---|
| Composite bonding | Tooth-coloured resin sculpted onto the tooth in one visit | Most conservative, reversible, easy to repair, lower cost than porcelain |
| Porcelain veneer | A thin custom shell bonded to the tooth | Durable and stain-resistant, can last many years, needs minor preparation |
| Crown | A cap over the whole tooth | Used when more structure or coverage is needed |
| Orthodontics first | Aligning teeth and setting the right space | Often done before reshaping so the result is balanced |
Bonding or veneers for a peg lateral?
Composite bonding is usually the first choice because it re-establishes the tooth shape without removing any healthy tooth structure, is completed in a single visit, and can be adjusted or repaired easily. It is also the more affordable route. Veneers are a good option where someone wants a longer-lasting, highly stain-resistant result and is comfortable with a small amount of enamel preparation. In many cases braces or aligners are used first to position the teeth and open the correct space, so the final bonded or veneered tooth looks natural and symmetrical. The best choice depends on the space available, the neighbouring teeth and personal preference. You can read more on our composite bonding page.
Frequently asked questions
Is a peg lateral unhealthy?
No. It is a healthy tooth that simply formed smaller and more pointed. Treatment is entirely optional and about appearance.
What is the best way to fix a peg lateral?
Composite bonding is the most conservative and is often the first choice. Veneers suit people wanting a longer-lasting, stain-resistant result. The right option depends on the individual.
How long does bonding on a peg lateral last?
Composite bonding can last several years and is easy to repair or refresh. Porcelain veneers generally last longer but involve a little enamel preparation.
Will I need braces as well?
Sometimes. If the spacing is uneven, aligning the teeth first creates the right space so the reshaped tooth looks balanced. Many people need only bonding.
Can a peg lateral be treated in children?
Interim bonding is sometimes done for confidence, with definitive treatment usually left until the teeth and gums have matured. A dentist can advise on timing.
If a small or pointed tooth in your smile bothers you, the team at Lumi Dental in Melrose Park can talk through the options and what would suit you. Book a complimentary cosmetic consultation through our free cosmetic consult page. We do not publish prices in our articles and are happy to provide a written estimate after an examination.
This article is general information only and is not a substitute for personalised dental advice. Please see a dentist about your own situation.
