D2331 — Composite filling — two surfaces, front tooth
A composite restoration on a front tooth is a bonded, tooth-coloured repair. D2331 is the two-surface version.
One of four composite restoration, anterior tooth codes. If you are trying to understand the treatment, start with the composite restoration, anterior tooth guide; if you are trying to understand this line on your estimate, you are in the right place.
What the code requires, what it costs, how it is paid, and how to tell it from its neighbours — each in its own section below.
The conditions built into D2331
Extent — two surfaces. Two surfaces means the restoration turns a corner and has to rebuild the contact against the neighbouring tooth. Recreating that contact — tight enough to hold floss, loose enough to let it pass — is what makes it harder than a one-surface repair, not the extra material.
Material — tooth-coloured composite resin. Composite is a resin filled with glass particles, placed soft and hardened with a blue curing light in layers. It bonds chemically to enamel and dentine, so the preparation can follow the decay instead of being cut to a retentive shape, and less sound tooth is lost. The trade-offs are technique sensitivity — the tooth has to be dry and isolated for the bond to work — and a shorter working life than amalgam under heavy chewing load, typically seven to twelve years on a back tooth. The material is part of the code rather than a choice made afterwards, so D2331 is only the right code if that is what was actually used.
Tooth — a front tooth, where shade, translucency and the shape of the edge matter as much as strength.
Counted — per site rather than per tooth. What counts as a single site is the detail that gets argued about on these claims.
Told apart from the codes it is confused with
D2330 — Composite filling — one surface, front tooth: It covers a single surface instead of two surfaces.
D2332 — Composite filling — three surfaces, front tooth: It covers three surfaces instead of two surfaces.
D2335 — Composite filling — 4+ surfaces, front tooth: It covers four or more surfaces instead of two surfaces.
Those three codes and D2331 are the whole group — nothing else describes this procedure. These distinctions exist because they change what was actually done. A claim for D2331 when the record describes one of the others is not a technicality — it is the difference between a paid claim and a returned one.
Every code in this group
These codes describe the same broad procedure and differ in one respect each. Each has its own page with its own fee range and coverage notes.
| Code | Procedure |
|---|---|
| D2331 | Composite filling — two surfaces, front tooth — this page |
| D2330 | Composite filling — one surface, front tooth |
| D2332 | Composite filling — three surfaces, front tooth |
| D2335 | Composite filling — 4+ surfaces, front tooth |
Questions about D2331
What is D2331 on my dental bill?
Composite filling, two surfaces, front tooth, reported under a single restorative code.
What should I expect to pay for D2331?
Plan for $215–$505 as the full fee. Two practices a few miles apart can sit at opposite ends of that range for the same work.
Will my plan pay for D2331?
Yes on most policies, treated as basic work at typically 70–80% after deductible. A waiting period on a new policy is the commonest reason it is not.
What is the difference between D2331 and D2330?
D2330 is composite filling, one surface, front tooth: it covers a single surface instead of two surfaces. Apart from that, the two describe the same treatment — which is why the notes for the visit matter more here than the code itself.
Also known as: white filling, composite bonding, front tooth filling, tooth-coloured filling, chipped tooth repair.