Apicoectomy: Root End Surgery Explained
An apicoectomy is surgery at the tip of a root. The gum is lifted, a small window is made in the bone over the root end, the last few millimetres of the root and the infected tissue around it are removed, and the cut end of the root canal is sealed from the outside with a retrograde filling. The gum is then sutured back.
What apicoectomy and periradicular surgery involves
An apicoectomy is surgery at the tip of a root. The gum is lifted, a small window is made in the bone over the root end, the last few millimetres of the root and the infected tissue around it are removed, and the cut end of the root canal is sealed from the outside with a retrograde filling. The gum is then sutured back. It exists because some endodontic problems cannot be solved from inside the tooth — the canal may be blocked, the anatomy at the tip may be untreatable conventionally, a post may make retreatment impossible, or a persistent lesion may not resolve despite technically adequate canal work. Approaching from outside solves those.
When this treatment is used
Considered when conventional root canal treatment or retreatment has failed or is not feasible, and the tooth is otherwise worth keeping. Also used to biopsy a persistent periapical lesion and to repair root perforations from the outside.
What recovery is like
It is real oral surgery, performed under local anaesthetic, typically taking forty-five to ninety minutes. Expect swelling that peaks at around forty-eight hours, some bruising, and discomfort manageable with anti-inflammatories for several days. Sutures come out after about a week. Front teeth are straightforward to access. Lower molars are considerably harder — thick bone, nerve proximity — and upper molars sit close to the sinus. Success rates with modern microsurgical technique, magnification and calcium silicate retrograde fillings are good, considerably better than the figures quoted for older techniques, and the procedure has a much better reputation among endodontists now than it did a generation ago.
The per-root arithmetic
The first root is reported with the code for the tooth type, and each additional root on the same tooth with D3426. A three-rooted upper molar needing surgery on two roots generates one primary code and one additional-root code. Bone grafting (D3428), biologic materials (D3431) and guided tissue regeneration (D3432) are reported separately when used, and are common in larger defects. Coverage for those adjuncts is much less reliable than for the surgery itself.
Costs and insurance in summary
Typical fee range across the group: $0–$0 where a single band applies. Several codes here are priced individually and carry their own range on their own page. Priced as surgical endodontics, generally above conventional root canal treatment. Grafting materials and membranes add separate charges.
Benefit category: Major / surgical, typically 50–80% on a typical plan. Generally covered where endodontic or surgical benefits exist, often requiring pre-authorisation. Adjunctive grafting and membranes are frequently excluded.
Common restrictions: Pre-authorisation commonly required; Grafting and regenerative adjuncts are often not covered; May be denied if retreatment was not attempted or justified as unfeasible.
The codes this guide covers
Each of these describes a variant of the same procedure. Follow a code for its own fee range, its coverage notes and what distinguishes it from the rest of the group.
| Code | Variant | Typical fee |
|---|---|---|
| D3410 | Apicoectomy — anterior tooth — most reported | $900–$1,800 |
| D3421 | Apicoectomy — premolar (first root) | $1,000–$2,000 |
| D3425 | Apicoectomy — molar (first root) | $1,100–$2,300 |
| D3426 | Apicoectomy — each additional root | $350–$800 |
| D3427 | Periradicular surgery without apicoectomy | $800–$1,700 |
| D3428 | Bone graft with periradicular surgery (single site) | $400–$1,000 |
| D3430 | Retrograde (root-end) filling — per root | $300–$700 |
| D3431 | Biologic materials with periradicular surgery | $300–$800 |
| D3432 | Guided tissue regeneration with root surgery | $400–$1,100 |
Common questions
What is an apicoectomy?
Surgery at the root tip: the end of the root and the infected tissue around it are removed through the gum, and the cut canal is sealed from the outside.
Is an apicoectomy painful?
It is done under local anaesthetic and is not painful during the procedure. Swelling peaking around two days afterwards and several days of manageable discomfort are normal.
How successful is root end surgery?
With modern microsurgical technique and calcium silicate sealing materials, success rates are good — substantially better than older figures suggest.
Why have surgery instead of redoing the root canal?
When the canal cannot be re-accessed — a cemented post, a blocked canal, an expensive new crown — or when the canal work is already technically sound and the problem lies at the root tip.