Service 02

Non-Surgical Re-Treatment.

A root canal that failed is not the end of the tooth. In most cases we can reopen it, find what was missed and seal it properly — without surgery and without an implant.

Comparison of a failing earlier root canal filling and the same tooth after re-treatment — Left: an earlier treatment with a missed canal and persistent infection. Right: every canal located, cleaned and sealed.

Why Treatments Fail

Usually it is anatomy, not bad luck

Root canals have a very high success rate. When one does not heal, there is almost always a specific, findable reason.

Molars frequently have four canals rather than three, and the extra one — the second mesiobuccal canal in an upper molar is the classic example — is tucked under a ledge of dentin where it is genuinely hard to see without a microscope. If it is never found, it is never cleaned, and the infection simply continues in the part of the tooth nobody treated.

The common reasons a tooth needs re-treatment

A canal was never located — narrow, curved or calcified
The filling stopped short of the root tip, leaving infected tissue behind
The permanent crown was delayed and bacteria leaked back in
A crown or filling broke down, or new decay reached the canal
A new fracture developed years after successful treatment

Failure can appear decades later, and often without pain — a shadow on a routine x-ray is a very common way for it to be found.

What re-treatment involves

The crown or filling is carefully taken apart, and any post is removed. The old gutta-percha and sealer are dissolved and removed from every canal. Then the search begins: under high magnification we look for the canal that was missed, negotiate blockages and ledges, and take the whole system back to full working length. Finally it is disinfected, re-filled and sealed, and you return to your dentist for a new restoration.

It takes longer than a first-time root canal and it demands more patience — which is precisely why it belongs with a specialist. It is also considerably less invasive and usually less expensive than extraction followed by an implant and crown.

1–2Visits, typically

No surgeryIn the majority of cases

Your toothKept, not replaced

The Alternative

Re-treatment or implant?

Both are legitimate options and we will discuss both. But the comparison is rarely as even as it first sounds.

Keeping your own tooth

A natural tooth sits in a periodontal ligament — it has proprioception, so you can feel how hard you are biting. It moves fractionally with the teeth beside it. It cannot develop peri-implantitis. And if re-treatment does not work, microsurgery and then extraction are still available afterwards.

Replacing it

An implant is an excellent restoration and sometimes the right answer — particularly where the tooth is fractured below the bone or structurally beyond repair. But it means surgery, months of healing, a crown on top, and a decision that cannot be undone. Once the tooth is out, it is out.

Our rule of thumb: if the tooth has enough sound structure to be restored and the fracture has not reached the bone, it is worth trying to keep.

Bring the tooth everyone gave up on

Send your x-rays ahead or bring them with you — we will review them before you sit down.

Request a Consultation Call 908-561-3669