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Root Canal Treatment (Endodontics)

Broken instrument in tooth

During endodontic treatment, the dentist uses fine instruments to clean the canals. In some cases, however, the instrument may break in the canal.

During endodontic treatment (root canal cleaning), the dentist uses fine instruments to clean and shape the canals. In some cases, however, the endodontic instrument may break in the canal. This is an unpleasant complication, but it does not always mean the loss of the tooth.

Why do instruments break?

  • Tooth anatomy – some root canals are very narrow or curved.
  • Fragility of instruments – modern instruments are very thin and prone to breaking.
  • Repeated use of the instrument – the more often the instrument is used, the greater the risk of breakage.
  • Excessive pressure during treatment.

What are the possible consequences?

  • No complications – if the fragment of the instrument does not block the canal and the tooth can be cleaned well, the presence of a broken instrument may not have any negative effects.
  • Complications – if the instrument prevents the infected canal from being cleaned, it can lead to incomplete removal of the infection and the development of inflammation or a dental abscess.

How is a broken instrument in a tooth treated?

We work precisely, using a microscope and high-quality instruments, so nothing like this happens at The Clinic. However, we often see patients who have encountered this problem and ask us to resolve it.

Treatment options depend on the specific situation:

  1. Observation and monitoring – if the tooth shows no signs of inflammation and the broken instrument does not pose a risk.
  2. Removal of the fragment – the broken instrument can often be removed using special endodontic instruments or a microscope.
  3. Bypassing the instrument – the dentist will attempt to clear the canal by another route.
  4. Surgical procedure (apical resection) – part of the root is removed along with the instrument fragment.
  5. Tooth extraction – if the tooth cannot be saved in any other way, it is extracted.

Can instrument breakage be prevented?

The risk can be reduced by:

  • Using high-quality disposable instruments.
  • Treatment under a dental microscope.
  • Gentle procedures and the experience of the endodontist.

A broken instrument in the tooth represents a potential complication during endodontic treatment despite careful work. Modern dentistry provides various solutions -- from fragment extraction to surgical intervention. Prompt evaluation by an experienced dentist proves essential to preserving the tooth and avoiding additional complications.

This article is for informational purposes only and does not replace an in-person examination. If you have a specific concern or question, get in touch with our team — we will be happy to invite you for a consultation.

Book a consultation with our doctor

MDDr. Jakub Hladík

Author

MDDr. Jakub Hladík

Specialist in Microscopic Dentistry

MUDr. Daniel Ott

Medically reviewed by

MUDr. Daniel Ott

Specialist in Microscopic Endodontics

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