Generally, if the broken root canal needle does not cause inflammation, it can be considered not to be removed, but if it does cause inflammation, the broken needle should be removed.
Usually, if the broken root canal needle does not affect the root canal greatly or does not cause inflammation, it can not be removed, and the broken needle can be used as a filling material to be stored in the root canal.
If the broken needle is at the root canal opening, it is relatively easy to remove and it is usually recommended to do so. If the location of the broken pin is difficult to remove, and there are implications of not removing it, it is usually recommended to remove the broken pin by ultrasonic oscillation or apical surgery.
If it is determined that the root canal needle is broken inside the case, it is recommended to go to the regular hospital as soon as possible to standardize the treatment, in order to reduce the adverse effects of the disease.