Even with the risk of failure and costs associated with endodontic treatment, it is much cheaper and better to treat a tooth with a root canal than to decide to have it removed. Tooth extraction involves not only higher costs, but also greater consequences for the patient. The gap left by the extracted tooth should be filled by introducing an artificial root, i.e. an implant, and then restoring the tooth crown on it – which costs at least several thousand PLN. If the patient does not replace the resulting gap, it may lead to irreversible changes in the neighboring teeth and bone loss over the next few years, which will have adverse consequences for the health of the oral cavity.