Half a month after surgery for a jaw cyst, a root canal of the associated tooth cannot usually be successfully completed. It is possible to do a root canal when there are problems with other teeth in the mouth that are not related to the jaw cyst. Root canals should be done on the affected teeth before jaw cyst surgery. Jaw cysts are cysts that occur within the jawbone. Depending on the source, they can be categorized into odontogenic jaw cysts and non-odontogenic jaw cysts. Clinically, odontogenic jawbone cysts are most common, such as root-end cysts, initiation cysts, tooth-containing cysts, keratocysts, etc., and their treatment is based on surgical removal. Because odontogenic jaw cysts occur in association with tooth-forming tissues or teeth, preoperative or postoperative root canal treatment of the involved teeth is required for jaw cysts. Clinically, most jaw cysts are treated with root canal treatment of the affected teeth before surgery and apicoectomy during surgery to prevent recurrence of the cyst. If the root canal treatment of the tooth concerned is not done before the surgery for jawbone cyst, the apical tissues will have been destroyed due to the apicoectomy to be done during the surgery, and the root canal treatment of the tooth concerned cannot be completed successfully half a month after the surgery, which will easily lead to the recurrence of the cyst and so on. However, it is possible to do root canal treatment when other teeth in the mouth have problems. If you find a cyst in your jawbone, you should consult a doctor in time, complete the examination, clarify the cause and diagnosis, and standardize the treatment under the guidance of a professional doctor.