Legal analysis: when medical institutions carry out operations, special examinations or special treatments, they must obtain the consent of patients, and should obtain the consent and signature of family members or units; When patients' opinions cannot be obtained and no family members or related personnel are present, or other special circumstances are encountered, the attending physician will put forward a medical treatment plan, which will be implemented after being approved by the person in charge of the medical institution or the authorized person in charge. Article 10 of the Basic Code for Medical Record Writing clearly stipulates that the consent form shall be signed by the patient himself, by his legal representative when the patient has no full capacity for civil conduct, by his close relatives when the patient is unable to sign due to illness, and by his related party if there is no close relatives. In order to rescue patients, if the legal representative or close relatives or related parties cannot sign in time, the person in charge of the medical institution or the authorized person in charge may sign. If it is not appropriate to explain the situation to the patient due to the implementation of protective medical measures, it shall inform the patient's close relatives, who shall sign the consent form and record it in time. During the treatment, there may be temporary changes in the contents or methods of the operation, such as root canal therapy. The scheduled root canal therapy is inconsistent with the doctor's situation after endodontic treatment, so it is necessary to add or temporarily change the treatment content and method. In this case, dental clinics and dentists should still obtain the consent of the patients themselves.

Legal basis: Article 11 of the Regulations on Handling Medical Accidents. In medical activities, medical institutions and their medical staff should truthfully inform patients of their illness, medical measures and medical risks, and answer their inquiries in time; However, adverse consequences for patients should be avoided.