Recently, the Dentistry and Pulp Department of Beijing Stomatological Hospital received a praise work order from the "municipal government 12345". The patient, Ms. Zhang, expressed her gratitude to "Fu Mei, the Chief physician of the Dentistry and Pulp Department of Beijing Stomatological Hospital and his team for their superb medical skills" by leaving a message on the Internet. It turned out that Ms. Zhang unfortunately encountered a "broken instrument", commonly known as a "broken needle", while undergoing root canal treatment at a clinic. As a result, she went to multiple medical institutions but was unable to succeed. Some doctors say that "the condition of the teeth is no longer suitable for extraction" and "re extraction may cause irreversible damage to the teeth". Broken needle, should I take it or not? Originally, it was just root canal therapy, but in the end, the teeth couldn't be saved, it's not worth it! Do you really want to accept this broken needle buried deep in your teeth and live with it forever? Later, Ms. Zhang learned that Beijing Dental Hospital has a specialized "needle taking clinic". She said, "At that moment, I seemed to find hope, and I wanted to try again." "Needle taking clinic", which is called "special clinic for treatment of broken instruments in root canals", was led by Fu Mei, the Chief physician of the Department of Dentistry and Pulp, and was specially responsible for the treatment of metal foreign bodies in root canals, that is, "broken needles". Broken needle "is one of the common complications in root canal therapy. This type of instrument fracture caused by root bending, instrument fatigue, and other reasons often occurs in clinical treatment, which is a problem that troubles dentists and patients. After a detailed oral examination, Fu Mei learned about the patient's oral condition and explained the possible problems of the operation. "The operation is difficult, and in some medical institutions it is even a Contraindication, but I think it is still possible to take it out." To Ms. Zhang's regret, "the needle that cannot be taken out in the external hospital for more than four hours", Fu Mei unexpectedly took out more than 10 minutes. It is reported that under the leadership of Professor Hou Benxiang, the Dental and Pulp Department of Beijing Stomatological Hospital opened a specialized outpatient clinic for the treatment of root canal separation instruments in 2016. As the only specialized outpatient clinic of "endodontic separation device treatment" in North China, the annual outpatient volume exceeds 300, mainly from peer referral cases, most of which are apical separation devices, of which the success rate of removal of apical separation devices is 85%, far higher than the 15% -59% reported in the literature. At present, the team members of the specialist clinic include Professor Hou Benxiang, Fu Mei, Chief physician, and Dr. Guo Jia. The team mainly receives cases of root canal separation devices and is committed to clinical treatment strategies for separation device cases. They are particularly skilled in the extraction technology of separation devices, especially minimally invasive extraction of separation devices in the apical region. Fu Mei said that "broken needles" in the teeth are a common complication in treatment. He hopes that doctors and patients can work together to create a harmonious and warm medical environment, and work together to preserve every natural tooth.