Here we say “people”, refers to the dental patients, “machine” refers to the dental handpiece for dentistry (the “handpiece” here does not refer to our general communication with the The “machine” refers to the dental handpiece for dentistry (the “handpiece” here does not refer to the cell phone used for general communication), which is the dental drill used for drilling, and the section usually grasped in the hand of the dentist is called “handpiece”. Dental handpieces work in and out of the patient’s mouth, and are the most easily contaminated and most polluted oral instruments. If it is not thoroughly disinfected, it will become a serious source of infection, causing terrible consequences such as cross-infection. An important reason why many patients are afraid to go into the dentistry is that they are afraid of dental handpieces. They are afraid of the pain of drilling, but they are also afraid that the dental handpieces used by many patients are too dirty and they are afraid of contracting infectious diseases as a result! As medical knowledge becomes more widespread, people become more health conscious and pay more attention to the quality of life, more and more patients are having such fears and asking such questions. Indeed, this fear is very justified. If the instruments in dentistry are not thoroughly sterilized, they may become “killers” for the health of patients and staff during the examination and treatment process! In addition to infecting people with diseases transmitted through the digestive tract, such as hepatitis A, diseases transmitted through the bloodstream, such as hepatitis B and AIDS, can also be transmitted through dental handpieces. This is because the exposed dental pulp, bleeding gums, ulcers or small abrasions of the oral mucosa can become the entrance to blood-borne infections. In recent years, following the emergence of single-use medical syringes and their widespread use, disposable instrument cases (including mouth mirrors, probes, forceps, plates, scarves, tissues, etc.) used in dentistry have also been commonly used. However, due to the special nature of dental handpieces, “single-use handpieces” have not been achieved worldwide. This is because the price of dental handpieces is relatively expensive, the price of ordinary dental handpieces also cost about RMB 1,000 yuan, and imported dental handpieces with lighting fiber optics often cost tens of thousands of yuan. It is impossible to add this cost to the patient’s treatment fee. As there are miniature ball bearings and rubber or plastic washers inside the dental handpiece, its rotation speed can reach hundreds of thousands of revolutions per minute, if it is sterilized by ordinary high-temperature autoclaves, it will soon damage the dental handpiece; if it uses the drug immersion method, it will also cause corrosion and rotation failure of the dental handpiece. Other methods of sterilization, such as scrubbing with 75% alcohol, irradiation with ultraviolet light, or rapid sterilization with heated quartz beads at high temperature, are not reliable for sterilization of dental handpieces. In recent years, manufacturers have produced a special high-temperature, high-pressure steam sterilizer for dental handpieces that can control the sterilization temperature at 134°C. This temperature can sterilize without damaging the gasket of the dental handpiece, which makes the dental handpiece “one person, one machine” and “one person, one use, one sterilization This is what makes the “one person, one machine” and “one person, one use, one sterilization” program for dental handpieces possible. Nowadays, the method commonly used in hospitals is to pre-clean dental handpieces by ordinary methods by dripping them with machine oil, putting them in special plastic bags, sealing them with a sealing machine, putting them in a special sterilization pot for dental handpieces and then saving them for use. The plastic bag is opened on site only when the patient uses it. Disinfection using this method is reliable. Although this method will shorten the life of dental handpieces compared to the alcohol scrubbing method, it is necessary and worthwhile for safeguarding the health of dental patients. Please note that “one person, one machine” and “one person, one use, one sterilization” has become a mandatory national regulation, whether it is a large hospital or a small clinic, must do “one person, one machine”, otherwise it is a violation. Otherwise, it is a violation of the operation. Perhaps one day, people will invent low-cost plastic dental handpieces and other instruments, just like the short-term use of plastic movement table, to achieve the “disposable dental handpieces” that can be discarded after use.