1. High temperature and high pressure disinfection method
High temperature and high pressure disinfection method is a common and effective disinfection method. For Platinum primary tooth file, it has a certain high temperature resistance. During high temperature and high pressure disinfection, Platinum primary tooth file is usually placed in a special medical disinfection equipment, and the appropriate temperature, pressure and time parameters are set. Generally speaking, the temperature can be set between 121-134℃, the pressure is around 103-207kPa, and the disinfection time is about 15-30 minutes. Due to the high chemical stability of platinum, no chemical reaction will occur in such a high temperature and high pressure environment to cause performance changes. This disinfection method can effectively kill various microorganisms such as bacteria, viruses, fungi, including stubborn microbial forms such as spores. Moreover, high temperature and high pressure disinfection is a physical disinfection method, which does not introduce the risk of chemical disinfectant residues, which is very important for Platinum primary tooth file used in the mouth, and can ensure that no harmful substances are brought into the patient's mouth during root canal treatment of deciduous teeth. However, after multiple high-temperature and high-pressure disinfection, although the performance of platinum itself is stable, it is also necessary to pay attention to whether the physical structure of the deciduous tooth file is deformed, so regular inspection is required.
2. Chemical disinfection method
Chemical disinfection is also one of the disinfection methods that can be used for Platinum primary tooth file. For example, ethylene oxide can be used for disinfection. Ethylene oxide has strong penetrability and can penetrate into various parts of Platinum primary tooth file to kill possible microorganisms. When using ethylene oxide for disinfection, it is necessary to strictly follow the operating procedures, place the deciduous tooth file in a suitable disinfection container, and control the concentration, temperature, humidity and disinfection time of ethylene oxide. Generally, the disinfection time is long, which may take several hours to dozens of hours. In addition, glutaraldehyde solution can also be used for disinfection. Glutaraldehyde solution has high bactericidal ability and has a good killing effect on a variety of microorganisms. Soak the Platinum primary tooth file in a glutaraldehyde solution of appropriate concentration. The soaking time depends on the concentration of the solution and specific requirements, usually 10-30 minutes. However, chemical disinfection has the risk of chemical disinfectant residues. After disinfection, the Platinum primary tooth file needs to be fully cleaned to ensure that it will not cause chemical damage to the patient during use. At the same time, some chemical disinfectants may cause certain corrosion or impact on the surface of the Platinum primary tooth file, so be careful to choose the appropriate disinfectant and the correct disinfection parameters.
3. Dry heat disinfection
Dry heat disinfection is also applicable to Platinum primary tooth file. Dry heat disinfection is to kill microorganisms by heating air and using the heat of hot air. Usually, the Platinum primary tooth file is placed in a dry heat disinfection box, the temperature is set at about 160-180℃, and the disinfection time is about 1-2 hours. The advantage of dry heat disinfection is that it is a relatively simple disinfection method without chemical residues. Due to the high temperature resistance of platinum, no material changes will occur within this temperature range. However, the disinfection time of dry heat disinfection is relatively long, and the heat transfer is relatively slow. For some complex or thick Platinum primary tooth files, special attention may be needed to ensure the thoroughness of disinfection. In addition, dry heat disinfection may cause slight oxidation on the surface of the Platinum primary tooth file under long-term high temperature. Although this oxidation has little effect on the overall performance of platinum, proper inspection is still required after disinfection to ensure that the surface quality of the primary tooth file will not affect its use in root canal treatment of primary teeth.