For heavily contaminated oral machinery, pre-treatment is required prior to routine disinfection, as the residue on the surface of the machinery has dried up, if it is not recovered in time. Will need to be pre-treated oral machinery immersed in chlorine disinfectant for about 30 minutes, after water rinse, and cleaning effect test card *** with the placement of the mechanical cleaning basket, and immersed in the pre-treatment machine, in order to improve the effectiveness of the mechanical cleaning, but also to add a certain concentration of detergent, vibration cleaning 4 minutes to 6 minutes, will be cleaned out of the basket from the machine, check the test card. For pretreatment qualified oral instruments into the cleaning and disinfection machine to wait for the next step of cleaning [2].
2.2 Pretreatment to improve the quality of cleaning
Oral instruments are pretreated not as a substitute for routine disinfection, but rather as a pretreatment due to the difficulty of thoroughly cleaning heavily contaminated oral instruments using routine cleaning procedures. The cleaning agents used in the pretreatment process should avoid strong acids or alkalis, and the operator should wear insulated gloves to ensure that all instruments have access to the cleaning agent.
If the sterilizer used is a fully automatic sterilizer, the cleaning machine can be set up according to the need for instrument cleaning, placed in the cleaning chamber of the oral instruments for the large water jet rinsing, in order to remove the residue on the surface of the instruments. After the residue is cleaned, the surface of the oral instruments is rinsed with hot water at more than 90° C. to effectively sterilize the oral instruments, and finally the sterilized oral instruments are placed in a hot air dryer to dry the instruments. As a result, the residues and pathogenic microorganisms remaining in the oral instruments are completely eliminated[