Implementation of the dental nurse disinfection and sterilization of dental instruments
Asepsis - measures which aim to prevent the inclusion of infectious agents into the body during the execution of various therapeutic or diagnostic procedures.Of great importance from the viewpoint of sterilization has asepsis.Sterilization - a set of sequential processing stages tools.It includes disinfection, cleaning and proper sterilization.Disinfection - a set of measures, which aim to destroy pathogens in the environment.After work, the tools are placed in a container with a special disinfecting solution for an hour.As the hydrogen peroxide disinfecting solution -s 6%, 3% chloramine the solution "Virkon" "anolyte", etc. may be used. They are then washed in a special sieve and placed in a detergent solution heated to 50 ° C,for 15 minutes.The composition of the cleaning solution includes a detergent powder ( "Lotus", "Astra") - 5 grams of hydrogen peroxide (17-160 ml depending on the concentration) and distilled water (from 835 to 978 ml).Thereafter, in tools for 30 washed in detergent solution, in t
In the case of some disinfectants (for example, "FF Dekoneks 50", "Dental Dekoneks BB", "Lizafin" "Dezeffekt" et al.) Tools soaking in the wash liquor is not required.It is achieved by the combination of steps disinfection and cleaning.
to assess the quality of disinfection and purification of a number of samples required.The main of them - amidopirinovaya and phenolphthalein.For these samples from each batch of tools shown in 1-2% but not less than 3.5 tool.Amidopirinovaya sample provides a definition of blood residues on the instruments.It is necessary to conduct mixing equal amounts of 5% alcoholic solution amidopiprina and 3% hydrogen peroxide solution by adding a few drops of 30% acetic acid.The resulting reagent moistened cotton swab and wipe them with the tools.The syringes are placed 3-4 drops of indicator solution and make the piston movement to expose the syringe wall solution.After a minute the contents of the syringe output on a cotton swab or paper and evaluated.When the blue-violet staining test is considered positive.
phenolphthalein test is conducted to determine the quality of the cleaning tool cleaning solution.When used in the composition of the cleaning solution of detergent, "News", "biologist" phenolphthalein test unhelpful.For the sample on a cotton swab placed 1% alcoholic phenolphthalein solution and wipe them part randomly selected instruments as well as during amidopirinovoy sample.In case of insufficient washing of instruments from the detergent in 1 minute appears pink color.
sterilization of instruments is carried out by physical or chemical means.The physical methods include steam sterilization (autoclaving) in steam sterilizers, dry heat in dry-flame cabinets, sterilization using infrared, radiation exposure, the filtering method.
Steam sterilization is carried out in steam sterilizers, where the instruments are placed in special boxes.There are steam sterilizers with vertical load of tools, horizontal loading, as well as cluster steam sterilizers.There are two modes of steam sterilization.The first - under a pressure of 2 atmospheres, a temperature of 132 ° C for 20 minutes..II - at a pressure of 1.1 atm, a temperature of 120 ° C for 45 minutes..The first mode is sterilized glassware, textile, rubber;the second - latex, plastic, polyethylene.Control of sterilization by means of physical, chemical and bacteriological methods.Physical control is achieved by using a method in steam sterilizers thermometers and temperature control.Chemical control method involves the use of specific indicators: an indicator for the first mode is, for example, urea, nicotinamide, second - benzoic acid.
Dry Heat sterilization method dental instruments involves the use of drying ovens, which are placed tools, pre-packed in kraft bags.There are two modes of dry heat sterilization:. At 180 ° C for 1 hour and at 160 ° C for 2.5 hours, the same methods as used for the steam sterilization for sterilization of quality control.Indicators for the first mode are thiourea, tartaric acid, for the second - sucrose.
Chemical sterilization method involves the use of chemicals: 6% hydrogen peroxide -s (at room temperature for 6 hours, at a temperature of 50 ° C - 3 hrs) «Dezakson-1" (for 45 minutes), "glutaral," "CIDEX ".Using this method can perform sterilization of products from polymeric materials, glass and corrosion resistant metal, dental and other discs. After sterilization instruments should be rinsed in three reservoirs with water for 5 minutes.Tools remain sterile for three days.