Recommendations for the care of MCT instruments

The cost of maintaining the instrument is not high.

Paying constant attention to the observance of the rules for care and sterilization, you prolong the working life of the instruments.


The processing of medical devices consists of the following main stages:

  1. preparation (pre-treatment, pre-cleaning and, if necessary, disassembly);
  2. cleaning, disinfection, final rinsing and drying;
  3. visual control of the cleanliness and impeccable condition of the material;
  4. care and maintenance if necessary;
  5. performance check; 
  6. packaging, labeling and sterilization, authorization for use and storage (if required).


Option for caring for MCT instruments in the clinic:

  1. Pre-sterilization cleaning (hard and metal brushes and abrasive substances are not used) and disassembly as needed;
  2. Soaking in 4% Gigasept solution for 30 minutes;
  3. Rinsing in running water under a strong stream for 5 minutes;
  4. Soaking in distilled water for 2 minutes;
  5. Drying until completely dry (with a towel, napkin, using compressed air);
  6. Autoclave for 30 minutes at 121 ° C or according to autoclave instructions / program.


Basic rules for the care of instruments: 

  • Before the first use, new and refurbished tools must go through the entire processing process similar to used tools. Mr. Curette Tech recommends sterilizing a new instrument at least 5 times separately from the one in the clinic.
  • New instruments must be removed from the transport packaging. In this case, you must remove all protective caps and protective film.
  • Strictly observe the concentration of chemical solutions and the exposure time for immersion disinfection.
  • After soaking and washing, thoroughly soak the instrument in demineralized (distilled) water. Caution: Residuals of chemicals and chlorine on the instrument lead to pitting corrosion when heated further during sterilization.
  • It is recommended to carry out pre-sterilization processing of instruments (disinfection, washing, drying) automatically in a closed cycle mode, using a thermal disinfector for this. Drying with compressed air is the most efficient and gentle drying.
  • Only insert perfectly dried instruments into the autoclave. Residual moisture can lead to streaks and cloudiness of the instruments.
  • It is forbidden to sterilize stainless steel dental and surgical instruments together with chrome-plated ones, as a potential difference is formed, which contributes to the formation of rust.
  • To avoid stress corrosion, disinfect, sterilize and store extendable instruments (scissors, nippers, forceps, needle holders, etc.) only in an open state.
  • The pin holder is autoclavable with a protective cap on the working part.
  • To avoid corrosion caused by abrasion, use a special sliding tool lubricant.
  • Make sure that the instruments do not touch each other during processing and sterilization. The best option is to use cassettes.
  • Do not open the autoclave too quickly after sterilization. Ensure that the instruments cool down slowly and evenly.
  • Use only softened and demineralized water for autoclaving.
  • Check the interior surfaces of the sterilization equipment (autoclave) for signs of corrosion. If it appears, the walls of the chamber must be thoroughly cleaned, as corrosion is transferred to the instruments.
  • Preheat medical instruments in an autoclave (sterilizer), if possible, before steam sterilization to prevent excessive condensation on the surface of the instruments
  • Titanium meshes, screws, pins, orthodontic microimplants, anchor plates, ChLH plates manufactured by MCT and Jeil are supplied non-sterile and must undergo complete pre-sterilization cleaning and autoclaving at 134 ° C for 15 minutes before starting work, or, in special cases, according to the recommendations autoclave manufacturer.

In practice, over time, changes occur on the surface of various medical devices, caused by chemical, thermal and / or physical effects. The reason for these superficial changes, unless they have arisen directly during the application, in most cases is the processing process.


Rules for the care of sliding tools:

All instruments with movable handles must undergo all sterilization steps only in the open state!

  • Pre-sterilization treatment of scissors and needle holders (especially with carbide inserts) and autoclaving in a closed state will damage the working parts of the instrument. The temperature regime of the autoclave causes expansion of the metal and an increase in pressure on the working parts of the instrument and their damage.
  • If the instruments are not sterilized in a cassette, it is recommended to insert a cotton swab between the handles.
  • Use tools strictly for their intended purpose, as even a high-quality tool can become dull or damaged if it is not used for its intended purpose.
  • Only use needle holders with suture material with thread thickness that matches the markings on the needle holder in the manufacturer's catalog.
  • Avoid contact of the scissors with other instruments when they are being processed in the open position in ultrasonic baths. It is best to clean the scissors separately from other tools or in cassettes. Always remember to use the instrument appropriately (eg cloth scissors should not be used to remove stitches).
  • All instruments with movable handles must be lubricated prior to sterilization to protect against corrosion, rust, long instrument life and smooth handles.
  • Rough handling of tools in cases where scissors fall to the floor, or when the ends of the blades come in contact with other tools, can lead to micro-damage to the metal, which creates the risk of breakage during operation.
  • Chloride solutions (blood also contains chloride) of normal or high concentration can cause pitting, especially when the instrument is left in the solution for a long time and is not rinsed properly afterwards. Pitting corrosion leads to breakage, especially the ends of the scissor blades.


The main causes of tool corrosion are:

  • The use of abrasive substances and / and hard or metal brushes during the initial cleaning of the instrument.
  • Use of disinfectant solutions with a high content of chlorine or other halogens.
  • Prolonged soaking (exceeding the exposure time) of instruments in disinfectant solutions.
  • Insufficient rinsing of instruments after disinfection.
  • Poor drying of instruments.
  • Autoclaving of sliding instruments in a closed state (leads to deformation of the working parts of the instruments).

Most instruments are made of stainless steel and should not come into contact with the following chemicals for more than 30 minutes: sodium hypochlorite, tartic acid (to remove plaque), aluminum chloride, barium chloride, mercury chloride, calcium chloride, carbolic acid, chlorinated lime, citric acid , Dakin's solution, ferric chloride, lysol, mercury chloride, mercury salts, phenol, potassium permarganate, tin dichloride.

DO NOT allow stainless steel to come into contact with the following chemicals: aqua regia, ferric chloride, sulfuric acid, hydrochloric acid, iodine.

Carbon steel tools are more sensitive to chemical attack than stainless steel tools and require special handling. Carbon steel should not come into contact with the above chemicals. During the cleaning and sterilization phase, carbon steel instruments should be separated from stainless steel instruments. During sterilization it is recommended to use special solutions - rust inhibitors. If surface rust regularly appears on instruments after sterilization, the sterilizer must be rinsed.


Arising problems and their elimination during the ultrasonic processing of instruments:


Problem Cause Elimination
The appearance of stains Insufficient rinsing after ultrasonic cleaning Rinse thoroughly under a strong stream of water for 60 seconds.
Insufficient drying after ultrasonic cleaning Rinse with hot water. If necessary, immerse the cassette in alcohol after rinsing.
The solution for the ultrasonic bath was not changed The solution must be changed at least once a day.
The sterilizer has not been cleaned The sterilizer must be cleaned at least once a week.
Use distilled water for the sterilizer tank
Rust Corrosion from carbon steel tools has spread to stainless steel tools Separate carbon steel tools and stainless steel tools
Before sterilization, carbon steel instruments should be treated with a special anti-corrosion solution.
Pitting corrosion Exposure to chemical agents on instruments Rinse and dry instruments thoroughly. Use only recommended cleaning and sterilizing solutions.
Do not use household bleach or stain removers