Поддръжка на денталните ротиращи инструменти

51

Указания за употреба

■ В случай на силно замърсени инструменти, почистването трябва да се извършва с ултразвук.

52

Instructions for use

• 
  Only handpieces, turbines and contra-angles that are in perfect technical and hygienic condition may be used.
  
• 
  The instrument must be rotating at the appropriate speed before contact is made with the workpiece, tissue, etc.
  
• 
  Chuck the instruments as deeply as possible.
  
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  Avoid jamming and using the instrument as a lever as this increases the risk of breakage.
  
• 
  Wear safety goggles wherever required.
  
• 
  Avoid unprotected contact with the instruments, the use of protective gloves is strongly recommended.
  
• 
  When using rotary instruments ensure sufficient cooling (except when the manufacturer recommends use without
  cooling).
  
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  Coarse grit diamonds may lead to increased thermal stress. When using these instruments ensure sufficient cooling and
  work with minimal contact pressure. After using these instruments, subsequent finishing is required.
  

• 
  You will achieve the best results when observing the instrument-specific recommended speed (see product description).
  
• 
  Long and pointed instruments may break when the recommended speed is exceeded due the possible vibration in the
  tip area.
  
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  In case of instruments where the diameter of the working part exceeds the diameter of the shank strong centrifugal
  forces may occur if the selected speed is too high. This may result in bending of the shank and/or breakage of the instru­
  ment. The recommended maximum speed must not be exceeded.
  
• 
  The general rule is: the larger the working part, the lower the selected speed should be. Not observing the speed recom­
  mendations leads to an increased safety risk and/or inferior results.
  

• 
  Excessive contact pressure must be strictly avoided.
  
• 
  Excessive contact pressure can cause thermal damage to the tooth or the pulp. Moreover, excessive contact pressure may
  lead to undesirably rough surfaces due to broken blades.
  

• 
  To avoid undesirable heat generation sufficient cooling with air/water mix of min. 50ml/min needs to be provided during
  preparation.
  
• 
  When using FG-instruments sufficient water cooling needs to be provided continuously.
  
• 
  Insufficient cooling may cause permanent damage to the tooth, surrounding tissue and/or pulp.
  

• 
  Diamond instruments approx. 30x
  
• 
  Felt polishers single use
  
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  Carbide instruments approx. 20x
  
• 
  Instruments made of tool-steel approx. 5x
  
• 
  Polishers and brushes made of nylon approx. 10x
  
• 
  Ceramic abrasives approx. 15x
  

53

Instructions for use

• 
  www.a-k-i.org working group on the preparation of instruments.
  
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  A list of appropriate disinfecting agents can be obtained from the German Association for Hygiene and Microbiology
  (Desinfektionsmittelliste der Deutschen Gesellschaft fьr Hygiene und Mikrobiologie DGHM) www.dghm.org, from the
  Robert Koch Institute www.rki.de or from comparable international or national bodies and publications.
  
• 
  Hygienic guideline of the working group for hygiene in dental practices (DAHZ).
  

• 
  Prior to the first use and immediately after each use, all rotary instruments have to be disinfected, cleaned and if pos­
  sible sterilized.
  
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  Instruments should be stored in the original packaging at room temperature protected from dust and humidity.
  
• 
  All instruments are packed in non-sterile condition and need to be sterilized prior to use on the patient. Sterilization
  has to be carried out according to appropriate, validated procedures. If the instruments are not properly cleaned and
  sterilized, the patient may get infected with dangerous germs.
  
• 
  All appropriate materials can be sterilized in the autoclave with moist, hot air according to EN DIN 554 (e.g. at 134°C
  for a minimum duration of 3 minutes).
  
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  Protective gloves have to be worn whenever handling contaminated instruments.
  
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  Prior to sterilization all instruments have to be cleaned and disinfected properly. In case of manual cleaning use a suitable
  brush to remove blood and organic tissue.
  
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  Used instruments have to disinfected immediately after use on the patient prior to cleaning by immersing them com­
  pletely (without formation of bubbles) into a suitable bur bath using a bur disinfector.
  
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  After pre-disinfecting, the instruments are to be cleaned.
  
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  In case of severely contaminated instruments, cleaning should be carried out with ultrasound.
  
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  After cleaning and visual inspection the instruments are to be disinfected again. The instruments need to be cleaned
  again prior to disinfection if stains or contaminations are noted during visible inspection.
  
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  The instruments have to be thoroughly rinsed with water after each disinfection and dried immediately by air stream.
  
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  Discard all instruments showing signs of deformation, damage, excessive wear or contamination.
  
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  Instruments should be stored in containers, boxes or bur blocks in hygienic conditions. Protect the instruments from expo­
  sure to sunlight and heat. During storage, the instruments need to be protected from dust, humidity and recontamina-
  tion.
  
• 
  Any contact with hydrogen peroxide (H₂O₂) needs to be avoided. Hydrogen peroxide will damage the working part of
  instruments resulting in reduced working lifetime.
  
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  Felts cannot be disinfected or sterilized and may therefore be used as disposable instruments only (single use).
  
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  Polishers and brushes may only be cleaned and disinfected by using the specific, appropriate disinfectant and cleaner.
  
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  Polishers and brushes can be sterilized in the autoclave only.
  
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  During disinfection and sterilization care should be taken that the selected procedure is suitable for the given instru­
  ment.
  
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  Strictly follow the instructions of the manufacturer regarding use of disinfectants and cleaning materials, e.g. concer­
  ning concentration and duration of exposure.
  
• 
  The possible lifetime of the instruments may exceed the frequency benchmarks provided above if the instrument pre­
  paration cycle is carried out properly and only suitable agents are being used.