PREPARATION AND FINISHING BURS

GENERAL RECOMMENDATIONS FOR USE AND SAFETY INSTRUCTIONS

All instruments have been developed and constructed for their specific use. Improper use can lead to damage to the tissue, premature wear, destruction of the instruments, danger to the user, patient or third parties.

Proper Use:

• Make sure that only technically and hygienically perfect and cleaned turbines, handpieces and contra-angles are used.
• Chuck the instruments as deeply as possible.
• The instrument must be rotating before contact is made with the workpiece.
• Avoid jamming and using the instrument as a lever -- increased risk of breakage.
• Depending on the operation, safety glasses are recommended.
  Improper use leads to increased risk and inferior results.

Recommended Speeds:

• Observe the instrument-specific speed recommendations to achieve perfect results.
• The maximum permissible speed is indicated on the package, as well as in the chart below.
  The general rule is:
  • the larger the working part the lower the speed
  • the larger the working part the higher the contact pressure
  Not observing the maximum permissible speed leads to an increased safety risk.
  

Operating Pressure:

• Excessive operating pressure must be avoided.
• This can lead to damage and breakouts on the working parts of bladed instruments. Moreover, increased heat generation occurs.
• Increased operating pressure may lead to stripping of the grit on abrasive instruments or to clogging of the instruments and increased heat generation. In the extreme case, instrument breakage may occur.

Cooling:

• In order to avoid undesirably high heat generation during preparation, sufficient water cooling (50ml/min at minimum) must be provided.
  Insufficient water cooling can cause irreversible damage to the tooth and the surrounding tissue.
  

Elimination of Worn Instruments:

• Damaged and deformed blades cause vibrations and lead to breakouts on preparation margins and rough surfaces.
• Blank spots on the surface of diamond instruments are an indication of abrasive grit wear and reduced cutting efficiency. These deficiencies lead to excessive temperature and damage to the pulp.
• Bent or "out of true" instruments must be eliminated immediately.

Dull and damaged instruments lure the dentist into using higher operating pressure which results in increased operating temperature. This may lead to thermal pulp damage.

As far as disinfection and sterilization is concerned, care should be taken that the selected methods are suited for the respective instrument.

HOW SUPPLIED:

WARRANTY: Bisco, Inc. recognizes its responsibility to replace products if proven to be defective. Bisco, Inc. does not accept liability for any damage or loss, either direct or consequential, stemming from the use of or inability to use the products as described. Before using, it is the responsibility of the user to determine the suitability of the product for its intended use. The user assumes all risk and liability in connection therewith.

CAUTION: U.S. Federal law restricts this device to sale by or on the order of a dental professional.

BISCO, INC.
1100 W. Irving Park Rd.
Schaumburg, IL 60193
U.S.A.
847-534-6000
1-800-BIS-DENT
www.bisco.com

CE ADMINISTRATOR
Bisico France -
Mr. Fred Picavet
L'Opera- BP. 60
13680 Lancon De Provence
France
Phone: 33-490-42-9292
Fax: 33-490-42-9261

IN-128
Rev. 4/03