Midwest Burs:

Q: How do I clean my Midwest burs

A: Follow instructions below:

CLEANING
Insert burs into bur block or holder this Prevents damage to the blades while ultrasonically cleaning by preventing the blades from rubbing or vibrating against each other. Ultrasonically clean burs in a General Purpose Cleaner following manufacturers recommended procedure. Dry.

STERILIZATION
Dry Heat Procedure: Cycle in dry heat sterilize according to the sterilizer manufacturer recommended procedure. DO NOT EXCEED 375°F (190°C). Drying NOT required since there is no moisture or chemical present to cause corrosion.

OR

Autoclave/Chemiclave Procedure:
Dip in a corrosion inhibitor 1% sodium nitrite**, prior to sterilization cycle. Cycle according to the Manufacturers recommended procedure. DO NOT EXCEED 375° F (190°C). Then, dry. **Sodium nitrite available from Cottrell, 303 799-9401 or your local dealer the part number to order is PWR 1250.

 

Q: I'm having trouble getting burs in or out of my handpiece. What should I do?

A: You probably need to replace the chuck in your handpiece. If you have a Lever or Push Button style handpiece, you will need to replace the cartridge (turbine and chuck) as the chucks are not removable. If you have a wrenched style handpiece, you can order a replacement chuck from your dealer.

 

Q: I can't fit certain burs/angles in my straight attachment. What should I do?

A: If you're having difficulty fitting a bur/angle into your lever style straight attachment, the shank size of the bur/angle may exceed the allowable range of the handpiece. The lever style straight attachment accepts only ISO standard shank lengths (nothing larger that .0925" or 2.35mm diameter). Many lab burs and acrylic burs have shank sizes which exceed this limit.

 

Q: I can't get burs to lock into the Push Button Contra-Angle Heads. Help me.

A: The entire Contra-Angle Sheath and Head need to be connected to your Low Speed Motor in order to seat the burs. If you don't have the sheath "snapped-on" to the motor, then the bur will not be easy to engage in the head.