What can cause dental turbine failure?

What can cause dental turbine failure

As a consequence of the speed, a significant frictional heat is produced by the entire driving force in the rotor of the head , which is why it is integrated with an irrigation system by air and water to cool it.

It is indicated for jobs that require greater resistance to treatment, removing hard tissues of the tooth such as enamel or prosthetic  material . Multiplier contra-angles can also be used, but the turbine will be more efficient.

The turbines, like any other device, do not last forever. What can we do to make them last as long as possible? We will have to take care of the pieces that suffer the most and maintain it in the best way.

handpiece repair

Bearings  (specifically the bearing cage): generally fail among the former, mainly due to:

Fragments .

Excessive air pressure .

  • Very high temperatures during the sterilization process.
  • Wear caused by lateral load.
  • Water from compressor air storage tank .
  • Use of bent lathes or an incorrectly fitted lathe.
  • Use of poor quality ball bearings of unknown origin.
  • Solid waste inside the head due to inadequate or insufficient maintenance.

Bearings usually do not usually cover manufacturers’ warranties, since it is a turbine element that suffers wear from the moment it is first used. So the more you lubricate and the less force is applied in its use, the longer it will last. Therefore it is recommended to buy turbines with ceramic bearings, since they are more resistant and heat less.

Quenching handpiece repair with cold water after sterilization: A r uick cooling can cause deformation of parts of the turbine and contaminate sterilized and tools.

Put up the turbine without the lathe:  This may damage the mechanisms of the spindle or the mandrel.

Irregular lubrication:  The mandrel must be lubricated at least once a week to keep it clean and to promote proper operation. The fragments can obstruct the mandrel and affect the fixing of the lathe.

Lubrication is an important task to perform as a custom in the clinic, as this will ensure that the instrument lasts everything we want. Manufacturers recommend lubrication of the turbine (especially the output of the same) between patient and patient , as over time waste and debris solidify and spoil the operation of the turbine, which would shorten its life Useful.

It is very important to use the appropriate lathes . One of the most common mistakes in regard to dental turbines is the use of inadequate lathes that have a diameter smaller than or greater than the standard diameter (1.59 mm). Unfortunately in the market there are many finer or softer lathes, which come from low cost manufacturers and are attractive thanks to its low price. But if the lathes are too thin or soft, they do not hold well in the mandrel. Turning around 300,000 revolutions per minute or more, sooner or later these lathes will start to deviate and eventually cause damage to the mandrel.

In addition, standard milling cutters are also sold that do not adapt correctly to the turbine although it seems that it does, and this can cause damage to the clamp that holds it because the diameter does not conform to the standard.