The analysis did show that a rubber cover from a third party was used on the head of the handpiece which made the handling more difficult.It was also found that the ball bearings have been gritty.It was not possible to duplicate the problem.The issue shows that the maintenance is not performed as requested by the ifu.The burr should be removed directly after the use of the handpiece, before the handpiece gets cleaned, disinfected, lubricated and sterilized.Also the rubber cap should be removed before the whole procedure to ensure that the parts are clean and maintained as requested.
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