We, w&h as the manufacturer, received the concerned instrument in august 2014 for repair.At that time, we got no info that an injury or other adverse event has happened.After a detailed analysis by our service techs, we found out, that the instrument was very polluted.We have also informed the dentist about this fact.Therefore, it was not a product problem because the practicing dentist has maintained the instrument very poorly and not in compliance with w&h's instructions for use.The specs for hygiene and maintenance are clearly stated in w&h's ifu (surgical handpiece s-11 led g) on pages 20-32.
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