A screaming, tormenting humming - many connect the sound of the dentist's drill to aching teeth. Root canal treatment is not a pleasant experience in itself. Additional high-frequency sounds of the supposed torture tool squeaking at the patient's eardrum inevitably lead to a negative connotation of the dentist and the dental devices. Besides the pain the patient might feel on the dentist chair, a dental handpiece, is also a "painful" challenge for bearings.
展开▼
