== History ==The first electric toothbrush, the Broxodent, was conceived in Switzerland in 1954 by Dr. Philippe-Guy Woog.
Leta 1993 je Ameriški inštitut za ultrazvok v medicini (American Institute of Ultrasound in Medicine, AIUM), v povezavi z National Electrical Manufacturers Association (NEMA) razvil standard Output Display Standard (ODS), ki vključuje indeks toplote in mehanski indeks, katera sta bila dodana v nove predpise FDA za ultrazvočne naprave.