Dianne Glasscoe Watterson has developed a method for sharpening dental hygiene equipment that is simpler, faster, and more successful than any prior manual method. With a high-speed handpiece, SHOFU Dura-Green or Dura-White Stones, and magnification, Dianne Glasscoe Watterson carefully inspects the instrument, eliminating the shining, dull edge part of the blade until the cutting edge does not reflect light.