NOBODY TOLD ME!
The dental hygienist had almost completed her work on my mouth, all that remained for her to do was polish my teeth and add, at an extra cost, a fluoride coating. But before she proceeded, she gave me a brush and asked me to demonstrate how I brushed my teeth. I took the brush and moved it from left to right and then up and down. She grabs my hand, gently, and stops me before I am finished...