Source: StarTribune.com In seven years as a Registered Dental Hygienist, Laura Schmitz Cook has already seen a lot of change -- for example, she said, "Fluoride varnish has progressed. It was yellowish, now it's clear. You can give it to young kids without fear. It's a great treatment for kids with high decay risk." Digital X-rays are easier to manipulate than film, providing better information about what's going on, and because they're instantly viewable, "they're a great educational tool." Of course, some things haven't changed; Schmitz Cook spends most of her time cleaning teeth. "I take pride in being very gentle, but when people tell me they don't like the dentist, I say, 'I don't take it personally.' I understand the anxiety about going to the dentist." Through her first year in college, Schmitz Cook was torn between being a teacher and being a hygienist. After spending 20 hours shadowing a hygienist, the decision was easy. "I could see myself doing this," she said. In addition to graduating with a four-year degree from an accredited program, Schmitz Cook had to take clinical and written board examinations. Schmitz Cook moved to Minnesota as soon as she graduated from the University of South Dakota and "found a job right away through networking," although she senses that jobs are tighter in the current economy. To be registered in Minnesota, she had to pass a state test on relevant laws and the code of ethics. She also earns 25 continuing education credits every two [...]