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  There are three things to know about LED bulbs. (They’re on the box they come in.) First is lumen output, which is how much light is coming out of the bulb. It’s the brightness equivalent of what we think of as an incandescent bulb’s wattage: 800 lumens is essentially a 60-watt incandescent, which what …

  Unless you’re exceedingly meticulous in your mouth care, chances are you’ve never even looked at an oral irrigator. The little hose used to clean between your teeth and around an under your gums probably seems like just another tool for the 60-plus crowd that you walk by in the drugstore — lost among the …