There's an odd crunch in your meal, something sharp and foreign in your mouthful of food, and then, of course, the gaping hole in your molar that your tongue quickly finds and can't seem to forget.
Year of meticulous brushing failed to prevent it. I don't have cavities, but apparently I have been bequeathed a set of hard and brittle chompers by my ancestors. Every so often, a piece breaks off of one—as happened recently. The inability to chew even the softest of foods drove me to the dentist, out of concern that I might be eating mush from a blender for weeks if I didn't.