As it turns out, having to go shopping for dentures at 35 isn't exclusive to hockey players and heavyweight boxers. Studies have shown that professional athletes in a wide variety of sports have far more incidents of gum disease, erosion, and gingivitis than non-athletes. But while it makes sense that participating in a contact sport would loosen your teeth quicker than an all-M&M diet, taking blows to the face isn't the big issue. Instead, like waking up on the floor of a frat house, it's all about gasping for air, vomiting, and chugging Gatorade.
Between the high-carb foods and drinks athletes devour, plenty of pre-game nervous vomiting, and their constant gasping while exercising (which results in a dry mouth), athletes are left with tooth and gum issues far worse than most people, despite reporting that they brush frequently. Combine that with plenty of sports not paying well enough for good dental healthcare, and the average mouth is as icky as rooting for the Redskins.