I haven't made use of it yet as I discovered it only this week, but there are free dental screenings in Ottawa for people who have a low income. I'm not sure what happens at these things, but I imagine they're rather like the once or twice yearly visits we had in grade school from the health unit where they checked our teeth. Anyway, I thought I'd mention that in case anyone is in need. There is a schedule with the locations listed and I'm guessing it's hard to get there early enough to get seen, but I'll check it out soon. I've been using dental products that are supposed to repair and whiten. I'm unsure they are working, but I figured they were worth a try. Also, I hear if you add activated charcoal to your toothbrush before the toothpaste, it helps whiten too. It makes a hell of a mess, but I tried it. I think it might take a while to whiten, but my teeth are definitely cleaner, so I think it really does help with plaque. Activated charcoal is als...