Well, anyway, generally - touch wood - I've had a pretty good track record with my teeth. Never had to have any teeth out, generally don't get aches and pains and brush them for about 2-3 minutes twice a day. I've had perhaps two or three fillings in my lifetime.
Anyhow - I noticed the other day when brushing my teeth, that when brushing on the side of one of my molars in the upper part of the mouth, that it kind of "irritates/stings" when I brush on the side. I then proceeded to take a look, and noticed that on that tooth there was a slight patch of "dark gray". I checked my upper molars with two fingers, pressing them slightly to see if they were ok - And one of them feels "ever so slightly" loose when pressing from the inner side. I could of imagined that, however.
It only hurts when brushing from that one side, and a little bit if I lick it with my tongue - I can also feel, with my tongue, that area seems a little "dry", almost like a crusty feeling. It's not a pain as such, more of a localized irritation around the tooth/gum. Similar to the way a bruise feels on your skin.
I proceeded to check the rest of my teeth, and they seem relatively ok - Minus the plaque buildup on two of my front-teeth, one of which looks almost transparent around the gum area when shining a light behind it (plaque buildup/tooth decay?
). It was then that I noticed that all of my big molars in the upper part of my mouth were discolored, a light grey of a sort. They are yellow at the topper half, and light grey at the bottom half - Imagine a layer, per say.
Any ideas on what the discoloration is, and what that irritation is? Also, the transparency at the front tooth - What can I do to prevent that buildup from chipping into the tooth? Thanks!
Discoloration and Possible loose tooth? 
