Meth mouth probably not. I'm pretty sure she's mostly doing coke, maybe speedballing occasionally, and drinking a lot. It actually has nothing to do with the meth itself, but people stay up so much, rarely brush their teeth, smoke a lot more cigs (much more potent on meth), and do figidity things with their mouth like bite their nails. Only the really hardcore meth users will get that. Most meth users are weekenders; use it to stay up Thurs-Saturday night and sleep until monday.
But Amy Winehouse is english, so her teeth will look like she chewed on hammers anyway. There's actually a porn series called Hammer-chewers, where it's nothing but Brits with bad teeth. It's great stuff.
I live close to one of the biggest "meth capitals" in the U.S. no shit and tweakers are like walking zombies. When I was in jail this dude was eating CORN... corn!!!! Liek the kind not on the cob even and his tooth broke! Meth rots you man. No matter what.
I shit you not this guy was up for three days straight talking to himself. During christmas time right? Fucking guy was throwing these ridiculous karate kicks saying things like "hey your a victim you dont have a badge... yeah you're just a victim... (then he saw santa clause on tv paused, and continued) santa claus is a vitim"
At night he was talking about his rent to some lady in his head. "Hey lady you don't pay rent I paid 50 dollars. You're a victim" Fuckin guy lost it i didn't know people got like that. After almost everything he said he'd kinda laugh a little. He was trying to jump rope with a 2 foot long towel for like 40 minutes.
I swear it was actually entertaining seeing someone out of their mind to the fullest. He said the most obsurd shit and you really see what these guys have going on in their head when they speak like this. He ended up getting socked for talking whe npeople were sleeping and moved.
Seriously the guy was off his rocker. All geetered out. It was literally crazy.
Not to mention he had sores all over his face he was constantly scratching his face and body. Just gross.