Ke$ha has been banned from making art out of real teeth in rehab.
The 'Timber' hitmaker, who is currently receiving treatment for an eating disorder at the Timberline Knolls clinic near Chicago, allegedly asked her fans, via a friend, to keep sending her pearly whites to "make art" and help her to pass the time.
The 26-year-old star has been using real teeth to make her own bras, bandanas and jewelry for some time but the treatment facility told gossip website TMZ.com that it has a strict no-tooth policy.
A spokesperson said: "We can't accept human remains. There is always a risk it could be bio-hazardous material so we are not bale to bring in anything that's real."
The rehab centre was forced to issue a plea to the singer's fans not to send Ke$ha real teeth after a friend wrote on her Twitter page on Tuesday (01.21,14): "Hey guys this is K's friend again. She's doing well and needs more of your teeth to make art with at the treatment centre. She misses you."
However the facility said it will accept fake teeth if her fans wants to send her things.