Kacey Jordan made the claim during a recent interview with gonzo radio host Howard Stern, according to radaronline.
"All his teeth have fallen out from partying," Jordan said, according to the Daily Mail. "He kept saying fucking porcelain teeth... they crap. Said he had to get gold teeth. Most of his teeth fallen out, he wouldn't say why but we all know it's because of the drug use."
While we don't really know the condition of Sheen's pearly whites, dentists say there's no doubt that certain drugs can cause tooth loss, some legitimate drugs, but illicit ones too. Methamphetamine (crystal meth), for instance, is such a notorious cause of tooth loss that doctors call the condition "meth mouth."
But drug abuse is far from the only cause of tooth loss.