Actor Charlie Sheen could require a cosmetic dentistry operation after a source claimed his teeth have fallen out.

The Two and a Half Men star is reportedly in rehab after hosting a party at his Los Angeles home with a number of adult film actresses including Kacey Jordan.

She revealed that the actor was complaining throughout the bash about his "porcelain" teeth and claimed he was thinking about having them replaced with gold ones.

"All his teeth have fallen out from partying … [He] said he had to get gold teeth. Most of his teeth fallen out, he wouldn't say why," Ms Jordan was quoted as saying.

Sheen, who later said that he is "fine" despite his party lifestyle, could also opt for dental implants if he wants to remedy his tooth issues.

This type of cosmetic dentistry operation sees an artificial replacement securely fitted in a patient's mouth with the aid of a pre-drilled socket in their jaw bone.