Los Angeles - A dental technician who says Charlie Sheen punched her in the chest during an office visit is suing the actor for assault and battery.
Margarita Palestino filed the lawsuit in Los Angeles and is seeking unspecified damages from the Anger Management star.
Her lawsuit accuses Sheen of attacking her during a dental appointment on 25 September, including punching her in the chest and grabbing her bra.
Los Angeles police said they were actively investigating the incident, but could not release further details.
Sheen's publicist Jeff Ballard referred calls to the actor's attorney, Marty Singer, who was not available for comment.
Ballard said earlier that Sheen had had an adverse reaction to the combination of nitrous oxide and pain medication he was taking for a shoulder injury and that Sheen had knocked over dental instruments.
Ballard said other elements of the woman's story were untrue.