Former employees of a dentist claim the man made female patients unwittingly swallow his semen during visits to his office in Cornelius.

Dr. John Hall is accused by the state dental board of violating dentistry's standard of care, engaging in immoral conduct, and committing sexual assault or battery.

Six former patients -- including a 14-year-old -- say he tricked them into swallowing his semen. A seventh claims he jumped on top of her in the dental chair and "began to gyrate against her lower body in a sexual manner.