An earlier version of this article incorrectly reported that the jury dismissed counterclaims brought by the defendant dentist for defamation and wrongful termination. Those allegations were voluntarily dismissed prior to trial.A Cook County jury has awarded more than $500,000 to an Oak Park dentist who bought another dentist’s practice, then later learned that dentist defrauded patients and their insurance companies and inflated his revenue.Plaintiffs Dr. Anne M. Fabricius and Oak Park Prosthodontics Ltd. sued Dr …