The wife of a 55-year-old man who died during a dental filling procedure settled her wrongful-death lawsuit against a north suburban dentist for $1.9 million.An agreement was approved last month in Waukegan by Lake County Circuit Judge Jorge L. Ortiz.In October 2016, Richard Greuel had an appointment with Vernon Hills sedation dentist William R. Kisker for a filling procedure.Greuel had obstructive sleep apnea, a condition where a person’s airways become blocked when asleep or sedated, resulting in less oxygen …