Pembroke dentist Christy Natsis will ask Ontario’s highest court today to overturn her drunk driving conviction.

The Doctor's appeal of the May, 2015 conviction is scheduled for a two day hearing at the Ontario Court of Appeal.

Natsis was found guilty of impaired driving causing death and dangerous driving causing death for a head-on crash on Highway 17 in March, 2011 that killed Ottawa’s Bryan Casey. She was sentenced to five years in prison .

Casey, a 50-year-old father of three, was driving home from work in Chalk River when his car was hit.

Natsis was released on bail in November, 2015 while she appealed her conviction.