Dr o'Shea completed a Bachelor of Dental Science at UQ in 2001. Following graduation she worked as a General Dentist in Brisbane before accepting a Senior House Officer position at the Department of Paediatric Dentistry and Orthodontics at the University of Dundee in Scotland. During this time she developed a keen interest in orthodontics.
In 2007 Dr o'Shea completed her Doctor of Clinical Dentistry in Orthodontics at the University of Otago in 2007. She undertook a further Fellowship year at The Hospital for Sick Children in Toronto, Canada, focusing on the treatment of children and young adults with Cleft Lip and Palate and other complex Cranio-facial anomalies. Prior to returning to Brisbane, she was also privileged to be the consultant Dentist for the US Antarctic Research stations, based at both Ross Island and at the South Pole in Antarctica.
Since 2010 Dr o'Shea has returned permanently to Brisbane where she has worked in private practice and as a member of the Cleft Lip and Palate Team newly relocated at the Lady Cilento Children’s Hospital.
She enjoys learning German while raising her two young sons bilingually with her native German speaker husband. She also enjoys adventure travel and golf.