Sinead O` Hanrahan qualified as a dental surgeon in 1993. She worked for 5 years in general dental practice before completing a year as a Senior House Office in Dublin. In 2003 Sinead was awarded the MFDS from the RCSEd and FDS from the RCSI.
She completed a three-year full time Masters Programme in Orthodontics at the Dental School, Trinity College Dublin in 2005.