Dr. Sydney Bader obtained his BDS from the University of Witwatersrand, South Africa in 1981 and completed his Endodontic speciality in 1993 at Temple University, Philadelphia USA. 

He has practiced general dentistry for 10 years in North Ryde and has been practicing as an Endodontist in Chatswood since 1993 and has specialist endodontic practices in Chatswood, Dee Why, Gosford and Ballina.

Dr. Bader is a member of the Australian and New Zealand Academy of Endodontists (ANZAE), the Australian Society of Endodontology (ASE) and the Australian Dental Association (ADA) and has travelled periodically to South East Asia to teach and provide endodontic treatment to the underprivileged.