Dr David Barnard has been a registered specialist Endodontist since 1996, has lectured to students at Sydney University since 1997 and more recently at Charles Sturt.  He has been a president of the Australian Society of Endodontology NSW branch and is currently a Visiting Dental Officer at the Westmead Centre for Oral Health.  He has been in full time Specialist Endodontic practice in Castle Hill since 1996 and is a Fellow of the International College of Dentists and a Founding Fellow of the International Academy of Endodontics.  He has used a microscope in clinical practice since 1999.