Dr Greg Mahoney


BDSc, GradDipClinDent, MSc(Dent), PhD, FADI, FPFA

Greg graduated with a Bachelor of Dental Science from the University of Queensland in 1978. He also has a Graduate Diploma in Clinical Dentistry (Pain Control and Sedation) from the University of Sydney; a Master of Science (Dentistry) from the University of Sydney in 2001; a PhD from the University of Queensland (2010 ) in Oral Public Health and finally, fellowships he has from the Academy of Dentistry International and the Pierre Fauchard Academy. He is a member of the Australian Dental Board’s Committee on conscious sedation; panelled member of the AHPRA and, member of the special purpose committee on sedation for the Australian Dental Association. He is presently the president of the Australian Society of Dental Anaesthesiology. He has owned and operated my own private practice since 1980.


Dr Angelo Preketes


BDS(Hons), Grad.Dip.Clin.Dent.(Oral Implants), Grad.Dip.Clin.Dent.(Conscious Sedation & Pain Control)

Dr Preketes graduated in 1991 with a Bachelor of Dental Surgery from the University of Sydney. Between 1998 and 2004 he obtained Graduate Diplomas in Clinical Dentistry at the University of Sydney in the areas of Oral Implants, and Conscious Sedation and Pain Control. He is also qualified as an Advanced Life Support Level 2 provider with the Australian Resuscitation Council (ARC).

Dr Preketes has long been a Clinical Associate in the University of Sydney teaching in both the general dental and sedation departments with Dr Turnbull. He is also an Adjunct Senior Lecturer at Charles Sturt University.

Angelo is Honorary Secretary for ASDA and teaches on the ASDA Relative Analgesia program.


Dr Michael Walker



Dr Walker is the University of Sydney lecturer for diploma students in Intravenous Sedation. He is the Senior Clinical Associate and external examiner in Intravenous Sedation. Michael is the Past President of ASDA and Examiner for the Conscious Sedation Diploma. He runs one of the largest sedation practices in the Sydney region, where nitrous oxide inhalation sedation forms an integral part of that practice.