Straight Smile Centre ™ > Meet the team > Specialist orthodontists

Specialist orthodontists

The team at the Straight Smile Centre™ all have one thing in common – we are all passionate about creating the best possible results to give our patients something to smile about. Each member was handpicked to ensure you receive professional advice and the highest level of care throughout your treatment. We also believe you should feel at ease during treatment and will do everything we can to provide a comfortable and patient-friendly environment. 

Specialist Orthodontists


Dr Grant Duncan

(BDS (Adel), MSc (Man, Canada) MRACDS (ortho), FICD) 

Dr Grant Duncan

Dr Grant Duncan is a local South Australian orthodontist. Born in Gawler, Dr Duncan received his Bachelor of Dental Surgery from the University of Adelaide. He subsequently went on to achieve his Master of Science in Orthodontics from the University of Manitoba in Winnipeg, Canada. 

Dr Duncan was one of the first Invisalign providers in Australia to be honoured with Black Diamond Provider Certified Invisalign status. This is in recognition of his commitment to, and clinical experience with, Invisalign treatment. He is part of the national Invisalign accreditation team, lectures nationally and internationally on the Invisalign system, and teaches Invisalign to graduate orthodontic students within the University of Adelaide School of Dentistry. 

Dr Duncan has an interest in education, being a certified trainer for Invisalign Australia, a clinical tutor in the University of Adelaide graduate programme in orthodontics, past co-director of the Adelaide Seattle Study Group, founding president of the Australasian Orthodontic Study Group and a member of the prestigious Pierre Fauchard Academy of Dentistry. 

Dr Duncan has now been in specialty practice for over 25 years. He is married to his wife, Margaret, with whom he has four children - Catherine, Nicholas, Laura and Natalie. 

Professional memberships

Dr Duncan holds professional memberships in several organisations, including:

  • The Australian Dental Association
  • The Australian Society of Orthodontists
  • The American Association of Orthodontists
  • The Seattle Study Club
  • The Australasian Orthodontic Study Group
  • The Royal Australian College of Dental Surgeons 

Dr Daniel De Angelis

(BDS, BSc, MOrth RCSEd, DClin Dent, MRACDS(Ortho), FICD)

Dr Daniel De Angelis

Dr Daniel De Angelis is a local South Australian Specialist Orthodontist born in England. He achieved a Bachelor of Dental Surgery and Bachelor of Science from The University of Adelaide. He then went on to obtain a Doctor of Clinical Dentistry in Orthodontics. He also holds a Diploma of Membership in Orthodontics of the Royal College of Surgeons of Edinburgh, and is a Member of the Royal Australasian College of Dental Surgeons in the Special Field of Orthodontics.

Dr De Angelis is involved in several professional societies including the Australian Society of Orthodontists, the Australian Society of Endodontology, the Australian and New Zealand Society of Paediatric Dentistry, the Australasian Orthodontic Study Group, and the Australian Dental Association, where he served as a councillor for three years. Dr De Angelis was involved in teaching as a clinical tutor at The University of Adelaide in the Undergraduate Orthodontic Programme for two years, and was a visiting Orthodontic Consultant for the Australian Craniofacial Unit at The Women's & Children's Hospital for three years.

Dr De Angelis is currently actively involved in lecturing to the general dental community, and several dental societies, with a particular focus on interceptive treatment for children and the multi-disciplinary treatment of adult periodontal patients. He is a member of the Adelaide Seattle Study Group board of advisors, where he actively presents to the group on several occasions, and acts as an orthodontic consultant.

Dr De Angelis has been in specialty practice for 12 years and thoroughly enjoys working with people of all ages including adults, adolescents and children. Daniel and his beautiful wife Penny are proud parents to their sons, Christian and Sebastian.

Dr Wayne Chen

(BDS, BSc(Hons), DClin Dent, MRACDS, MOrth RCS (Edin)
English & Mandarin

Dr Wayne Chen

Dr Wayne Chen is originally from Brisbane and graduated from the University of Adelaide dental school in 2003. He practiced for numerous years as a general dentist in both the private and public sector before returning to the University of Adelaide for further studies, completing his Honours research degree with first class honours in 2008. He then completed his specialisation in orthodontics as well as attaining memberships in orthodontics with the Royal Australasian College of Dental Surgeons and the Royal College of Surgeons in Edinburgh.

Dr Chen regularly attends meetings, courses and conferences (local and international) to ensure he is up-to-date with the latest technologies and breakthroughs. He is a member of the Australian Dental Association as well as the Australian Society of Orthodontists. He is also a certified member of the Australian Orthodontic Board.

Aside from straightening teeth, Wayne is also good at burning his cooking, although this does not seem to stop him! He also enjoys bushwalking, tennis and reading a good book. However, since the birth of his two children, you’ll mainly find him in the supermarket looking lost or acting as a chauffeur to his children’s busy lifestyles.

Dr Laura Duncan

BDS (Adel), MSc (Man, Canada)

Dr Laura Duncan

Dr Laura Duncan studied dentistry at the University of Adelaide and commenced her career in the Clare Valley, whilst tutoring in the Undergraduate Clinic at the University of Adelaide.

Dr Duncan then set off to Canada to study orthodontics at the University of Manitoba - the very same place her dad, Dr Grant Duncan, studied and met Laura's mum, Margaret. A perfect place to spend time with a lot of extended family still abroad!

During her studies, Dr Duncan was able to attend some of the largest orthodontic conferences in the world and placed second (out of all the U.S and Canadian Orthodontic Graduate students) at the American Board of Orthodontics case display in 2015.

Dr Duncan loved the Canadian lifestyle and activities, including ice fishing and cross-country skiing, and made incredible lifelong friends. We are sure Manitoba hasn't seen the last of her yet!

Dr Duncan graduated with a Master of Science in Orthodontics (MSc Ortho), joined the Fellowship of the Royal College of Dentistry (RCDC), became board certified with the American Board of Orthodontics (ABO) and made her way back to Adelaide.

Dr Duncan is delighted to be home working alongside her Dad and is very grateful for the opportunity to share the journey together.

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