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. 


Dr Grant Duncan

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

Dr Grant Duncan

Dr Duncan has been in specialty practice for over 25 years. He 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 brought Invisalign to Australia in year 2000, was one of the first Invisalign providers in Australia to be honoured with Black Diamond Provider status in January 2017. 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 is a clinical tutor on Invisalign within the graduate orthodontic program in the University of Adelaide. Dr Duncan is a member of the Royal Australian College of Dental Surgeons, and an invited member of both the prestigious Pierre Fauchard Academy of Dentistry, and the International College of Dentists. Dr Duncan has a wide range of clinical experience and interests, and is recognised as a global leader in Invisalign treatment. Dr Duncan holds a strong belief that Invisalign is a better and healthier alternative to braces, and that almost all adults and children can be treated with Invisalign. Early Invisalign treatment of children to allow for bite correction and arch development usually negates the need for braces and extractions at a later age.

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 Seerone Anandarajah

Dr Seerone Anandarajah

Dr Seerone Anandarajah moved to Adelaide from Brisbane in 2004 to pursue a career in dentistry and has since used his qualifications and experience to compliment his passion to improve the smiles of his patients. Seerone was awarded with a Doctor of Clinical Dentistry in 2015, with his post-graduate research presented both nationally and internationally, as well as published in various international orthodontic journals. He is a Registered Orthodontic Specialist with the Dental Board of Australia and has achieved Australasian Orthodontic Board (AOB) Certification.

Seerone mentors undergraduate students in the area of Orthodontics at the University of Adelaide. He also enjoys keeping up to date with the latest techniques and innovations in orthodontics, and prides himself in not only being able to provide high quality treatment to his patients, but also making the journey to a wonderful smile as enjoyable as possible.

Dr Seerone holds the following qualifications:

  • Doctor of Clinical Dentistry
  • Bachelor of Science in Dentistry (Honours)
  • Bachelor of Dental Surgery

Dr Seerone holds professional memberships in several organisations, including:

  • The Australian Dental Association
  • The Australian Society of Orthodontists
  • Australian Orthodontic board
  • The American Association of Orthodontists
  • The Australian Orthodontic Begg Society
  • The Royal Australian College of Dental Surgeons  

When not creating beautiful smiles at the Straight Smile Centre, Seerone enjoys spending time with his wife, family and friends. He is an avid sports fan and enjoys watching the Adelaide crows. His cooking skills are questionable, but he still tries anyway.

Dr Sarah Dan

BDS (Adel),D Clin Dent (Orth) (Syd), MRACDS (Orth) (Syd)

Dr Sarah Dan

The world of orthodontic treatment is not what it was and I love that. Patients not only want more from the experience, they expect great results too. I endevour to provide both through my dedication to individualised diagnosis and treatment planning and by treating every patient as I would like to be treated. 

I completed my Bachelor of Dentistry at the University of Adelaide in 2002 with Dean’s Honours. Following several years in private practice, I completed my Doctor of Clinical Dentistry in Orthodontics at the University of Sydney in 2009.  Receiving prizes for my clinical results and research I also simultaneously qualified as a Member of the Royal Australasian College of Dental Surgeons in the specialist field of Orthodontics.

I value continuing education and have a strong ongoing connection to the University of Sydney. I am also a member of a number of Australian and international professional associations, including the Australian Society of Orthodontists, the American Association of Orthodontics and the World Federation of Orthodontics. This keeps me informed on the latest advances in orthodontics so I can provide the best for my patients.

Between my own study and my direct experience of having braces later in life, I came to appreciate the real value of quality orthodontic treatment. I went through my teens and part of my twenties not liking my smile because I didn’t think braces were cool. But something changed in me when I realised I could feel better. Since having my teeth straightened, I can honestly say my life has improved and I feel more confident. This made me appreciate that orthodontics can transform lives. Knowing that I can help people be the best they can be and feel great about themselves makes me love my job and it is the reason why I became an orthodontist.

It is so satisfying and rewarding to see the confidence and amazing smiles of my patients every day. 

I feel very passionate about this and thus I am publishing a book in 2018 titled “So Smile – a guide to straightening up the confusion around orthodontic treatment”.  With this, I am hoping to educate patients so they can get the best out of their orthodontic treatment. 

Furthermore, since 2009 I have also been a contributor to Give a Smile, a charitable public health initiative of the Australian Society of Orthodontists, where I have provided pro bono care to numerous patients. It is a wonderful feeling being able to give back, educate and empower.

Yes, I’m an orthodontist, but more than that, I see myself as being able to work with my patients to feel better about themselves and life. It doesn’t matter if my patients are kids, teens, or grown-ups. I take time to listen and really show I understand so they feel comfortable and supported throughout their orthodontic treatment. 

Having had orthodontic treatment myself, treating my husband with invisalign and now having two young children who will need orthodontic treatment in the near future, I can easily emphasise with my patients and their orthodontic journey. 

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