Our Doctors | Specialist Adelaide Orthodontists | Straight Smile Centre

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

Dr Grant Duncan

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

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 and was one of the first Invisalign providers in Australia to be honoured with Blue Diamond Provider status in May 2019. 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 Sarah Dan

Dr Sarah Dan

BDS (Adel), DClin Dent (Orth) (Syd), MRACDS (Orth) (Syd)

Sarah completed her Bachelor of Dentistry at the University of Adelaide in 2002 with Dean’s Honours. Following several years in private practice, Sarah went on to complete her Doctor of Clinical Dentistry in Orthodontics at the University of Sydney in 2009.  She simultaneously qualified as a Member of the Royal Australasian College of Dental Surgeons in the specialist field of Orthodontics.  In her final year of postgraduate studies she received the Dentsply Prize for best faculty research and the Australian Society of Orthodontists NSW Award for best clinical patient case presentation. 

Combining her practice with involvement in the academic arena and membership in relevant professional associations, we sometimes wonder how she does it. 

Sarah’s academic affiliations include her role on the Dean’s Advisory Committee for the Faculty of Dentistry at the University of Sydney.  In this role, the breadth of Sarah’s private practice experience provides valuable input to the university’s course direction. 

In her role on the Academic Selection Committee, Sarah is involved in the appointment of academic staff to the department of Orthodontics at the University of Sydney.  Sarah also selects the budding orthodontists via the Orthodontic Academic Selection Panel and the Orthodontic Postgraduate Selection Committee. 

Apart from that, Sarah also uses her expert knowledge in reviewing scientific journal articles for the Australian Journal of Orthodontics and is a medico-legal expert in assessing orthodontic patient cases.

Sarah is also a member of several professional associations, including:

Community and giving back form an integral part of Sarah’s work.  

Sarah is a very happy contributor to Give a Smile, a charitable public health initiative of the Australian Society of Orthodontists.  To date, Sarah has provided charitable care to numerous patients since 2009. 

Sarah loves to educate and empower both patients and referrers.  She continues to add to her library of resources and welcomes feedback on how these can be developed further.  Most recently Sarah published a book “So Smile” to help parents navigate the orthodontics journey of their children.

Visit Dr Dan's website


SO SMILE! A guide to straightening up the confusion, concern and catastrophes around orthodontic treatment. 

Target market for the book is the parent (mainly mums) and carers who navigate the family “buy in” in terms of the orthodontic provider they choose. It is a book that does not need to be read from cover to cover, jump in and find what you want to know, what you need to know. Sarah wants the community to have the information they need, presented in a language that is easy to understand, empowering them to make the best decision possible for their child or themselves.

Listen to Dr Dan's radio interview with ABC

Dr Wayne Chen

Dr Wayne Chen

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

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

BDS, BSc Hons (Adel), DClinDent (Orth)

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 complement his passion to improve the smiles of his patients. Seerone was awarded with a Doctor of Clinical Dentistry in 2015, with his postgraduate 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 BDS (Adel), DClinDent (Ortho)
  • Bachelor of Science in Dentistry (Honours)
  • Bachelor of Dental Surgery BDS (Adel)

Dr Seerone’s professional memberships include:

  • The Australian Dental Association
  • The Australian Society of Orthodontists
  • Australian Orthodontic board
  • The American Association of Orthodontists

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.


Whether your consultation is virtual or in our clinic it is completely free and there’s no obligation to proceed with treatment.

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*Book to start a full treatment of adult or teen Invisalign between now and 15 August and the price will be the same as ceramic braces. Offer does not apply to Phase 1 treatments.