At Dentistry on Unley, our award winning staff offer an advanced standard of dental care, using the most current philosophies and proven techniques.

Our practitioners personalise dental care to your individual requirements, not only caring for your teeth and gums, but also caring about your general health and wellbeing! 


or call 08 8272 9087 Today!

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Dr Roger Antoniazzi, Principal Dentist

"Dr Roger loves unravelling dental problems, the more complicated the better!"

Dr Roger has been practicing dentistry for over 36 years. He is a past president of both the state branch of the Australian Dental Association and the Dental Board of South Australia.

He has continued his postgraduate studies over the years to maintain and advance his dental skills and is a member of a number of professional societies in dentistry.

While providing general dental treatments, he has a special interest in the placement of dental implants and Cerec ceramic restorations, and has had extensive overseas training.

Dr Roger loves unravelling dental problems, the more complicated the better! Whether it be improving the appearance of a smile, long term dental failures, tricky pain diagnosis or dissatisfied clients from other practices; it gives him great professional satisfaction to use his experience to make them happier and healthier than when they walked in! The trick is in trying to understand the person's situation as an individual and not just "filling teeth". He enjoys the challenge of treating adults who are scared of dental treatment and have finally got the courage to do something about it!

On a personal note, he thinks he is a bit of a home handyman (dangerous!), a Sunday cappuccino cyclist, and a family man with two adult children.

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Dr Diana Tsiopelas, Principal Dentist

"She is committed to working with her patients to provide them with lifelong solutions to their dental health needs"

Dr Diana is a gentle and caring dentist who is passionate about her profession.  She grew up locally and graduated from the University of Adelaide.

She has worked in private practice in both Adelaide and Melbourne.  She has also had involvement in teaching dental students at the Universities of Adelaide and Melbourne.

She has a keen interest in implant dentistry and is a member of the Australian Society of Implant Dentistry.  She also enjoys cosmetic dentistry and improving the appearance of peoples smiles.  Dr Diana regularly attends further education courses to keep up to date with advances in dentistry.

Her aim is to educate and motivate her patients to develop an awareness of their optimal dental health.  She is committed to working with her patients to provide them with life long solutions to their dental health needs.

Dr Diana strives to offer her patients the highest standard of dental care in a relaxed and caring manner.  She will explain all of the treatment options available and help guide her patients to decide on a plan that best suits them.

Dr Diana loves working a with an outstanding, friendly team in a state of the art dental surgery with the latest technology and equipment.

Spending quality time with her family is also very important to her.  She has three children and a dog.  Dr Diana enjoys socializing with her friends and family, gardening and other outdoor activities.

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Dr Kong Yen, Dentist

Dr Kong grew up in Adelaide and graduated from Adelaide University with his Bachelor of Dental Surgery in 1992. He has regularly attended many further education courses over the years to keep up to date with the latest advances in dentistry. Dr Kong was a clinical tutor at the  Adelaide Dental Hospital teaching 4th and final year students.

He has worked extensively in private practice in Adelaide, Melbourne, Sydney, London and Glasgow as well as the Adelaide Dental Hospital and country practices. He is extremely dedicated to his profession and loves to assist his patients in achieving optimal oral health. 

Dr Kong has a gentle manner and is a great communicator. He is well rounded in all facets of general dentistry, ceramic crowns, implants (restorative side) and short term aligner orthodontics.

Outside of work Kong has a busy family life with his wife and 2 young boys. He is an avid traveller, and is a fan of cricket, skiing and the live music and arts scene.


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Dr Melisa Wu, Dentist

A family general dentist for over 25 years, Dr Melisa says the most rewarding part of her work is building long-term trusting relationships with the children, parents and grandparents of her patients. Renowned for her gentle touch and approachable manner, Dr Melisa strives to create the perfect restoration for every patient. She is also qualified to treat sleep apnea and snoring and liaise with patients, sleep physicians and GP's.

Dr Melisa is an Adelaide graduate who developed her general dental skills in country Victoria and Brisbane before returning to practice Adelaide in 2000. She is as an active member of the ADA and regularly attends professional development forums.

Dr Melisa's consulting days at Dentistry on Unley are Monday, Wednesday, Friday and some Saturdays, and she welcomes all new patients.

Outside of dentistry, Dr Melisa is a busy Mum to two active teenage girls, a keen green thumb and enjoys exploring the walking trails of  Adelaide Hills with her husband.

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Dr Laura Smith, Dentist

Dr Laura enjoys all facets of general dentistry and aims to provide high quality, holistic care to patients in an environment where they feel comfortable and respected. She aims to establish rapport and develop positive experiences for all patients that she works with. Dr Laura takes the time with patients to discuss all of their options and work towards the best possible outcome for them.

Dr Laura has worked in Tasmania and rural clinics in South Australia and also teaches dental students at Adelaide University. She graduated from the same university and was awarded DUX of the year for her final three years.
Dr Laura is a member of the Australian Dental Association and an elected member of the South Australian Graduate Committee. She regularly attends professional development courses to ensure she is up to date with the latest dental advances.
When not at work, Dr Laura likes to run, ride her bike, go out with friends and watch the football.

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Dr Liesl Collins, Dentist

Dr Liesl is a gentle, professional dentist who prides herself on high quality dental care delivered in a way that makes her patients feel comfortable at all times. She loves getting to know and treat all members of the family. She understands attending the dentist can be daunting for many people and she strives to make every appointment a relaxing experience.

Dr Liesl is a gentle, professional dentist who prides herself on high quality dental care delivered in a way that makes her patients feel comfortable at all times. She loves getting to know and treat all members of the family. She understands attending the dentist can be daunting for many people and she strives to make every appointment a relaxing experience.

She enjoys all aspects of general dental care, especially comprehensive, preventive treatment planning, crown and bridge treatment and placing both plastic and ceramic aesthetic restorations. Dr Liesl strives to ensure her patients have a positive dental experience and always endeavours to help even the most anxious of patients look forward to their dental appointments! She thoroughly explains all treatment options and helps her patients decide on the best course of treatment for themselves and their family.

Dr Liesl grew up in South Australia and graduated from the University of Adelaide in 2011. She has been living and working in Hobart, Tasmania for the past 10 years and has now moved back to Adelaide to be close to family and friends.

Out of work, Dr Liesl enjoys spending time with her husband, daughter and golden retriever. She has a keen interest in gardening and sewing and is looking forward to exploring South Australia again after a decade away from the beautiful state.

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Stella Harrold, Oral Health Therapist

Stella is passionate about preventive dentistry and believes that through education and motivation to make small changes, optimum oral health can be achieved. Stella enjoys working with people of all ages and believes that good habits in dental care is a great investment for future overall health.

Stella grew up in Adelaide and is a Bachelor of Oral Health graduate from the University of Adelaide. On completion of the degree she was awarded the Executive Dean's Certificate of Merit and the Oral Health Research Prize.

Stella is a member of the Dental Hygiene Association of Australia and continues to expand her knowledge by attending courses and education seminars.

Stella enjoys spending time with her two young children, travelling and all things outdoors. She finds time to relax at her home away from home on Kangaroo Island.

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Amy Barnes, Oral Health Therapist

Amy has been an Oral Health Therapist with the Dentistry on Unley team since 2011. She now works part time and is a full time Mum to her two young children. Amy is a firm believer that prevention is far superior to cure and focuses on early intervention, prevention and education.

Amy loves her role as an Oral Health Therapist as she believes she can create a comfortable environment and educate her patients with advice and an understanding of the importance of good oral health at any age.

Amy grew up in Adelaide and started Dental Assisting in 2004. She graduated from the Bachelor of Oral Health degree in 2009. Amy won the award for excellence in Clinical Practice for all three years of the Bachelor of Oral Health degree and was recognised on the Dean of the Dental School’s honours list for academic excellence upon completion of the degree.

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Lauren Baxter, Oral Health Therapist

Lauren is compassionate and committed to providing gentle dental care to all ages. Dual qualified as a dental hygienist and dental therapist, Lauren loves working with children, aiming to provide a relaxed, educational and fun dental experience with an emphasis on oral disease prevention.

Having developed a passion for dentistry at a young age, Lauren begun dental nursing at 16 during high school and continued for five years throughout her tertiary studies. Lauren is a graduate of the Bachelor of Oral Health program at the University of Adelaide, receiving the Dental Hygiene Association and Golden Scaler awards for excelling in the course. In her final year she was selected to travel to Vietnam on a volunteer scholarship to provide dental care to underprivileged children.

Outside of work Lauren enjoys cooking, travel, music and time spent with friends and family.

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Sue Leathem, Hygienist

Sue is committed to making your hygiene experience first class, and this is reflected in her care and compassion for her patients. Sue has come to our practice highly recommended and has been with us now for 6 years, working full time.

Sue has over 30 years experience in the dental field. This has included many years of dental assisting, reception and practice management duties. During her years as a Dental Assistant she has at times volunteered her services to the Royal Flying Doctor Service, which provided dentistry to outback communities in S.A.

Sue has given educational group talks to preschool children in regards to dental care, and has volunteered her services many times at the Royal Adelaide Show in promoting oral health. With Sue’s extensive knowledge and commitment to dentistry she has fulfilled her ambition by continuing studies to graduate as a Dental Hygienist. On completion of her degree Sue was awarded the Hu-Friedy Golden Scaler award for demonstrating excellence in skills and patient care.

Sue is a member of the Dental Hygiene Association of Australia (S.A. Branch), and continues to attend professional development seminars to expand her knowledge and skills.

Born and raised in Adelaide, Sue is married with 2 children. Her spare time is often spent sewing, bike riding and walking with her husband and her 2 Blue Heeler dogs.

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Hannah Mazzamauro, Oral Health Therapist

Hannah has been a part of the Dentistry on Unley team since 2010 when she was employed fresh from high school as a Clinical Coordinator.

Hannah then completed her certificates in Dental Assisting and Dental Radiography while working with us. During her years as a Clinical Coordinator and working closely with the hygiene team, Hannah’s motivation grew to advance her studies in dentistry. She continued working with Dentistry on Unley part time while studying full time at the University of Adelaide.

Hannah completed her Bachelor of Oral Health in 2018, and we are proud to announce that she will be continuing her career at Dentistry On Unley in her new role as an Oral Health Therapist.

During her time at uni, Hannah was involved in numerous health promotion and education projects and was selected to go to Cambodia on a volunteer scholarship trip.

Hannah has developed a strong passion in prevention of disease and dental education for all ages. She hopes to continue volunteering as much as possible during her career.

Away from Dentistry On Unley Hannah loves spending time with her friends, trying different foods and walking. She is always a willing organiser of team events during DOU training days or our annual Christmas party.

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Adele, Practice Manager

Adele has been the Practice Manager at Dentistry on Unley for over 10 years. In this time Adele has attended various training courses and obtained a Diploma of Human Resources. Adele loves a challenge and enjoys the creative side of Practice Management. 

Adele is known for her attention to detail and exceptional organisational skills. Adele takes great pride in the service that her team at Dentistry on Unley delivers on a daily basis and loves building relationships with our patients.

Outside of work Adele enjoys a healthy lifestyle, going to the gym and spending quality time with her fiancé and 2 beautiful children.

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Nara Morris, Advanced Scope Oral Health Therapist

Nara has over 15 years experience working in Dentistry. She has completed extensive study including her Graduate Certificate in Dental Therapy (Advanced Clinical Practice) after completing her postgraduate studies at The University of Melbourne. 

Nara’s experience in patient care is reflected in her calm, amicable and gentle manner. Whilst having a preventative focus, Nara excels in all areas of her expertise,
including restorations for both children and adults.

Dental clinic Unley

Learn More About Our Unley Practice

Our team are proud to work in this comfortable and modern practice with its state-of-the-art facilities and welcoming design.

We look forward to seeing you at your next visit!