Meet the Best Dentists in Melbourne

At Bayside Smiles, we care about the dental and oral health of each of our patients, regardless of their age. To address their distinct needs, this Bayside family dentistry clinic has assembled some of the best dentists in Melbourne. Learn more each member of our elite dental team.

Dr Magdalena M Koy

BDS (Hons)

“My treatment philosophy is to provide a modern, holistic approach that is tailored to each individual’s requirements. I strongly believe that our dental health is closely related to our overall self-esteem and general well being. I therefore aim to utilize state of the art techniques to create long term results that feel great and look even better.”
Dr Magdalena M Koy

Magda grew up in Bayside Melbourne and attended Star of the Sea and MacRobertson Girls High School. Magda then studied dentistry at the University of Sydney, graduating in 2000 with honours and receiving the medal for excellence in removable prosthodontics (dentures). Whilst studying, Magda also won a scholarship with Rotary to travel to Vietnam where she worked with the Australian Rotary Dental Team.

Magda then gained extensive experience in private practices in Perth and Sydney before moving to England to further her dental experience and travel widely. Magda has completed further study whilst in the UK with the prestigious British Society of Occlusal Studies, gaining advanced skills in treating bite and jaw joint problems. Magda has a number of special interests in dentistry – she loves treating children and helping anxious patients overcome their fears. Magda also has a passion for cosmetic dentistry, having completed continuing education in the USA with the American Academy of Cosmetic Dentistry.

Magda is married to Mike and lives locally with their three children Oliver, Lucy and Hugo.

Dr Renata Duque


Renata graduated from UNIFLU University in Brazil with a Bachelor of Dental Science in 2012.  After completing a Graduate Diploma in Advanced Restorative Dentistry with a focus on cosmetic dentistry, Renata moved to Australia and is now a permanent resident who has fully embraced the Australian way of life.

Renata’s passion for dentistry means that she regularly attends national and international continuing education to keep her up to date with what is best for her patients. She is an active member of the Australian Dental Association and has undertaken training in the Invisalign Clear Aligner System to straighten teeth.

Outside of the clinic, Renata enjoys an active lifestyle including running and cycling throughout Melbourne’s bike paths. Renata’s travel bug also takes her to many places to immerse in the variety of cultures, cuisines and exciting activities the world has to offer.

“My greatest joy is forming long terz relationships with my patients and guiding them towards life-long oral health. I take great pride in creating an enjoyable and relaxed environment to make my patients feel at ease. I always strive to understand my patients’ priorities and needs and deliver gentle care that I would provide for my own family. I look forward to caring for you.”

Dr Michael D Letham

BDS (Hons)

“I aim to treat all of my patients as if they are family. As such, I strive to be caring, gentle and compassionate whilst always being thorough and meticulous. I love involving and educating my patients so they can make informed decisions about their dental treatment – and therefore have a healthy smile for life.” 
– Dr Michael D Letham

Mike established Bayside Smiles in 2006 in conjunction with his wife and fellow dentist Magda. Mike graduated from Sydney University in 2000 with Honours, receiving the R Morse Withycombe Prize for Proficiency in Clinical Periodontics (gum treatment). Mike worked throughout Australia and the UK gaining a broad range of experiences and knowledge, including active service in the Royal Australian Navy in the Persian Gulf.

Having now established his own practice, Mike’s goal is to provide high quality, long-term dental care to his patients over the next 20 years. Mike strives to provide a modern, holistic approach that is tailored to each individual’s requirements. His focus is on being thorough and meticulous whilst being caring and compassionate.

Mike is a member of the Australian Dental Association (ADA)Australian Osseointegration Society (AOS)Australian Society for Occlusal Studies (ASOS), Australian Prosthodontic Society (APS) and the International Team for Implantology (ITI).

Mike lives locally and has three young children Oliver, Lucy and Hugo.

Ms Mallory McDonald

BOH (Bachelor of Oral Health)

‘I strive for all of my patients to feel comfortable and cared for during their appointments. My hope is to provide you with gentle but thorough dental treatment, so we can achieve a healthy smile together.’ Mallory McDonald

Mallory grew up locally in Bayside where she attended St Leonard’s College, before going on to graduate as the top student from the Bachelor of Oral Health at the University of Melbourne. Since then, Mallory has had experience working in both private and public settings throughout Melbourne. As an avid traveler, Mallory has also volunteered her dental skills both in rural Australia and internationally.

Dually qualified as a dental hygienist and therapist, Mallory enjoys working with patients of all ages to help them achieve a healthy smile they can be proud of. With a strong focus on patient education, Mallory takes pride in ensuring her patients understand their oral condition and what we can do together to improve it.

Mallory appreciates that not everyone loves coming to the dentist, but hopes that she can work with you to make your experience as enjoyable as possible. She does this by employing a gentle treatment approach and working with you to overcome any concerns you may have.

Outside of work, Mallory loves to stay active and enjoys traveling – as an avid snow boarder, she loves traveling in search of great snow!

Kate Mortimer


Rebecca Harli

Dental Assistant

Adaleta Grozdanic

Treatment Coordinator

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