Our Team

Thuy-Tu Nguyen, DMD

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I developed an interest in dentistry very early on.  From my first dental visit at age 4, it was always my goal to become a dentist.  I spent my formative years in the South Shore of Montréal until 1991, when I was accepted in Dentistry at the Université de Montréal.  After I obtained my degree, I pursued a General Practice Residency at the Montreal General Hospital. I have been practicing at Orleans Gardens Dental Centre since 1996.

My personal approach to dentistry has been shaped by my early experiences with wonderful, calm and caring dental professionals. I am fortunate to have a practice with friendly and committed staff and colleagues.  I would like to thank all my patients for trusting me with their care and that of their family members and also extend a welcome to new patients.

Ken Marenco, DDS

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Dr. Marenco completed his dental education at McGill University in 1998. In 1999, he went on to pursue graduate training at the Montreal General Hospital’s general practice residency. From 1999 – 2003, Dr. Marenco acted as faculty lecturer and clinical instructor to the dental residents at the Montreal General Hospital, a graduate teaching clinic of McGill University’s Faculty of Dentistry. From 1999 – 2003, he provided endodontic and surgical periodontal therapy at two general dental practices in Montreal while providing comprehensive dental care at a third clinic. In 2003, Dr. Marenco moved to Ottawa, where he became part owner of the Orleans Gardens Dental Centre.

David Chambers, DDS


Dr. Chambers earned his Bachelor of Science degree with Honours in Mathematics and Doctor of Dental Surgery from the University of Western Ontario in 2004. He enjoyed 7 years providing general dentistry to members of the Canadian Forces as a civilian dentist. With an interest in focusing expertise in orthodontics, Dr. Chambers returned to the University of Western Ontario for 3 years of full-time specialty training, obtaining his Master of Clinical Dentistry in Orthodontics in 2014.

David Craig, BSc, DDS

Dr. David Craig graduated from the University of Dalhousie 1992 where he obtained his degree in dentistry. He relocated to the Kingston area in 1997 where he continued to practice dentistry and ran the clinic at RMC Kingston. Dr. Craig took over the practice of Dr. John Brisley when he retired from his Napanee clinic in 1999, and of Dr. John Turner when he retired from his Kingston clinic in 2002. Since then, Dr. Craig has also inherited the patients of Dr. Tom McDonough and Dr. Lapeer as they ended their careers in dentistry. Dr. Craig also performs surgery in Ottawa involving wisdom teeth removal and implant placement.

Dr. Craig has taken continuing education and additional training in a variety of dental services such as Surgical Restoration, IV sedation and Advanced Nitrous Oxide, Periodontics and Implant Dentistry, Medical Emergencies, Nitrous Oxide and Oral Sedation, Operative Dentistry as well as Oral Surgery. Dr. Craig enjoys the small town feel that Kingston and Napanee have to offer. Aside from dentistry, Dr. Craig enjoys spending time with his wife, Krista, and his two beautiful children Portia and Pierce. He enjoys golf, boating, skiing and travelling.

Jessica Porter

Treatment Coordinator for Dr. Nguyen

Jessica joined our team in 2016 as an office administrator and treatment coordinator. She graduated from Everest College in 2012 with honors in the dental assisting programs level 1 and 2. When not working, Jessica enjoys shopping, baking cakes, and scrapbooking.

Jen Lafreniere

Treatment Coordinator for Drs. Chambers and Craig

Jen joined our team in June of 2019. She has lived most of her life in Orleans, but has also lived in the U.S. and the Middle East. Jen comes to us with 20 years of admin and customer service experience working in the non-profit industry and retail. When she isn’t working, her passions are her beautiful girls, her fur-baby boy, Stuart, and yoga.

Natalie Martin

Registered Dental Hygienist

Natalie has been a valued member of our Orleans Gardens Dental team since 1996.

She graduated from University of Moncton in 1993 with a Bachelor of Arts. In 1995 she moved to Ottawa from New Brunswick to pursue her education. In 1996 she graduated from La Cité Collegiale with a certificate in Dental Assisting and in 1998 she received her diploma in Dental Hygiene. Natalie was recruited to the board of La Cité collegiale Dental Hygiene from (2001-2008). Over the years she has worked in various fields including general practice, orthodontics, oral surgery and taught oral health education at various schools.

When not educating our patients about the importance of oral health she can be found travelling, baking and cooking delicious meals and spending as much time outdoors as she can with her husband and her two beautiful Chows ShenLung and FuShīLu.

Natalie's infectious laughter can be heard throughout our clinic and her cheery personality puts our nervous patients at ease. She serves our community in english or french, with smiles for everyone.

Kimberly Juma

Registered Dental Hygienist

Kim started at the Orleans Gardens Dental Centre in 2007 as a Dental Assistant.  Later that year she attended Niagara College for the Dental Hygiene program and returned to the office after graduating in 2009. Her infectious laugh can be heard throughout the clinic. In her spare time, Kim enjoys spending time with family, friends and her husband Khalim.

Jessica Pinto

Registered Dental Hygienist

Jessica has been working with Orleans Gardens Dental Centre since 2013.  She began her studies at La Cite Collegiale (one of Ontario’s French speaking colleges) in 2010, successfully completed their Dental Hygiene Program in the summer of 2012.  Although she has only just started her career, there is no doubt that she enjoys it and is looking forward to continue learning.  Jessica enjoys spending time with friends, family and beings outdoors with her dog.

Jennifer Glofcheskie

Registered Dental Hygienist

Jennifer is a Registered Dental Hygienist. She graduated from Niagara College in 2009, receiving the "Golden Scaler Award", for having the highest clinical standing in her graduating class. Jenn started her hygiene career with us in 2009 and was part of our team for one year before moving to Western Canada. She returned to our clinic in 2015 and plans to grow her career here. She has a passion for oral health, continuing education and client based care. Her calming personality will help you feel comfortable and at ease during your hygiene appointments. She is a great team player, her work ethic and love for her career adds to our office's patient based philosophy. In her free time she likes to be with her family and friends, visit the cottage, and loves to stay active and healthy.

Chrissie Lamb

Registered Dental Hygienist

Chrissie started her dental career in 1996 when she completed the co-op program in high school, this was just the stepping stone to a life long career in the dental field. Years later she completed the Level 2 dental assisting program and gained her experience with intra oral dental procedures. In 2005 she moved to Toronto and completed her Dental Hygiene program. After 11 years in Toronto she moved back to Orleans where she grew up and settled into the Avalon area. It's been chrissie's mission to educate her clients about the connection between oral health to overall health while reducing their inflammation. While not at work Chrissie spends time with her twin baby girls, husband and dog.

Tara Lynn Brady

Registered Dental Hygienist

Tara is a farm girl who was born and raised in Alberta. On her days off, she enjoys spending time with her friends, travelling to Alberta to visit her family, exploring what the beautiful province of Ontario has to offer, or relaxing at home with a glass of wine. Tara knew from a young age that she wanted to pursue a career in dentistry, she was just unsure of what position would suit her best.

Being a strong family-orientated girl, scared to travel far from home for hygiene school, she stayed in Alberta and excelled in her Dental Assisting program at Columbia College in Calgary. After working for 3 years as a Registered Dental Assistant, she learned she had a passion for educating and informing patients about their oral health and building a strong rapport with patients to make the trips to the dentist a little more pleasant. Tara decided to go back to school to become a Registered Dental Hygienist, and with immense support and encouragement from her family, she succeeded in completing the Dental Hygiene program at the Canadian National Institute of Health in Ottawa. She is dedicated to continuing education to improve her knowledge and skills in order to provide you with the highest quality of care, and will work hard to earn your trust and ensure comfort while you are at the office.

Laura Proulx

Registered Dental Hygienist

Laura knew from a young age that a career in health care was her calling, and is very happy with her decision to become a Dental Hygienist. She graduated from Algonquin College in early 2015, completing a three-year Dental Hygiene Program. In her practice, her calm demeanor and patience help contribute to a stress-free dental visit. She also provides specific and individualized care to each patient based on their personal dental priorities, and takes time to explain any findings.

In her spare time, Laura enjoys fitness, learning new languages, and movies. Whenever possible, she loves going home and visiting her parents.

Laura looks forward to meeting you and helping you achieve your dental goals.

Amanda Talma

Registered Dental Hygienist

Amanda graduated from the Dental Hygiene program at Algonquin College in 2017. She was born and raised in Orleans, and is proud to serve the community she grew up in by encouraging the achievement of a healthy smile. In her spare time, Amanda can be found chasing around her toddler or curling up with a good book. Amanda is very excited to join the team at Orleans Gardens Dental Centre, and looks forward to building her career here.

Jessie Davies

Dental Assistant for Dr. Marenco

Since graduating from Dental Assisting Level II in 2011, Jessie has had the opportunity to work with both Dr. Nguyen and Dr. Marenco, as treatment coordinator and chairside assistant. She has been Dr. Marenco’s main assistant since 2012 – the Barbie to his Ken.

Melanie Oetelaar

Dental Assistant for Dr. Nguyen

Melanie graduated from the Dental Assistant program Level II from La Cite Collegiale in 2011. She has been working at our office since October 2016, with both Dr. Nguyen and Dr. Marenco. Melanie is very versatile in the office, you can see her working at the front desk or helping in the back. She was raised in a small town outside of Ottawa. In her spare time, she enjoys playing hockey, walks with her dog and spending time with her family and friends.

Maggie Walters

Dental Assistant for Dr. Chambers

Maggie graduated as a Level II Dental Assistant from Everest College in 2012. She has worked in both general dentistry and orthodontics. She has been assisting Dr. Chambers in orthodontics since 2018 and loves the smiles they get to see all day! In her spare time, Maggie is a certified "maker of all things"! From baking, to knitting, painting or paper crafts, if you can imagine it, she's dabbled in it!

Jesseca Séguin

Dental Assistant

Jesseca is a dedicated Certified Dental Assistant Level II who graduated from La Cité Collégiale in 2016. Vibrant and compassionate, she thrives in treating patients like family and providing optimal dental experience.

Jesseca believes in the importance of trust between patients and their dental professionals and make them feel comfortable during all dental procedures. She began her journey with a position that was offered to her after doing a placement during college, where she gained experience for 4 years. Dentistry has been her passion since then.

She has a background in sales, marketing, accounting and administrative work and decided to apply her life experience into serving the community.

On her spare time, Jesseca enjoys the company of family and relatives, biking, the great outdoors, cooking, road trip and has developed a interest in fish keeping hobby. She is delighted of being a member of OGDC and looking forward to welcome you and your family.

Denisha Haldane

Dental Assistant

Denisha graduated from the Dental Assisting program at Algonquin College in March 2019 and has been with the team ever since. When she is not working she enjoys taking road trips, hiking in Gatineau and watching movies.

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