About Us

Brush Your Teeth

Located in the heart of Cobourg you will find a brand new concept in dentistry – an Independent Dental Hygiene Clinic! This concept allows you to have your teeth scaled at your convenience in a relaxed atmosphere and at a reasonable cost.

In September of 2007 Bill 171 was passed which allows dental hygienists to work independently without onsite supervision from a dentist. In addition to dental scaling, other procedures such as teeth whitening, desensitizing, fluoride application as well as fabrication of sports mouthguards are available at the clinic. Recent studies have shown that oral health is directly related to your overall health and well being. It is recommended that you have your teeth scaled every 6 months to maintain good oral health.


Most insurance companies are now covering dental hygiene fees. Please check with your insurance provider for details. We follow the Ontario Dental Hygiene Fee Guide. Feel free to call the office to inquire about fees and any services you may be interested in. Click on any of the above services for an explanation as to what they are.

No dentist? No problem. We have compiled a list of dentists in the area who are accepting referrals from our office. Working together is an important aspect of meeting all of your oral health needs. We strongly recommend that you see your dentist on a yearly basis for a check up and x-rays if needed.


Hi! My name is Mary Ito and I began my career as a dental assistant graduating from George Brown College. After four years of assisting, I went on to complete my hygiene training at Durham College where I graduated as a registered dental hygienist in June, 1992. In May of 2008, I opened the first dental hygiene clinic in Cobourg called the Northumberland Dental Hygiene Clinic. I am a lifelong resident of Cobourg and I bring 28 years of experience as a dental hygienist within Northumberland County to the Clinic. As well, I have the credentials of being director/instructor of dental hygiene programs in both Oshawa and Kingston. I offer my clients customized dental hygiene care. My goal is to provide my clients with high quality preventative care in order to prevent gum disease and tooth decay.


I am a member of our provincial association, the Ontario Dental Hygiene Association (ODHA) as well as the national association, the Canadian Dental Hygiene Association (CDHA).  I was one of the founding members of the Dental Hygiene Practitioners of Ontario (DHPO).  I am also an active member of Northumberland Oral Health Coalition (NOHC).  This coalition works to improve access to dental care for those in our county that cannot afford it or are unable to access a dental office.  We work together with other Oral Health Coalitions across Ontario and form the Ontario Oral Health Alliance (OOHA).

I believe that everyone should have the right to good oral health since it is such a integral part of one’s overall health and well being. I will provide enough time to listen to your concerns along with providing you with a good quality dental scaling in a relaxed atmosphere while adhering to the new guidelines concerning COVID-19. I believe that education is a big part of prevention and I will try my best to answer any questions or concerns you may have.

Hi, my name is Lisa McCracken and I am thrilled to be working with Mary and Liz as the receptionist at Northumberland Dental Hygiene Clinic. 

I grew up in Colborne and went to college in Toronto where I spent the last 36 years working as an accountant for an Investment Counseling company. 

In 2020 I moved back to beautiful Northumberland County.  After all my travels I still think it is one of the most beautiful areas of the world.

In my spare time I like to cook, walk the dogs and watch my Leafs win the Stanley Cup (a girl can dream…there’s always next year).   

Call 289-252-0232 to book your appointment. I look forward to meeting you.

Hello! My name is Liz Rylance and I am so excited to be joining the team at Northumberland Dental Hygiene Clinic! For as long as I can remember, I have wanted to work in the dental field. I started my career as a Dental Assistant, graduating from Durham College in 1999. I knew right away that I wanted to be a Dental Hygienist and I completed the Dental Hygiene program at Algonquin College in 2002. Since then, I have been helping my clients to keep their smiles healthy in the Northumberland area, working in local dental practices. When Mary approached me to become independent and join her practice, I couldn’t pass up the opportunity to deliver treatment to my clients in a way that I have always wanted to! My goal is to provide personalized, thorough, gentle and stress-free care to my clients in a calm and pressure-free environment.

I am currently a member of our provincial association, the Ontario Dental Hygiene Association, as well as our national association, the Canadian Dental Hygiene Association. I regularly attend educational courses so I am practicing up to current standards of care. I am proud to say that Northumberland Dental Hygiene Clinic meets and even exceeds the new
safety guidelines regarding COVID-19. The safety and health of our clients is our number one concern and we will do whatever it takes to maintain it. When I am not elbow-deep in an oral cavity, I enjoy spending time with my husband Will and my two children, Jack and Olivia. I also love to cook and I am passionate about health and fitness. My remaining free time is spent volunteering with the Cobourg Police Service as an Auxiliary Constable.

I look forward to this next chapter in my career. I can’t wait to meet all of our clients and I promise I will go above and beyond to provide you with comfortable and thorough dental hygiene care.