The Impact of Marijuana on Your Oral Health

From the desk of Dr. Cassia Braulio – Glen Erin Dental

Dear Patients,

As your dental care provider, my goal is to help you maintain not just a healthy smile — but a healthy body overall. One topic that has become increasingly relevant in recent years is the use of cannabis (marijuana), whether for recreational or medical purposes.

With marijuana use now legal in Canada, it's more important than ever to understand how it can affect your oral health — and why it’s essential to be open with your dental team about any cannabis use.

Let’s explore the potential risks and what you can do to protect your smile:

1. Increased Risk of Cavities

Cannabis consumption can often trigger an increase in appetite (commonly called the "munchies"), especially for sugary snacks. Additionally, cannabis edibles themselves tend to be high in sugar. These habits significantly raise your risk for tooth decay and cavities — particularly when proper brushing and flossing are overlooked.

2. Dry Mouth (Xerostomia)

Marijuana commonly leads to reduced saliva flow, causing dry mouth. Saliva plays a vital role in protecting your teeth and gums by washing away food particles and neutralizing acids. Chronic dry mouth increases your risk for:

• Cavities

• Gum disease

• Oral infections (such as oral thrush)

3. Gum Disease and Periodontal Complications

Studies have shown a strong association between cannabis smoking and periodontal disease, which affects the gums and supporting structures of your teeth. Cannabis can contribute to:

• Inflammation of the gums

• Faster progression of gum disease

• Possible tooth loss over time

4. Increased Risk of Oral Cancer

Cannabis smoke contains many of the same carcinogens found in tobacco. Repeated exposure can lead to changes in your oral tissues, increasing the risk of developing oral or neck cancers. Regular screening is essential if you smoke cannabis.

5. Complications During Dental Visits

Using marijuana before a dental appointment can complicate your care. It may:

• Elevate your heart rate and cause anxiety

• Interfere with local anesthetics and sedation, making numbing (freezing) less effective or less safe

• Affect how your body responds to medications used during treatment

That’s why we always encourage you to let us know about any cannabis use — not to judge, but to protect your safety and provide the best possible care.

My Final Thoughts

At Glen Erin Dental, our priority is your health, comfort, and trust. If you use cannabis — occasionally or regularly — we’re here to support you with understanding, professionalism, and tailored care.

As always, maintaining good oral hygiene, keeping up with your regular checkups, and being honest with your dental provider will help us care for you better.

We’re here for your whole health — and every smile.

Warmly,
Dr. Cassia Braulio
Glen Erin Dental