Canker Sores & Mouth Ulcer Care | Midtown Dental Toronto

Painful Canker or Cold Sores?

We can help—get treatment at Midtown Dental

Relief from Canker & Cold Sores Starts Here

Canker sores and cold sores can be more than just a minor irritation—they can disrupt daily life, making it painful to eat, drink, or even speak. Canker sores develop inside the mouth as small, painful ulcers, while cold sores appear as fluid-filled blisters on or around the lips. Whether caused by stress, infection, or other triggers, these sores can be persistent and uncomfortable.
At Midtown Dental, we offer advanced, professional treatments that not only provide immediate relief but also promote faster healing and help prevent recurring outbreaks. Our expert team is here to ensure you get the most effective care, so you can get back to feeling comfortable and confident.

What Are Canker Sores & Cold Sores?

Canker Sores (Aphthous Ulcers)
Canker sores are small, round or oval ulcers that develop inside the mouth, often on the tongue, inner cheeks, or gums. While they are not contagious, they can be extremely painful, making it difficult to eat or talk.

Causes of Canker Sores:

Stress or hormonal changes
Nutritional deficiencies (iron, B12, folic acid)
Minor injuries from dental work, braces, or biting
Acidic or spicy foods that trigger irritation

Cold Sores (Oral Herpes)

Cold sores, also known as fever blisters, are caused by the herpes simplex virus (HSV-1). These painful, fluid-filled blisters typically form around the lips and mouth. Unlike canker sores, cold sores are contagious and can spread through direct contact.

Cold Sore Triggers:

Stress and fatigue
Sun exposure
Weakened immune system
Illness or fever

Effective Treatment Options at Midtown Dental

At Midtown Dental, we offer a range of professional treatments to provide fast relief and long-term prevention.
Our laser therapy is a painless, non-invasive option that reduces pain instantly, speeds up healing, and minimizes future outbreaks.
We also provide prescription-strength antiviral medications, medicated mouth rinses, and professional ointments to treat and soothe sores effectively.
For patients experiencing frequent outbreaks, we develop customized prevention plans, focusing on dietary adjustments, immune support, stress management, and, if needed, preventive antiviral therapy. Our goal is to help you heal quickly and reduce the chances of recurring sores.

Oral Sore & Soft Tissue Treatments

Midtown Dental provides a full range of treatments for oral discomfort and soft tissue conditions, including:

Oral ulcer management
Relief for gum irritations
Tongue sores and inflammation care
Treatment for cheek and lip biting injuries

Common Triggers and Prevention Tips

Canker sores can be triggered by many factors including stress, minor mouth injuries, hormonal changes, certain foods, and nutritional deficiencies. Acidic or spicy foods and abrasive oral hygiene products containing sodium lauryl sulfate may also cause flare-ups. Being mindful of these triggers and adopting gentle oral care practices, like using a soft-bristled toothbrush and avoiding harsh toothpaste, can help reduce the frequency of canker sores. Eating a balanced diet and maintaining proper nutrition supports overall oral health and may prevent recurrent outbreaks. At Midtown Dental Centre, we guide patients on how to minimize triggers and improve daily habits for better oral comfort.

When to Seek Professional Care

While most canker sores heal on their own within one to two weeks, persistent or frequent sores could indicate underlying health issues. If your sores last longer than two weeks, recur often, or come with symptoms such as fever, significant swelling, or difficulty eating, it’s important to seek a dental evaluation. Prolonged or severe sores may be related to immune system responses or nutritional deficiencies that require targeted treatment. Our team at Midtown Dental Centre provides thorough assessments to identify the cause of your symptoms and offers personalized treatment plans to promote faster healing and long-term relief.