Tooth Decay & Cavity Prevention

Your teeth are designed to last a lifetime — but only with the right care. Tooth decay is one of the most common chronic health conditions in the world, affecting children, teens, and adults alike. The good news is that it is almost entirely preventable. At Dentistry On Yorkdale, Dr. B. Rosales Verzonilla and our team help patients across Toronto protect their teeth with regular exams, professional treatments, and practical guidance for everyday oral care.

What Is Tooth Decay?

Tooth decay is the gradual destruction of tooth structure caused by acids produced by bacteria in the mouth. It begins on the outer surface of the tooth — the enamel — and, if left untreated, works its way inward through the softer dentin layer and eventually reaches the pulp, which contains the tooth's nerves and blood supply.

The process starts when bacteria in the mouth feed on sugars and starches from the foods and drinks you consume. As these bacteria digest sugars, they produce acids that attack the enamel. Over time, these repeated acid attacks weaken and break down the enamel, creating soft spots that eventually develop into holes — what we commonly call cavities.

Busting Cavities: Your Burning Questions

What causes tooth decay?

Tooth decay happens when bacteria munch on sugars, producing acid that munches away at enamel. It's a dental horror story!

How can I prevent cavities?

Brush like a warrior, floss like a ninja, and visit your dentist regularly. Say no to decay!

Are sugary foods really that bad?

Yes! Sugary snacks are tooth decay's best friends. Keep them at bay!

Is fluoride really necessary?

Absolutely! Fluoride is like a superhero for your teeth, battling decay and saving the day.

What to do if I have a cavity?

Don't panic! Book a dental appointment and let the pros handle the dirty work.

Tooth Wisdom Blogs

2026-03-01

Bacteria and Plaque

Your mouth naturally contains hundreds of species of bacteria. When you eat or drink, certain bacteria feed on the sugars and starches left behind and form a sticky, colourless film called plaque. Plaque clings to tooth surfaces and, if not removed by brushing and flossing, hardens into tartar (also called calculus) within 24 to 72 hours. Once tartar forms, it can only be removed by a dental professional during a cleaning.

2026-02-15

Sugar and Starch Consumption

The more frequently you consume sugary or starchy foods and beverages, the more fuel you provide to the bacteria that cause decay. It is not just candy and soft drinks — bread, crackers, chips, dried fruit, juice, and even milk contain sugars or starches that bacteria can feed on. Frequent snacking and sipping throughout the day is particularly harmful because it keeps acid levels elevated in the mouth for extended periods.

2026-01-10

Acid Attacks

Every time you eat or drink something containing sugar or starch, the bacteria in plaque produce acids that attack tooth enamel. Each acid attack lasts about 20 to 30 minutes after eating. If you snack or sip frequently, your teeth are under near-constant acid exposure with little time to recover between attacks.

2025-12-05

Dry Mouth

Saliva plays a critical role in protecting your teeth. It washes away food particles, neutralizes acids, and delivers minerals that help repair early enamel damage. Conditions or medications that reduce saliva flow — a condition known as dry mouth or xerostomia — significantly increase the risk of decay. Common causes include antihistamines, blood pressure medications, antidepressants, radiation therapy, and certain medical conditions.

How We Detect Tooth Decay

We uses a combination of methods to detect decay at the earliest possible stage.

A thorough visual examination is performed at every check-up. Using a dental mirror and explorer, Dr. Verzonilla inspects every surface of every tooth for signs of softening, discoloration, or visible cavities.

Digital X-rays reveal decay that is not visible to the naked eye, particularly between teeth and beneath existing fillings. Our digital X-ray system uses significantly less radiation than traditional film X-rays and produces instant, highly detailed images.

During your examination, Dr. Verzonilla also assesses your overall risk for decay by reviewing your dental history, dietary habits, oral hygiene routine, saliva flow, and any medications you take. This allows us to create a personalized prevention plan tailored to your specific needs.

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