Cavities are more common than you might think, and they often start subtly with sensitivity to hot or cold foods or a dull ache in your tooth. But there’s another sign people don’t always associate with cavities—persistent bad breath.
When bacteria build up and begin damaging the tooth’s enamel, they can create unpleasant odours that linger even after brushing. If you’re experiencing ongoing bad breath alongside other oral discomfort, it may be time to visit your dentist for a closer examination.
What Are Cavities?
Each tooth is made up of 3 layers: the outer enamel, the middle dentin, and the soft inner pulp, which contains nerves and blood vessels. Enamel is your tooth’s natural armour—but it isn’t invincible.
Every day, your mouth is home to hundreds of types of bacteria. These bacteria feed on sugars from food and drinks, producing acid as a byproduct. Over time, this acid can wear down the enamel, mainly if plaque builds up and isn’t removed through brushing, flossing, and regular dental cleanings.
When enamel becomes weak or damaged, bacteria can reach the deeper layers of the tooth, ultimately leading to tooth decay. These small areas of damage are known as cavities or dental caries.
How Cavities Cause Bad Breath
Cavities create spaces where bacteria can multiply. As bacteria digest food particles and break down enamel, they release gases that cause foul odours. This is one way tooth decay can contribute to noticeable bad breath.
When food debris gets trapped in these areas, especially between teeth or in the grooves of molars, the smell can become more noticeable. Left untreated, bacteria can continue to spread, irritating the gums and potentially leading to infection, which may worsen over time, affecting breath.
Signs You Might Have a Cavity
Cavities don’t always present with severe pain. In fact, many people aren’t aware they have a cavity until they start to feel sensitivity or pain. Some of the most common symptoms include:
- Sensitivity to hot, cold, or sweet foods and drinks
- Pain when biting or chewing
- Visible holes or dark spots on the tooth
- Ongoing bad breath or an unusual taste in the mouth
- Discomfort that doesn’t go away
If you’re experiencing one or more of these signs, visiting a dentist can help prevent the issue from getting worse.
How Cavities Are Treated
The earlier a cavity is diagnosed, the simpler it is to treat. Your dentist will assess the extent of the decay and recommend an appropriate option to restore the tooth and help prevent further problems. Catching decay early often allows for less invasive care and easier recovery.
Fluoride Treatment
In the earliest stage of decay—known as incipient caries—the enamel begins to weaken, but no cavity has fully formed yet. At this point, a fluoride treatment may help strengthen the tooth’s surface and slow the progression of decay.
After cleaning the area and removing any plaque, your dentist can apply a fluoride varnish or gel to encourage remineralization and reinforce your enamel. This noninvasive approach is often recommended for people with early signs of enamel wear or a higher risk of developing cavities.
Fillings
Once a cavity has developed, a filling is the most common treatment. The decayed portion of the tooth is carefully removed, the area is cleaned, and a tooth-coloured resin is used to restore strength and function.
This can prevent further damage and protect the tooth from future decay. Fillings are typically completed in one visit and are a routine part of modern dentistry.
Root Canal
If decay reaches the inner pulp of the tooth—where nerves and blood vessels are located—a root canal may be needed. The procedure involves removing the infected tissue, disinfecting the canal, and sealing it with a filling or crown.
Though the idea of a root canal can seem daunting, today’s techniques make it a relatively comfortable and effective option. In many cases, it allows patients to keep a natural tooth that might otherwise need to be removed.
Tooth Extraction
In severe cases where the tooth can’t be repaired, extracting the tooth might be the right choice. The area is numbed, and the damaged tooth is gently removed.
Afterward, your dentist can discuss replacement options with you, such as implants, bridges, or dentures. Replacing a missing tooth can help maintain your bite and prevent shifting in neighbouring teeth.
When Bad Breath Could Mean a Cavity
Bad breath that doesn’t go away could be more than a dietary issue or forgetting to brush your tongue. It might be a sign of a cavity. Cavities can contribute to lingering odours as bacteria build up and affect your enamel and gums.
If you’re experiencing persistent bad breath, sensitivity, or tooth pain, Hill Top Dental Centre can help identify the cause and recommend the right treatment for your needs. Book an appointment today to support your smile and oral health.
