Tooth Decay: What Does a Cavity Look Like, Causes and Treatment

Recognise the Signs Early and Learn How iHeart Smiles Can Help

What Does a Cavity Look Like?

Tooth decay is one of the most common dental problems and often develops quietly before noticeable pain begins. Many people ask what does a cavity look like, but early decay is not always visible. It may start as a chalky white spot, progress to a brown or dark area, or appear as a small hole in the tooth surface as enamel breaks down.

As decay advances through the dental decay stages, bacteria penetrate deeper into the tooth, leading to sensitivity, aching or sharp pain. A decaying tooth may feel sore when chewing, respond to hot or cold, or cause persistent discomfort. In more severe cases, untreated cavities can lead to infection, abscess with teeth, wisdom tooth pain or widespread damage affecting surrounding teeth.

At iHeart Smiles, we focus on early detection and gentle treatment of tooth decay. Whether you are noticing early signs of tooth decay or experiencing ongoing pain, our team provides personalised care to stop decay, relieve discomfort and protect your long term oral health.

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Common Reasons for Tooth Decay and Cavities

Tooth decay develops when bacteria feed on sugars and produce acids that weaken and erode enamel. This process often occurs slowly and can go unnoticed until pain or visible damage appears. Understanding what causes decay helps explain why cavities form and how they progress through different stages.

Recognising the cause early allows treatment to begin before decay reaches deeper layers of the tooth, reducing the risk of infection, nerve damage or tooth loss.

How Tooth Decay and Cavities Are Treated

Fillings, Crowns & Root Canal Treatment

When restoring individual teeth, we often begin with dental fillings if the damage is minor. For more significant damage, an all-ceramic filling may be recommended to strengthen the tooth. Using a digital scanner, we design and mill a ceramic restoration that bonds seamlessly to your tooth, restoring both function and aesthetics as though the damage never occurred.

Oral Appliance Therapy

Oral health therapy offers a simple yet powerful solution for a range of dental and sleep concerns. We often recommend custom devices for patients dealing with bruxism, jaw pain, clenching, snoring, and mild sleep apnoea. These oral appliances are worn during sleep to support the jaw and airway, ease muscle tension, and protect against the damage caused by grinding and a worn smile.

Professional Dental Cleaning

Sometimes, the best next step isn’t a treatment or product — it’s a professional clean. If the services or solutions we discuss aren’t quite what your smile needs right now, we may recommend a dental cleaning instead. A professional clean helps remove built-up plaque and tartar, supports gum health, and creates a healthier foundation before moving forward with any other dental care.

How to Prevent Tooth Decay and Cavities

Preventing tooth decay relies on consistent oral care, healthy habits and early intervention. Daily brushing and flossing, limiting sugary foods and attending regular dental visits all help reduce the risk of cavities, toothache and long term dental damage.

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Single-storey brick dental clinic in Tweed Heads with red tiled roof, clear signage reading Tweed Dental | I Heart Smile, and surrounding greenery, photographed for I Heart Smile.

47 Kirkwood Road, Tweed Heads NSW 2485

Suite 5B/2431 Gold Coast Hwy Mermaid Beach, QLD, 4218

FAQs About Tooth Decay and Cavities

Everything you need to know before your appointment

What does a cavity look like?

A cavity may look like a white, brown or dark spot on the tooth, or appear as a small hole once enamel breaks down. Early cavities are often hard to see and may only be detected during a dental check before pain starts.

What does dental decay look like as it worsens?

As dental decay progresses, the tooth may darken, chip or develop a visible hole. Advanced decay can cause sensitivity, pain or swelling as bacteria reach deeper layers and irritate the nerve inside the tooth.

Why do my teeth ache?

Teeth ache when decay reaches the dentine or nerve of the tooth. Pain may occur when chewing or with hot and cold foods and often signals progressing decay that needs prompt dental treatment.

What are the stages of tooth decay?

Tooth decay stages include enamel weakening, dentine involvement, nerve infection and abscess formation. Treating decay early can stop it from progressing and prevent pain, infection or tooth loss.

How can I reduce toothache pain?

To reduce toothache pain, keep the area clean, avoid chewing on the affected side and seek dental care promptly. Pain relief may ease discomfort temporarily but does not treat the underlying cause of decay.

Do you accept health insurance?

Yes, iHeart Smiles accepts all major health funds. We work directly with your health insurance provider to ensure your claims are processed efficiently. If you have any questions about coverage or need assistance with claims, please feel free to contact us at info@iheartsmiles.com.au or call (07) 5523 1666.

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