Teeth become sensitive when the protective enamel wears thin or the gums recede, exposing the softer inner layer of the tooth so hot, cold, sweet or acidic triggers reach the nerve. Common causes include worn enamel, receding gums, grinding, aggressive brushing, decay and a cracked tooth. Using a sensitivity toothpaste and a soft brush can help, but lasting relief means finding the cause. Sydney Smile Centre in Pagewood can check your teeth — call 02 9349 2387.

That sharp twinge when you sip cold water or bite into ice cream is one of the most common dental complaints. Sensitivity is usually manageable, but it can also be an early warning of decay, gum problems or a cracked tooth. Below we explain what causes sensitive teeth, how to ease it at home, the treatments we offer in Pagewood, and when sensitivity is a sign of something that needs prompt attention.

What causes sensitive teeth?

Sensitivity happens when the dentine — the softer layer beneath your enamel — becomes exposed. Tiny channels in the dentine lead to the nerve, so temperature and sweetness can trigger a short, sharp pain. Common reasons the dentine becomes exposed include:

• Worn enamel: from acidic foods and drinks or general wear over the years.
• Receding gums: which expose the root surface, where there is no protective enamel.
• Aggressive brushing: scrubbing hard or using a firm brush can wear enamel and push gums back.
• Teeth grinding (bruxism): which flattens and thins the biting surfaces.
• Decay or a cracked tooth: allowing triggers to reach the inner tooth directly.
• Recent whitening or dental work: which can cause temporary, short-lived sensitivity.

How to manage sensitivity at home

Simple changes often reduce day-to-day sensitivity. These steps are designed to help but do not replace a dental check-up:

• Use a sensitivity toothpaste: these are made to calm the nerve response and work best used consistently over a few weeks.
• Switch to a soft-bristled brush: and brush gently in small circles rather than scrubbing hard.
• Ease off acidic foods and drinks: such as citrus, soft drinks and wine, and rinse with water after them.
• Wait before brushing after acidic food: give enamel time to re-harden rather than brushing straight away.
• Avoid very hot or very cold triggers while your teeth settle.

If sensitivity lingers despite these measures, it is worth having your teeth assessed rather than simply living with it.

In-clinic treatments for sensitive teeth

At our Pagewood practice we first find the cause, then match the treatment to it. Options can include:

• Fluoride application: a professional fluoride treatment to strengthen enamel and reduce sensitivity.
• Bonding or sealants: tooth-coloured material to cover exposed root surfaces or worn areas.
• Treating decay: a filling to repair a cavity that is letting triggers reach the nerve.
• Gum care: cleaning and treatment where gum recession or gum disease is involved.
• A night guard: a custom guard to protect teeth if grinding is wearing them down.
• Root canal treatment: in the less common cases where the nerve is significantly affected.

How much do treatments cost?

The right treatment depends on what is driving the sensitivity, so costs vary. A comprehensive exam starts from $190 and dental x-rays from $65, which is usually where we begin so we can pinpoint the cause. If a filling is needed for decay, or root canal treatment from $1,100 in more advanced cases, we will explain this first. These are indicative starting points only — book a consultation for an exact quote and your treatment plan. We offer HICAPS on-the-spot claiming with all major health funds, and payment plans and Afterpay are available.

When sensitivity signals a bigger problem

Short, sharp sensitivity to temperature is usually harmless. However, you should see a dentist promptly if you notice:

• Sensitivity in just one tooth that is getting worse, which can indicate decay or a crack.
• Pain that lingers for more than a few seconds after the trigger is gone.
• Spontaneous pain or pain that wakes you at night.
• Sensitivity with swelling, a bad taste or visible damage to a tooth.
• Sensitivity plus bleeding or receding gums, which may point to gum disease.

These signs suggest the cause is more than surface wear, and early treatment usually means a simpler fix.

Book a check-up in Pagewood

If sensitive teeth are affecting what you can comfortably eat and drink, a check-up is the best first step. We see patients from Maroubra, Mascot, Botany, Kingsford, Randwick, Coogee and across the Eastern Suburbs, and we welcome new patients. Dr Ana Maria Garcia and Dr George Hedges will assess your teeth and gums and talk you through your options. We are open Monday to Friday 9am to 5pm and Saturday 9am to 1pm. Call 02 9349 2387 or request an appointment online at our website.

Why are my teeth suddenly sensitive?

Sudden sensitivity often follows something specific, such as recent whitening, a new filling, a period of harder brushing, or grinding your teeth. It can also be an early sign of decay, a cracked tooth or gum recession. If it does not settle within a couple of weeks of gentle care and sensitivity toothpaste, have it checked by a dentist.

Does sensitivity toothpaste actually work?

For many people, yes. Sensitivity toothpaste contains ingredients that calm the nerve response or block the tiny channels in the exposed dentine. It usually needs to be used consistently for a few weeks to build up its effect rather than working instantly. If it does not help after that, the sensitivity may have an underlying cause that needs treatment.

Can sensitive teeth be a sign of decay?

They can be. Sensitivity that is focused on one tooth, that is getting worse, or that lingers after the trigger is gone can indicate decay or a cracked tooth rather than simple enamel wear. General cold sensitivity across several teeth is more often surface-related. A dentist can tell the difference with an examination and, where needed, x-rays.

Will whitening make my teeth sensitive?

Teeth whitening can cause temporary sensitivity that typically settles within a day or two. Using a sensitivity toothpaste beforehand and following your dentist’s guidance can help reduce it. Professional whitening supervised by a dentist lets us tailor the approach to your teeth. If sensitivity after whitening is severe or does not fade, let us know.

How can I stop sensitive teeth pain at home?

Use a sensitivity toothpaste consistently, switch to a soft-bristled brush and brush gently, and cut back on acidic foods and drinks such as citrus and soft drinks. Avoid very hot or very cold triggers while your teeth settle, and do not brush immediately after acidic food. If the pain persists, book a dental assessment to find the cause.

How do I book a dental check-up in Pagewood?

Call Sydney Smile Centre on 02 9349 2387 to book a check-up for sensitive teeth, or request an appointment online at our website. We are open Monday to Friday 9am to 5pm and Saturday 9am to 1pm, and we welcome new patients from Pagewood, Maroubra and the wider Eastern Suburbs.