Most cavities don’t hurt. That’s exactly why people ignore them until they do. By the time a tooth is keeping you up at night, the decay has usually been there for months. We see this pattern constantly at DentSpa — patients who flew in from London or Paris for what should have been a straightforward filling, but waited long enough that it became a root canal. Six months earlier, it was a 20-minute procedure. They waited, and it wasn’t.

Why didn’t it hurt until now?

Bacteria in your mouth feed on sugar and produce acid. That acid pulls minerals out of your enamel. Your saliva spends the rest of the day trying to put them back. For most people, it roughly balances out — until something tips the scale.

That something isn’t always diet. Dry mouth is a bigger driver than most people realise. Dozens of common medications reduce saliva flow — antihistamines, antidepressants, blood pressure drugs — and without enough saliva to buffer acid and rinse debris, cavities accelerate even in people who barely touch sugar. Some people have genetically thinner enamel and will fight this their whole lives regardless of how carefully they brush. Two patients, same diet, completely different cavity history. We see it every week.

According to the NIDCR, enamel can repair itself in very early decay using minerals from saliva and fluoride. Once a physical hole forms, that window closes. The tooth cannot rebuild what’s gone.

Plaque hardens into tartar within days if it isn’t removed. Once calcified, no toothbrush touches it. It sits below the gumline, triggers chronic low-grade inflammation, and slowly destroys bone — quietly, without obvious symptoms, for years. That’s why professional cleanings aren’t optional. They remove what home care physically cannot reach.

Is it too late to stop it, or just repair it?

Before a hole forms A chalky white patch on enamel is demineralisation — mineral loss that hasn’t yet become a cavity. At this stage, professional fluoride treatment can reverse the damage without drilling, without anaesthesia, without any of what people dread about dental visits. This is the only point in the process where decay can genuinely be undone rather than just repaired. It’s also the stage that gets missed most often, because there’s no pain.

An established cavity Once there’s a hole, it gets filled. At DentSpa we use composite resin — tooth-coloured, bonds directly to the natural tooth structure. Before removing anything, we take digital X-rays to see the full extent of decay, because sealing over decay that wasn’t fully cleared just traps it inside and continues the damage underneath. The ADA’s 2023 clinical guideline on caries treatment confirms selective removal as the standard approach.

More detail: Dental Fillings at DentSpa

When decay reaches the nerve The pulp — the inner chamber containing nerves and blood vessels — gets infected when decay goes deep enough. Sometimes it’s agonising. Sometimes there’s no pain at all until an abscess forms. Root canal therapy removes the infected tissue, cleans and disinfects the canals, then seals the tooth. A crown goes on afterward to protect what’s left.

The procedure’s reputation is worse than the reality. With proper anaesthesia and the endodontic tools we use at DentSpa, most patients tell us it felt similar to a standard filling. The pain people remember is the infection before the appointment — not the treatment itself.

When the tooth can’t be saved Some teeth are too far gone. When that happens, replacing the gap quickly matters — not for appearance, but because surrounding teeth drift into the space, the bite changes, and the jawbone resorbs with nothing left to stimulate it. Dental implants replace the root as well as the visible tooth, which is what stops that bone loss from occurring.

I’m pregnant — does that change anything?

We have a significant number of patients who come to us during or after pregnancy specifically because their oral health deteriorated in ways they didn’t anticipate. The mechanism is well-documented.

Elevated estrogen and progesterone increase blood flow to gum tissue and suppress local immune responses, making gums more reactive to bacteria — pregnancy gingivitis, which affects 60–70% of pregnant women according to a 2024 study in Medicina. It usually resolves after delivery, but left untreated it progresses to periodontitis — real bone and tissue loss.

Morning sickness adds enamel erosion on top of that. Stomach acid in the mouth is corrosive, and there’s one counterintuitive thing worth knowing: don’t brush immediately after vomiting. The acid temporarily softens enamel, and brushing at that point strips it away. Rinse with water, wait an hour, then brush.

Research links untreated periodontal disease during pregnancy to preterm birth and low birth weight, though causality is still being studied. What’s not in question: dental treatment is safe throughout pregnancy. Our digital X-ray equipment uses minimal radiation and every scan is taken with a lead apron as standard.

More detail: Dental Care During Pregnancy

What actually slows decay down?

Fluoride toothpaste, used correctly. Brush, spit, don’t rinse immediately — the residual fluoride sitting on your enamel keeps working. Rinsing straight after brushing removes most of the benefit.

Flossing. About 40% of each tooth’s surface sits between teeth, unreachable by any brush. That’s where interproximal cavities form, and they’re among the most preventable and most commonly missed.

Eating patterns, not just what you eat. Constant snacking means constant acid exposure. Three meals with gaps in between gives saliva time to neutralise and remineralise. One chocolate bar eaten quickly does less damage than a sugary coffee sipped across a four-hour meeting.

Professional cleanings. Tartar below the gumline can’t be removed at home. Full stop.

What doesn’t work: Oil pulling has no credible clinical evidence. Antimicrobial mouthwash reduces surface bacteria marginally. Neither reverses an existing cavity. Once structure is breached, it needs a dentist.

What are the signs I shouldn’t ignore?

Don’t wait for pain. By the time a tooth hurts on its own, the nerve is usually already involved — which means the treatment jumped from a filling to a root canal.

Come in if you notice sensitivity to cold or sweet that lingers after the trigger is gone, a visible dark spot, persistent bad breath that brushing doesn’t clear, or swelling near a specific tooth. Swelling especially — that often means an abscess, and it needs attention quickly.

A clinical exam with digital X-rays takes about 30 minutes. It shows what’s happening between teeth as well as on the surface. The point of going before anything hurts is simple: the options are fewer and more expensive once it is.

Not sure where you stand?

Our international patient coordinators speak English, French, Arabic, Spanish, Russian, Italian, and German. Before any commitment, you can speak directly with our clinical team online and get a clear picture of your situation from home.

Book your free consultation →

Frequently asked questions

Can You Have a Dental X-Ray While Pregnant?

Dental X-rays can be taken during pregnancy if they are truly necessary for diagnosis or treatment.

Dentists take special precautions to ensure safety, such as using a protective lead apron and limiting radiation exposure. These measures help protect both the mother and the baby while allowing the dentist to properly evaluate the dental problem.

Is Tooth Decay Common During Pregnancy?

Yes, dental problems such as cavities and gum disease can occur more often during pregnancy. Hormonal changes can make the gums more sensitive and prone to inflammation.

In addition, frequent snacking, cravings for sugary foods, and morning sickness — which exposes the teeth to stomach acids — may increase the risk of tooth decay during this time.

Maintaining good oral hygiene and visiting the dentist regularly during pregnancy can help keep both the mother’s and baby’s health protected.

Can Tooth Decay Cause Tooth Loss?

Yes, it can. When tooth decay is not treated, the damage can continue spreading deeper into the tooth. Over time, the infection may destroy a large part of the tooth structure and even reach the surrounding tissues.

If the decay becomes severe enough, the tooth may no longer be strong enough to be saved, which can eventually lead to tooth loss. This is why early treatment is so important.

How Is Tooth Decay Treated?

The treatment depends on how advanced the decay is.

In the early stages, dentists may apply fluoride gels or varnishes to help strengthen the enamel and slow down the damage.

If a cavity has already formed, the most common treatment is a dental filling. The dentist removes the damaged part of the tooth and fills the space with a protective material.

When the decay reaches deeper layers of the tooth and affects the pulp (the inner tissue containing nerves and blood vessels), a root canal treatment may be required to remove the infected tissue.

In cases where a large part of the tooth has been damaged, the dentist may also place a dental crown over the tooth to restore its shape, strength, and function.

Can Tooth Decay Heal Naturally?

In the very early stages, tooth decay can sometimes be slowed down or even partially reversed. This usually happens when the damage is limited to the outer layer of the tooth, known as the enamel.

At this stage, strengthening the enamel becomes important. Using fluoride toothpaste or a fluoride mouthwash, improving daily brushing and flossing, and reducing frequent sugar intake can help the tooth regain some of the minerals it has lost.

However, once the enamel has broken down enough to create a cavity — meaning a small hole has formed in the tooth — the tooth cannot repair itself. In that situation, professional dental treatment is necessary to stop the decay from getting worse.

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