Can Sensitive Teeth Be Fixed Permanently?

📖 12 min read  ·  Updated 06/08/2026

The Honest Answer Nobody Gives You

Search this question and you will be told, endlessly, to buy a sensitive toothpaste. That is not an answer. It is a product recommendation wearing an answer's clothes.

Here is the real answer, and it splits cleanly in two. The symptom — that electric jolt when cold air, cold water or a spoon of ice cream hits the tooth — can almost always be brought under control. Often completely. Whether that control counts as a permanent fix depends on one thing only: is the underlying cause something that can be physically corrected, or is it something you will carry for life?

Dentine hypersensitivity is a symptom, NOT a disease. It is what an exposed nerve feels like. So the question is never really "can sensitivity be cured?" — it is "why is my dentine exposed, and can that exposure be undone?"

What Sensitivity Actually Is — The Mechanism In 60 Seconds

Enamel covers the crown of your tooth. Gum and bone cover the root. Underneath both sits dentine — a living tissue shot through with microscopic channels called tubules that run inward toward the nerve. Dentine is not solid. It is a bundle of straws.

When enamel wears away, or the gum recedes off the root, those tubules open to the mouth. The fluid inside them can now move. Cold, heat, sweetness, acidity, a puff of air — each causes rapid fluid shift inside the tubule, which mechanically deforms the nerve ending at the far end. The nerve knows only one word. Pain.

This is the hydrodynamic theory, proposed by Brännström in the 1960s and still the accepted explanation. It is described in the standard review literature, including West NX et al., "Dentin hypersensitivity: pain mechanisms and aetiology of exposed cervical dentin" (Clinical Oral Investigations, 2013), indexed on PubMed.

The implication matters enormously for the question you came here with. There are only two ways to stop the pain: block the tubule, or calm the nerve. A permanent fix requires either permanently covering the exposed dentine, or permanently removing what it connects to. Nothing else is permanent. Read Why Does Cold Water Hurt My Teeth? for the full mechanism.

Causes That CAN Be Permanently Fixed

This is the good news, and it is genuinely good. Some causes of tooth sensitivity are structural faults. A dentist finds the fault, repairs it, and the sensitivity ends. Not manages. Ends.

A Cracked Tooth

A crack lets fluid and bacteria flex through the tooth every time you bite. Classic presentation: sharp pain on release of biting pressure, not on the bite itself, often on one specific tooth you can point to. A crown, an onlay or a bonded restoration seals and splints the tooth. The pain stops and stays stopped. No toothpaste on earth touches a crack.

Decay

A cavity is a hole into dentine. Of course it is sensitive. Restore the cavity and the sensitivity resolves — permanently, provided the restoration holds and new decay does not form alongside it.

A Failing Or Leaking Filling

Old restorations develop microleakage at the margins. Fluid tracks under them into dentine. Sensitivity returns to a tooth that was fine for years. Replace the restoration and the sensitivity goes with it.

A Dying Or Inflamed Nerve

Where the pulp is already irreversibly inflamed, a root canal removes the nerve entirely. No nerve, no sensation, no sensitivity — permanently. This is the most absolute "permanent fix" that exists, and it is also the one you should want least. More on why below.

Causes You Can STOP — After Which Sensitivity Usually Settles For Good

This is the most under-appreciated category, and the one with the highest leverage. These causes are ongoing behaviours. The dentine is being exposed a little more, every day, by something you are doing. Stop the behaviour and you stop the progression — and in most people, the sensitivity gradually settles and stays settled.

Aggressive Brushing And Hard Bristles

Scrubbing hard, with a firm brush, in a horizontal sawing motion, abrades the tooth at the gum line and physically strips the gum. It is a leading cause of both cervical wear and recession. The fix is free: a soft brush, light pressure, small circular or short sweeping motions, and holding the brush like a pen rather than a hammer. Two fingers, not a fist.

Once the abrasion stops, the exposed dentine surface is left alone. Saliva deposits mineral onto it. Tubules gradually occlude naturally over weeks to months, and the sensitivity often fades away and does not come back — because the thing that kept re-opening the tubules has stopped. This is as close to a self-administered permanent fix as most people ever get.

Acid Erosion

Soft drink, sports drink, citrus, wine, vinegar dressings, kombucha, and reflux. Acid dissolves the mineral out of enamel and out of the surface of exposed dentine, re-opening the tubules faster than saliva can seal them. The tell is generalised sensitivity plus teeth that look increasingly translucent at the edges.

Cutting the frequency matters far more than cutting the volume. Ten sips of soft drink across a day is ten acid attacks. One glass with a meal is one. And do NOT brush within 30 minutes of anything acidic — the enamel is temporarily softened and you will brush it away. Rinse with water, wait, then brush. Full detail in Acid Erosion: Is the Damage Permanent?.

Grinding And Clenching

Bruxism flexes and wears teeth, cracks enamel, and drives cervical wear at the neck of the tooth. An occlusal splint made by a dentist absorbs the load. Stop the load and the ongoing damage stops with it.

The Cause That Does NOT Reverse — Gum Recession

Now the hard truth, and this is the part the internet keeps quiet about.

Receded gum does NOT grow back. There is no toothpaste, no mouthwash, no gel, no oil-pulling routine, no vitamin, no massage technique and no home remedy that regenerates lost gum tissue and lost bone over an exposed root. Once the gum has migrated down the root, that root stays exposed. Permanently.

And the root is not covered in enamel. It is covered in cementum — a thin, soft layer that wears off readily, exposing root dentine that is denser with tubules than crown dentine. That is precisely why recession sensitivity is so vicious and so persistent.

What you can do is stop the recession getting worse — and that part is entirely within your control. Recession is progressive when its cause is ongoing. Remove the cause and it typically halts. See Sensitive Teeth or Receding Gums? and Receding Gums: What Can Be Reversed? for what is and is not reversible.

Rung 1 — Desensitising Toothpaste: What The Evidence Actually Says

First rung on the ladder. Cheap, accessible, no appointment needed, and the correct starting point for the great majority of people. It works in one of two ways — and it matters which.

Now the honest part. The Cochrane systematic review by Poulsen S, Errboe M, Lescay Mevil Y, Glenny AM, "Potassium containing toothpastes for dentine hypersensitivity" (Cochrane Database of Systematic Reviews, 2006, Issue 3) examined the randomised evidence for potassium toothpastes and concluded there was insufficient evidence to support their efficacy for dentine hypersensitivity. That is the finding. We are not going to dress it up.

Read that carefully, though, because it is routinely misquoted in both directions. "Insufficient evidence" does NOT mean "proven not to work." It means the trials available were small, short, heavily placebo-affected and not good enough to draw a firm conclusion. Sensitivity trials are notoriously hard to run: the outcome is self-reported pain, the placebo response in pain research is large, and simply enrolling in a study makes people brush more gently.

And here is the sentence that answers the article's title for this rung: toothpaste is not permanent. Stop using it and the sensitivity commonly returns, because the exposed dentine is still exposed. You have not removed the cause. You have covered the symptom. That is a completely legitimate thing to do — indefinitely — but call it what it is. Comparison of the options in Best Toothpaste for Sensitive Teeth in Australia.

Rung 2 — Behaviour Change: Free, And The Only Rung That Can Be Permanent By Itself

If you do nothing else on this page, do this. It costs nothing, it is the single highest-leverage intervention available to you, and unlike everything else on the ladder it addresses the cause rather than the symptom.

Done consistently, this stops the progression. And when progression stops, the exposed surface is finally left alone long enough for saliva to mineralise it and for the tubules to occlude naturally. For a large number of people with mild sensitivity, this alone quietly resolves the problem — and it stays resolved, because the cause is gone.

Rung 3 — In-Chair Professional Treatment

If home care has been done properly for two months and the sensitivity is still interfering with your life, this is the next rung. A dentist has tools that are simply not available over the counter.

High-Concentration Fluoride Varnish

Painted directly onto the exposed root or the worn area. Far more concentrated than anything sold retail. Occludes tubules and hardens the surface. Cheap, quick, no anaesthetic. Wears off — typically reapplied at recall visits.

Professional Desensitising Agents And Resins

Oxalates, glutaraldehyde-based agents, and adhesive resin sealers applied to the exposed dentine to seal the tubules. Longer-lasting than varnish. Still not permanent — they wear and are reapplied.

Bonding And Composite Coverage

This one is a genuine step-change: the dentist physically covers the exposed dentine with a bonded composite restoration. The tubules are no longer open to the mouth. The sensitivity typically ends. It also restores the shape of a tooth that has been notched at the neck by years of abrasion.

Is it permanent? Nearly. Composite at the gum line sits in a high-stress, moisture-prone location. It chips, it stains at the margin, it debonds, and it needs replacing eventually — typically years, not decades. Call it long-lasting rather than forever. And note the trap: if you keep scrubbing hard, you will simply wear a notch around the new restoration.

The consensus recommendations of the Canadian Advisory Board on Dentin Hypersensitivity (Journal of the Canadian Dental Association, 2003) set out exactly this stepped approach — least invasive first, escalating only if the symptom persists. Every credible clinical protocol since has followed the same logic.

Rung 4 — Gum Grafting: The Closest Thing To A Permanent Fix For Recession

If your sensitivity is driven by recession and it is severe, this is the only intervention that addresses the actual cause. A periodontist takes connective tissue — commonly from the palate — and surgically places it over the exposed root, then advances the gum to cover it. A connective tissue graft, sometimes with a coronally advanced flap.

The exposed root is now physically covered. The tubules are no longer open to the mouth. For recession-driven sensitivity, this is as close to a permanent answer as dentistry offers.

Root coverage procedures have a substantial evidence base — the Cochrane systematic review by Chambrone L et al., "Root-coverage procedures for the treatment of localized recession-type defects" (Journal of Periodontology, 2010) found that connective tissue grafts are effective for gaining root coverage in localised recession defects. It is a real, established, evidence-supported procedure — not a fringe one.

Rung 5 — Root Canal: Permanent, And Almost Always The Wrong Answer

A root canal removes the pulp — the nerve — from the tooth. No nerve means no sensation. No sensation means no sensitivity. Ever again. It is, technically, the most absolutely permanent fix on this entire page.

And you should almost certainly NOT have one for sensitivity.

It is a major, irreversible intervention performed to abolish a symptom. It devitalises the tooth, which becomes more brittle and usually needs a crown afterwards, committing you to a lifetime of restorative maintenance on a tooth that was structurally sound. Nobody should undergo root canal therapy for dentine hypersensitivity alone.

The Full Ladder — Ranked Honestly

Red Flags — When It Is NOT Dentine Hypersensitivity At All

This section is the most important one on the page, and it has nothing to do with any product. Ordinary sensitivity is sharp, brief and stops the moment the trigger is removed. Two seconds. Gone.

If your pain does any of the following, it is NOT dentine hypersensitivity, and no desensitising product will help it.

Do Sensitive Teeth Get Better On Their Own?

Sometimes, yes — and understanding when tells you a great deal about your own case.

So — Can Sensitive Teeth Be Fixed Permanently? The Realistic Answer

For most people, the honest answer is this: controlled, yes — and often completely. But through ongoing management rather than a one-time cure — unless the cause is one a dentist can physically fix.

If you have a cracked tooth, decay or a failing filling, get it repaired and you are permanently done. If you have been brushing like you are sanding a deck or sipping soft drink all day, stop, and there is a genuinely good chance the sensitivity settles for good. If your gums have receded, accept the truth — the gum does NOT grow back, the root stays exposed, and you are managing a permanent anatomical change rather than curing a temporary condition. Manage it well and you may barely notice it. But you are managing it.

That is not a defeat. Most people who "fix" their sensitivity have in fact built a routine that keeps it silent — a soft brush used gently, sensible acid habits, and a desensitising toothpaste used consistently, twice a day, forever. It works. It just is not a cure, and anyone who tells you otherwise is selling you something.

Related reading: Sensitive Teeth or Receding Gums?, Receding Gums: What Can Be Reversed?, Best Toothpaste for Sensitive Teeth in Australia, Why Does Cold Water Hurt My Teeth? and Acid Erosion: Is the Damage Permanent?.

Also available: LACALUT^® Sensitive Mouthwash 300ml.

Medical disclaimer: This article is for general information only and does not constitute dental or medical advice. LACALUT® Sensitive is a cosmetic oral care product; it is not a treatment or cure for dentine hypersensitivity, gum recession, tooth decay or any dental condition. Consult a registered dental practitioner for diagnosis and treatment of tooth sensitivity.

Frequently Asked Questions — Can Sensitive Teeth Be Fixed Permanently?