Why Enamel, Dentin and Pulp Matter: Dental Anatomy Explained Layer by Layer

A woman in her forties bites into a cold pear at her desk and feels a short, bright jolt in a back molar. It passes in a second. She checks the tooth in a mirror and sees nothing obvious, no dark spot, no chip. Yet something has clearly changed, and she is left wondering what is actually going on under that smooth white surface.

The answer lies in the tooth structure itself: enamel, dentin and pulp, three layers that behave almost like three different materials glued together. One is closer to stone than to living tissue. One is bone-like and surprisingly sensitive. One is soft, wet and full of nerve endings. Understanding how they fit together explains why a tooth can hurt without a visible hole, why a small cavity can sit quietly for months, and why dentists talk about “depth” more than size.

This explainer walks through each layer, what it does, how it gets damaged and what the evidence says about repair.

What are the anatomical structures of a tooth?

Picture a tooth as an iceberg. The visible part above the gum is the crown; the hidden part anchored in the jawbone is the root; the narrow band where the two meet at the gum line is called the neck. Most adults have 32 teeth, and each one follows this same basic architecture even though incisors, canines, premolars and molars look quite different from the front, according to the Cleveland Clinic’s overview of teeth.

Cut a tooth in half lengthwise and you see the layers. Enamel is the thin, glossy outer coat on the crown only. Dentin is the thick, pale yellow body of the tooth that runs from crown to root tip and makes up most of its bulk. The pulp is the soft core in the center, a chamber in the crown that narrows into one or more root canals as it travels down each root, as MedlinePlus’s tooth anatomy diagram shows.

Two more structures matter, even though they rarely make headlines. Cementum is a thin, bone-like covering on the root surface, taking over where enamel stops at the neck. The periodontal ligament is a sling of tiny fibers that runs from the cementum to the surrounding jawbone, holding the tooth in its socket with a little give, which is why a healthy tooth moves a fraction of a millimeter when you bite.

Why does the arrangement matter so much? Because sensation and blood supply live only in the inner layers. Enamel has no nerves. Dentin has no nerves either, strictly speaking, but it transmits signals to the pulp. The pulp has plenty. So the pain a person feels tells the dentist roughly how deep a problem has traveled, long before an X-ray or a probe confirms it.

Tooth structure, enamel, dentin and pulp: how the three layers compare

The three layers are easiest to understand side by side. Their differences in hardness, mineral content and living cells explain nearly everything about how decay, wear and injury behave.

Feature	Enamel	Dentin	Pulp
Location	Outer shell of the crown	Body of crown and root, under enamel and cementum	Central chamber and root canals
Main makeup	Mostly mineral (hydroxyapatite crystals), very little water or protein	Mineral plus collagen, threaded with microscopic tubules	Nerves, blood vessels, connective tissue, immune cells
Living cells inside?	No; enamel-forming cells are lost after eruption	Yes, at the pulp border (odontoblasts)	Yes, richly
Feels pain?	No	Indirectly, via fluid movement in tubules	Yes, directly
Can it regrow?	No new enamel; surface remineralization only	Limited new dentin laid down from the pulp side	Can heal from mild irritation; dies if inflammation becomes severe
Typical failure	Acid dissolution, wear, chipping	Rapid decay once exposed, sensitivity	Inflammation (pulpitis), death (necrosis), abscess

Two patterns stand out. First, the tooth gets softer and more alive as you move inward. The Cleveland Clinic’s tooth enamel page describes enamel as the hardest substance in the human body, roughly 96 percent mineral, while dentin carries far more organic material and water. Second, the capacity for repair runs in the opposite direction from durability. The toughest layer has the least ability to fix itself; the softest layer has the most, up to a point.

That trade-off is the central story of dental anatomy. Enamel buys decades of protection at the price of being irreplaceable. Dentin and pulp can respond to injury, but only while the pulp remains healthy enough to do the work.

How does tooth enamel actually work?

Enamel is built once and never again. During childhood, specialized cells called ameloblasts lay down mineral crystals in tightly packed rods that run from the dentin border out to the surface. Once the tooth erupts through the gum, those cells are gone. What remains is essentially a ceramic: brilliant at resisting compression, poor at healing, and vulnerable to acid in a very specific way.

The thickness varies across the crown. Enamel is thickest at the cusps and biting edges, where it may reach around 2.5 millimeters, and thins to almost nothing at the neck of the tooth near the gum line, according to Cleveland Clinic’s enamel overview. This is why the area just above the gum is a common site for both sensitivity and early decay: the armor is thinnest exactly where plaque likes to collect.

Color comes mostly from underneath. Enamel is semi-translucent, so the yellowish dentin beneath shows through. As enamel thins with age or wear, teeth often look darker even when perfectly clean. Whitening products act on stains within enamel; they cannot thicken it.

Chemically, enamel lives in constant negotiation with saliva. Every time acid touches the surface, a little mineral dissolves out. When the mouth returns to a neutral state, calcium and phosphate from saliva drift back in. Fluoride helps by encouraging a more acid-resistant crystal to form during that rebuilding phase. The NHS notes that this is the main reason fluoride toothpaste is recommended for both children and adults.

So enamel is not inert. It is a mineral bank with daily deposits and withdrawals. Trouble starts when withdrawals outpace deposits for weeks or months at a stretch, and the surface becomes porous enough for bacteria to move in.

How does tooth enamel get damaged?

Enamel fails in three main ways: acid, friction and force. They often overlap in the same mouth.

Acid from bacteria is the classic route. Plaque bacteria feed on sugars and starches and release acids that pull mineral out of enamel. The NIH’s National Institute of Dental and Craniofacial Research describes decay as a process that unfolds over time rather than an event; the earliest sign is often a chalky white spot where mineral has been lost but no cavity has yet formed. If the cycle continues, the surface collapses into a hole. Frequency matters more than quantity here. A sweetened drink sipped over an afternoon keeps the mouth acidic far longer than the same drink finished in five minutes, which is why the NHS emphasizes how often sugar is consumed rather than only how much.

Acid from outside the body is the second route. Citrus, vinegar-based dressings, sports drinks, carbonated beverages and stomach acid from reflux or repeated vomiting can all dissolve enamel directly, without bacteria. Dentists call this erosion. It tends to produce smooth, cupped surfaces rather than distinct holes.

Friction and force do the rest. Brushing too hard with a stiff brush, especially right after an acidic meal when the surface is temporarily softened, wears enamel at the neck of the tooth. Grinding or clenching, often at night, flattens cusps and can crack enamel outright. Biting ice, hard candy or the occasional olive pit produces chips.

A few conditions make enamel weaker from the start. Developmental defects, some childhood illnesses during tooth formation, and a dry mouth from medications or medical conditions all reduce the natural protection. Mayo Clinic lists dry mouth among the recognized risk factors for cavities precisely because saliva is the tooth’s built-in repair fluid. Less saliva means fewer deposits into the mineral bank.

Can enamel grow back? What remineralization really means

Short answer: no, and also a little. The distinction matters because the phrase “rebuilds enamel” appears on many product labels and means something narrower than most people assume.

New enamel cannot form. The cells that made it are gone. A chip, a crack or a cavity that has broken through the surface will not fill itself in, no matter how good the diet or toothpaste. That kind of loss is permanent, which is why dentists restore it with filling material or a crown.

What can happen is remineralization of an early lesion. When acid has leached mineral from enamel but the surface is still intact, calcium and phosphate from saliva can move back into the porous areas, and fluoride can help the rebuilt crystals resist the next acid attack. The NIDCR describes this reversal of early decay as one of fluoride’s key benefits, and it is the reason a dentist may choose to watch a white spot rather than drill it. Success is not guaranteed and depends on plaque control, sugar frequency and saliva flow, which is why a monitoring plan usually comes with specific hygiene advice rather than a promise.

The everyday levers are unglamorous. Brushing twice a day with a fluoride toothpaste, spitting rather than rinsing so fluoride stays on the teeth longer, cutting the number of sugary or acidic exposures across the day, and waiting a while after acidic food before brushing all tilt the balance toward deposits. The NHS also advises against brushing immediately after eating or drinking acidic items because the softened surface is easier to wear away.

Products marketed as enamel-repairing generally work within this same remineralization window. Evidence supports fluoride well; evidence for some other ingredients is more limited or mixed. When a dentist recommends a specific product, the decision is best made with them, based on the individual risk picture rather than a label.

Dentin: the layer that feels

Dentin does most of the structural work in a tooth and gets almost none of the attention. It forms the bulk of both crown and root, gives the tooth its slight flexibility so enamel does not shatter under load, and carries sensation from the surface to the pulp.

Under a microscope, dentin looks like a dense bundle of drinking straws. Each straw is a tubule, a tiny channel running from the pulp outward toward the enamel or cementum. The tubules are filled with fluid and, near the pulp, with fine extensions of the cells that made the dentin. There can be tens of thousands of tubules per square millimeter, and they are more numerous and wider near the pulp than near the surface.

This structure explains the pear-bite jolt described at the start of this article. When cold, sweet, or air hits exposed dentin, fluid inside the tubules shifts. That movement disturbs nerve fibers at the pulp border, which register it as a sharp, short pain. Nothing is wrong with the nerve itself; it is simply being informed by a very efficient hydraulic system. Dentists call this dentin hypersensitivity, and Cleveland Clinic lists exposed dentin from gum recession or enamel wear as its most common cause.

Dentin is softer than enamel and about 70 percent mineral. Once decay breaks through enamel and reaches dentin, it tends to spread faster and wider, because the material dissolves more readily and the tubules offer bacteria a ready-made path inward. This is the reason a cavity that looks like a pinprick on the surface can be much larger on an X-ray: the enamel opening is small, but the dentin beneath has been hollowed.

The good news is that dentin is not entirely passive. It is alive at its inner edge, and that edge can respond.

Can tooth dentin be repaired?

Yes, within limits, and by a mechanism that works very differently from enamel remineralization. Dentin repair comes from the inside, driven by the pulp.

Along the border between dentin and pulp sits a layer of cells called odontoblasts. These cells made the original dentin during tooth development and never fully retire. Throughout life they slowly add new dentin to the walls of the pulp chamber, which is why the pulp space gradually narrows with age and why older teeth are often less sensitive than younger ones.

When something irritates the tooth, such as slow-moving decay, wear, or a deep filling, the odontoblasts speed up in that spot and lay down what dentists call reactionary or reparative dentin. The effect is to thicken the wall between the irritant and the pulp, buying time and reducing sensitivity. This is a genuine biological repair, and it is one reason a dentist may choose a conservative approach on a deep but slowly progressing lesion, monitoring rather than intervening straight away.

The limits are important. New dentin forms only on the pulp side, never at the surface. It cannot fill a cavity from the outside, close a crack or restore a worn edge. It also depends on a healthy pulp. Once the pulp is severely inflamed or has died, the repair mechanism stops.

Exposed dentin on the surface can be managed, though not regrown. Fluoride, and toothpastes designed for sensitivity, aim to block or narrow tubule openings so fluid moves less. Dentists can also seal exposed areas with bonding materials or varnishes. Whether any of these is appropriate, and in what order, is a judgment for the treating dentist based on how much dentin is exposed and why. The underlying cause, whether gum recession, grinding or erosion, usually needs attention too, or the exposure simply returns.

What does the tooth pulp do, and what happens when it is inflamed?

The pulp is the only part of a tooth that is unambiguously alive in the everyday sense. It contains blood vessels that bring oxygen and nutrients, nerves that report pain and temperature, immune cells that fight infection, and the odontoblasts that maintain dentin. All of this fits in a chamber often no larger than a grain of rice, connected to the rest of the body through a pinhole opening at the tip of each root.

That tiny opening is the pulp’s great weakness. When tissue anywhere else in the body becomes inflamed, it swells. The pulp cannot swell, because it is boxed in by rigid dentin on all sides. Rising pressure compresses the blood vessels that supply it, which can starve the very tissue that is trying to heal. This is why pulp inflammation, called pulpitis, can be so painful and why it can tip from recoverable to irreversible.

Dentists broadly divide pulpitis into two states. In reversible pulpitis, the pulp is irritated, usually by decay approaching but not yet reaching it, and pain tends to be sharp, brief and triggered by cold or sweet. Remove the cause, often with a filling, and the pulp typically settles. In irreversible pulpitis, the inflammation has gone too far to recover. Pain may become spontaneous, lingering, throbbing, or worse when lying down; heat may make it worse rather than cold. At that stage the pulp is unlikely to survive, and the treating dentist will usually discuss root canal treatment or extraction, according to Cleveland Clinic’s root canal overview.

Once a pulp dies, the pain sometimes stops for a while, which can be dangerously reassuring. Bacteria continue to multiply in the dead tissue and can spread through the root tip into the bone, forming an abscess. The NHS lists a dental abscess among the complications of untreated tooth decay and notes it may need urgent care.

How long until tooth pulp dies?

There is no reliable clock, and anyone who offers a precise number is guessing. The honest answer is that it depends on the cause, the speed of the insult and the individual tooth, and the mainstream sources used in this article do not give a fixed timeline.

Decay is usually slow. The NIDCR describes tooth decay as developing over time rather than overnight, and cavities commonly take many months to progress from enamel into dentin and onward toward the pulp. During that stretch the pulp is often protected by the reparative dentin described earlier. A tooth can sit with a moderate cavity for a long time before the pulp becomes seriously involved, which is why routine checkups aim to catch decay well before that stage.

Trauma is different. A hard knock can sever the blood supply at the root tip in an instant even when the tooth looks intact. Some traumatized teeth recover their circulation; others lose vitality over weeks or months, sometimes discoloring to a gray tone as the pulp breaks down. Dentists typically monitor an injured tooth with periodic tests rather than assuming an outcome.

Deep restorations, cracks and repeated large temperature swings can also stress the pulp, with a highly variable course.

What the evidence does support is the practical point: pain that changes character deserves attention. A shift from brief cold sensitivity to lingering or spontaneous ache, pain that wakes a person at night, or a tooth that has stopped hurting after weeks of discomfort all suggest the pulp’s status is changing. Only a clinical examination, sometimes with cold testing and an X-ray, can establish whether the pulp is still alive. That assessment, and any decision that follows from it, belongs with the treating dentist.

Who is usually offered treatment for each layer, and who is asked to wait?

Because each layer fails differently, dentists match the intervention to the depth of the problem rather than to how a tooth looks or feels alone. The general pattern below reflects mainstream guidance, though every decision depends on the individual tooth and the dentist’s examination.

Enamel-only changes, such as white spots without cavitation, are often monitored. The person is usually asked to wait while improving plaque control, reducing sugar frequency and using fluoride toothpaste. Professionally applied fluoride varnish or sealants may be offered, particularly for children and for adults at higher risk. Mayo Clinic notes that early-stage decay can sometimes be reversed with fluoride treatment, though this depends on the lesion remaining intact.

Once enamel has broken and decay has reached dentin, the damage cannot reverse, so a filling is usually recommended to remove softened tissue and seal the tooth. Waiting here generally carries more risk than benefit, because dentin decay progresses faster. Larger losses may need an onlay or crown to restore biting strength.

When the pulp is involved, the choice narrows to root canal treatment, which removes the inflamed or dead pulp and seals the canals so the tooth can remain in place, or extraction. Cleveland Clinic describes root canal treatment as appropriate when the pulp is irreversibly inflamed or infected. Some teeth are not good candidates, for example when a crack runs deep into the root or when too little tooth remains to support a restoration, and extraction with or without a replacement is discussed instead.

Some people are asked to pause for medical reasons. Uncontrolled bleeding disorders, certain medications, recent cardiac events or active pregnancy considerations can shift timing, and the dentist may coordinate with the person’s physician. None of this changes the anatomy; it changes when and how it is treated.

What the following days or weeks usually look like after treating each layer

Recovery tracks the depth of the work. Shallower layers, quicker settling; deeper layers, a longer and more variable course.

After remineralization advice or fluoride varnish, there is no recovery to speak of. The tooth feels the same. Progress is judged at the next examination, often several months later, by whether the white spot has stabilized or hardened.

After a filling, sensitivity to cold or biting is common for a few days and sometimes a couple of weeks, especially if the filling was deep and close to the pulp. The pulp has been disturbed and needs time to settle. Cleveland Clinic notes that mild sensitivity after a filling is normal and usually fades. A filling that feels too high when biting, or pain that intensifies rather than eases over the first weeks, is worth reporting, because a small adjustment or a closer look may be needed.

After root canal treatment, the tooth itself no longer has a pulp to feel temperature, but the tissues around the root do. Soreness on biting for a few days is typical, according to Cleveland Clinic’s root canal overview, and eases as the surrounding ligament recovers. A permanent restoration, often a crown, is usually placed within weeks to protect the treated tooth, which becomes more brittle without its pulp. The treating dentist sets that timeline.

After an extraction, initial healing of the socket takes about a week or two, with bone filling in over months. Avoiding smoking, vigorous rinsing and straws in the first days protects the clot that starts the process.

Across all of these, the everyday advice converges: keep brushing gently around the area, follow any specific instructions given, and treat worsening rather than improving symptoms as a reason to call rather than wait.

What people often get wrong about tooth structure, enamel, dentin and pulp

“If it doesn’t hurt, it’s fine.” Enamel has no nerves, so decay confined to enamel is painless. Even dentin decay may cause only occasional twinges. By the time a tooth aches on its own, the pulp is usually involved. Silence is not evidence of health; it is often evidence that the problem has not yet reached the layer that feels.

“Enamel can regrow with the right toothpaste.” Early mineral loss can be reversed; lost enamel cannot be rebuilt. No product creates new enamel. The NIDCR’s guidance on fluoride describes reversal of early decay, not regeneration of structure.

“Yellow teeth are dirty teeth.” Dentin is naturally yellow, and enamel is translucent. As enamel thins with age or wear, more dentin color shows through. Aggressive brushing to whiten such teeth removes more enamel and makes the problem worse.

“Brush right after eating.” After acidic food or drink, enamel is temporarily softened. The NHS advises waiting before brushing so the surface can re-harden, and brushing before breakfast rather than straight after.

“A root canal removes the tooth’s nerve, so it’s a dead tooth that will fall out.” The pulp is removed, but the tooth stays anchored by its ligament and bone, and it continues to function. It does lose some internal moisture and becomes more brittle, which is why a crown is often recommended.

“Baby teeth don’t matter because they fall out.” Primary teeth have thinner enamel and larger pulps relative to their size, so decay reaches the pulp faster. Infection can affect the developing permanent tooth beneath.

“A tooth that stopped hurting healed itself.” Sometimes it did, if the irritation was mild. Often the pulp has died and the nerve endings with it, while infection continues quietly. Only an examination can tell the two apart.

Questions to ask your care team about your tooth's layers

A dental appointment moves quickly, and the vocabulary can feel technical. Asking a few layer-specific questions turns a vague “you have a cavity” into a clear picture of where the problem sits and what the options are.

• Which layer has the problem reached: enamel only, into dentin, or near or into the pulp? How do you know?
• Is this lesion still intact enough to remineralize, or has the surface already broken? If we monitor it, what exactly are we watching for and when will we recheck?
• How close to the pulp will the restoration be? What kind of sensitivity should I expect afterward, and for roughly how long?
• If the pulp is inflamed, do you think it is reversible or irreversible, and what tests led you to that view?
• What are the alternatives to the treatment you are recommending, including doing nothing for now, and what are the trade-offs of each?
• Is anything about my medical history or medications relevant to timing or to healing?
• What is causing the damage in the first place: sugar frequency, acid erosion, grinding, gum recession, dry mouth? What can I change to protect the other teeth?
• If this tooth is treated with a root canal, what restoration will it need afterward and when?
• What signs should prompt me to call before my next scheduled visit?

Write the answers down or ask for them in the visit summary. Terms such as “reactionary dentin,” “reversible pulpitis” or “cavitated lesion” are easier to look up later if they are on paper. If a recommendation is not clear, asking the dentist to sketch the tooth and mark the depth of the problem is a reasonable request; most are glad to do it, and the drawing often explains more than the words.

When to call your doctor or dentist

Most changes in a tooth can wait for a routine appointment. Some cannot. The signs below suggest that the pulp or the tissues around the root may be involved, or that infection is spreading, and they warrant a prompt call rather than watchful waiting.

• Toothache that lingers for more than a few seconds after hot or cold, comes on without a trigger, throbs, or wakes you at night.
• Swelling of the gum, face, jaw or neck, or a tender lump on the gum near a tooth. Facial swelling that is spreading, or swelling that makes it hard to open the mouth, is urgent.
• Fever alongside tooth pain, a foul taste, or pus draining from the gum. The NHS notes that a dental abscess can cause these features and may need urgent treatment.
• Difficulty swallowing or breathing with dental pain or swelling. This is an emergency; seek immediate care.
• A tooth knocked loose or out, or a fracture that exposes pink or bleeding tissue in the center of the tooth. For a permanent tooth that has been knocked out, prompt dental attention within the first hour offers the best chance of saving it, according to Mayo Clinic first aid guidance.
• Pain that worsens rather than improves in the days after a filling, root canal or extraction, or bleeding that does not settle.
• A tooth that has turned gray or dark after an injury, even without pain.

People with diabetes, weakened immune systems, heart valve disease or a history of infective endocarditis should have a lower threshold for calling, since dental infections can carry higher risks in these groups. When in doubt, a phone call to the dental practice is a reasonable first step; describing the pattern of pain and any swelling helps the team decide how quickly you need to be seen. Every treatment decision that follows rests with the examining clinician.

Frequently asked questions

What are the layers of a tooth from outside to inside?

From outside in, the crown has enamel, then dentin, then the pulp at the center. Below the gum, the root is covered by cementum rather than enamel, with dentin beneath and the root canal portion of the pulp inside. A periodontal ligament connects the cementum to the jawbone. Enamel is hard and non-living, dentin is bone-like and sensitive, and the pulp holds nerves and blood vessels.

How does tooth enamel get damaged over time?

Enamel is damaged mainly by acid, friction and force. Bacterial acid from plaque feeding on sugars dissolves mineral gradually; dietary acids from citrus, soda and vinegar, or stomach acid from reflux, erode it directly. Hard brushing and nighttime grinding wear it mechanically, and biting hard objects chips it. Dry mouth accelerates all of these because saliva normally redeposits lost mineral.

Can tooth dentin be repaired once it is exposed or decayed?

Partly. Living cells at the pulp border can lay down new dentin on the inside of the tooth in response to slow irritation, thickening the barrier that protects the pulp. Dentin cannot regrow at the surface, so an exposed or decayed area still needs sealing, desensitizing or filling by a dentist. This internal repair also stops once the pulp is severely inflamed or dead.

How long until tooth pulp dies from a cavity?

There is no fixed timeline, and mainstream sources do not give one. Decay usually takes many months to travel through enamel and dentin, and reparative dentin often slows it further. Trauma can cut off the pulp’s blood supply instantly. Changing pain, such as lingering or spontaneous ache, or pain that suddenly stops, suggests the pulp’s status is shifting and should be assessed by a dentist.

Why does my tooth hurt with cold but I can't see a cavity?

Short, sharp pain with cold usually points to exposed dentin rather than a visible hole. Gum recession, enamel wear near the gum line or a hairline crack can uncover the tubules in dentin, and fluid movement inside them triggers the nerve. It can also be an early sign of decay between teeth that is not visible in a mirror. A dental examination, sometimes with an X-ray, can identify the cause.

Can enamel regrow or be rebuilt?

No. The cells that form enamel disappear after a tooth erupts, so lost enamel is permanent. What can happen is remineralization of an early lesion: calcium and phosphate from saliva, helped by fluoride, move back into weakened but intact enamel and make it harder. Products described as enamel-repairing work within this window; they cannot fill a chip or a cavity.

What is the difference between reversible and irreversible pulpitis?

Reversible pulpitis is mild pulp inflammation, typically from decay approaching the pulp, causing brief sharp pain to cold or sweet that stops quickly when the trigger is removed. It often settles once the cause is treated. Irreversible pulpitis is inflammation too advanced to recover, with lingering, spontaneous or throbbing pain. At that stage the treating dentist usually discusses root canal treatment or extraction.

Is a tooth dead after a root canal?

The pulp is removed, so the tooth no longer senses temperature from within, but it is not dead in the sense of being lost. It remains anchored by the periodontal ligament and bone and continues to function for chewing. Without its pulp the tooth loses some internal moisture and becomes more brittle, which is why dentists usually recommend a crown or similar restoration afterward.

Why are teeth more sensitive when you are younger?

Young teeth have larger pulp chambers and wider dentin tubules, so stimuli reach the nerve more easily. Throughout life, cells at the pulp border slowly add dentin to the chamber walls, narrowing the pulp and lengthening the distance signals must travel. Older teeth are therefore often less sensitive, though enamel wear and gum recession with age can expose dentin and create new sensitivity.

Does baby tooth decay matter if the tooth will fall out anyway?

Yes. Primary teeth have thinner enamel and proportionally larger pulps, so decay reaches the pulp faster than in adult teeth. An infected baby tooth can cause pain, affect eating and sleep, and in some cases damage the permanent tooth developing beneath it. Early loss can also affect spacing. Care for baby teeth follows the same principles: fluoride toothpaste, limited sugar frequency and regular checkups.

References

• MedlinePlus: Tooth anatomy
• NHS: Tooth decay
• Cleveland Clinic: Teeth, types, function and care
• Cleveland Clinic: Root canal

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.