Bottle caries (baby bottle tooth decay) is a form of early childhood caries that affects the primary (baby) teeth of very young children. It most often begins in the cervical area – where the tooth meets the gum – and spreads quickly across the surface of the enamel.

The name “bottle caries” comes from a familiar scenario: a child falls asleep with a bottle or receives nighttime feedings of formula, milk, or sweet drinks. During sleep, saliva production decreases, allowing sugars to stay in contact with the teeth for much longer.

The term “circular caries,” on the other hand, is a clinical one. It describes the pattern of the lesion: the decay wraps around the tooth at the neck, forming a characteristic “ring.”

What Bottle Caries Looks Like in Children

In the early stages, the changes can be almost invisible, which is why parents often don’t notice anything until the condition has already progressed.

Signs of bottle caries in children:

white or chalky spots appearing on the enamel
loss of the natural shine of the teeth
gradual darkening – from yellow to brown
damage concentrated near the gumline
most often affecting the upper front teeth

A child may also experience:

sensitivity to cold or sweet foods
discomfort while eating
in later stages – pain and disrupted sleep

Early-Stage Bottle Caries

This is the demineralization stage, when the tooth’s structure hasn’t yet broken down.

What it looks like:

white, chalky spots
enamel that’s lost its luster
a slightly rough surface texture

Why this stage matters:

there’s no pain, so the problem is easy to overlook
this is the only stage at which the process is fully reversible
treatment is the least invasive – no drilling required

Catching it at the dentist’s office at this point means caries can often be stopped without complex treatment.

Surface Caries: Damage to Front Teeth and Molars

Without treatment, the process moves quickly.

What happens:

the spots darken
the enamel breaks down
cavities and other carious defects appear

Front teeth:

affected first
progress rapidly
visibly change the appearance of the smile

Molars (caries on the back teeth):

affected somewhat later
tend to develop deeper cavities
can interfere with chewing

By this stage, treatment is no longer optional.

Dentists most often detect decay on the primary front teeth. That’s because these teeth erupt first and spend more time in contact with liquids during feeding, especially overnight. The enamel in this area is also thinner, so the damage develops faster. This is why the first visible changes typically show up on the front teeth – as white or darkened spots near the gums.

Bottle caries photo:

Why Bottle Caries Develops: Key Causes

Bottle caries results from a combination of factors rather than a single cause.

Main causes of bottle caries:

nighttime feedings (especially formula, milk, juice)
prolonged contact between teeth and sugary liquids
inconsistent or insufficient oral hygiene
skipping tooth-brushing after feedings
individual differences in saliva composition (reduced protective effect)
an active cariogenic (decay-causing) microflora

Additional contributing factors:

frequent snacking
sugary drinks throughout the day
lack of regular dental checkups

It’s worth noting: this isn’t something parents should blame themselves for. In most cases, parents simply aren’t aware of the risks. The good news is that these factors can be corrected.

Stages of Bottle Caries

Bottle caries develops gradually – from barely noticeable changes to deep damage to the tooth. Each stage means more complex treatment and a greater risk to dental health.

Early Stage (White Spot Lesion)

At this point, the enamel is demineralizing, but the tooth’s structure is still intact.

What it looks like:

white, chalky, or matte spots
loss of the enamel’s natural shine
a slightly rough surface

Key features:

no pain
the child usually doesn’t complain
easy to miss without a dental exam

This is the only stage at which the process can be fully stopped without drilling – through remineralization.

Surface Stage

The damage spreads within the enamel itself.

What happens:

the enamel starts to break down
small defects appear
the spots darken (turning yellow or light brown)

Symptoms:

mild sensitivity may develop
discomfort when eating sweet or cold foods

Once caries reaches this surface stage, treatment becomes necessary – though it’s still relatively straightforward.

Moderate Stage

The decay reaches the dentin – the tissue beneath the enamel.

Signs:

cavities form
the tooth darkens noticeably
the damage becomes visibly apparent

Symptoms:

sensitivity to temperature and food
intermittent discomfort
the child may avoid chewing on the affected side

Treatment at this stage involves removing the damaged tissue and filling the cavity.

Deep Stage

The decay reaches the deeper layers of dentin and approaches the pulp (the tooth’s nerve).

What happens:

significant destruction of the tooth
possible inflammation of the pulp
high risk of infectious complications

Symptoms:

pain, especially at night or while eating
sharp reactions to cold or hot temperatures
possible disruption to sleep and appetite

At this stage, treatment becomes more involved – beyond a filling, the tooth may need more significant intervention or restoration with a crown.

Why it’s important not to delay treatment: with each progressing stage, the decay goes deeper, and treatment requires more intervention. This is harder and less comfortable for the child, raising the risk of pain, inflammation, and complications. A neglected process can also affect the development of the permanent teeth underneath. The sooner the problem is caught, the easier and faster it is to resolve.

How Bottle Caries Is Treated in Children

Treatment depends on the stage of the disease, the child’s age, and the extent of the damage. The earlier the decay is caught, the simpler and less invasive the treatment.

In the Early Stages (White Spot Lesion)

When the enamel hasn’t broken down yet, the main goal is to restore its structure and halt the process.

Approaches used:

remineralization (replenishing the enamel with calcium and phosphates)
fluoride treatment to strengthen the enamel
professional cleaning to remove plaque
personalized recommendations for oral care and diet

At this stage, drilling can often be avoided entirely.

Children’s Cavity Treatment

When Cavities Are Present (Surface and Moderate Caries)

Once the enamel has already been damaged, active treatment is needed.

What the dentist does:

removes the decayed tissue
cleans out the cavity
restores the tooth with filling material

Important considerations:

materials used are specifically suited for children’s teeth
treatment is carried out as gently as possible
the dentist accounts for the child’s behavior and adapts the approach to keep them comfortable

When the Tooth Is Significantly Damaged

If the tooth has sustained major damage, a standard filling may not be enough.

In these cases, dentists may use:

pediatric crowns to restore the tooth
protective structures to preserve the tooth’s function
in some cases, comprehensive treatment (especially when multiple teeth are affected)

This approach helps to:

preserve the tooth until it naturally falls out
restore normal chewing and speech
prevent premature tooth loss

Additional Approaches

In some cases:

treatment is carried out in stages
adaptation visits are used to help the child get comfortable
medication support or treatment under sedation may be used when indicated

The treatment method is always selected individually, based on the child’s age, the number and depth of the lesions, the overall condition of the teeth, and the child’s psychological readiness for treatment. The earlier therapy begins, the easier it is, and the greater the chances of keeping the baby teeth healthy until they naturally fall out.

When to See a Pediatric Dentist Urgently

Don’t wait for things to get worse.

See a dentist if:

the child complains of pain
the child refuses to eat
the teeth are darkening quickly
cavities are visible
sensitivity appears
there’s an unpleasant odor from the mouth

Schedule a consultation to stop the process at an early stage and avoid more complex treatment down the line.

Pediatric Dentistry

Preventing Bottle Caries

Key rules for stopping caries before it starts:

begin oral care as soon as the first tooth appears
brush teeth twice a day
don’t let the child fall asleep with a bottle at night
limit sugary drinks
establish a clear feeding schedule
visit the dentist regularly

Even simple habits can significantly reduce the risk of developing caries.

FAQ

What is bottle caries in children?

Bottle caries is an early form of tooth decay that affects children’s primary (baby) teeth, caused by frequent and prolonged contact with sugary liquids — most often during nighttime feedings.

What does early-stage bottle caries look like?

Early-stage bottle caries appears as white, chalky spots on the tooth enamel, without any pain or deep structural damage to the tooth.

What’s the difference between bottle caries and circular caries?

Bottle caries and circular caries refer to the same condition: “bottle caries” is the everyday, descriptive name based on its common cause, while “circular caries” is the clinical term that describes the ring-shaped pattern of decay around the tooth.

Can bottle caries affect the molars?

Bottle caries can affect the molars, though this usually happens later in the disease’s progression — the front teeth are typically affected first, and decay then spreads to the back teeth over time.

The author of this article is Nataliya Shmarchuk, a pediatric dentist, orthodontist, and general dentist.