7 Causes Of Tooth Discoloration In Babies & Ways To Treat It

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Discoloration of teeth in babies and toddlers can be worrisome for parents. However, it is a common problem and can be cured if identified early. The teeth may become off-white, gray, yellow, or brown for various reasons. For example, oral hygiene, certain medications, or physical conditions can cause teeth discoloration, and resolving the underlying causes may revert the color changes in some babies.

Read on to learn more about the causes, prevention, and treatment of teeth discoloration in babies and toddlers.

What Causes Tooth Discoloration In Babies And Toddlers?

The reasons might be congenital, medical, or lifestyle-induced. The following are some of the possible reasons for discoloration and staining of teeth.

  1. Improper brushing: Improper brushing is one of the primary reasons for several dental problems. It leads to plaque accumulation and cavity formation. It also increases the bacterial count in the oral cavity, which might lead to dental staining (1).
  1. Sugary juices: Consumption of excessive sugar increases the chances of tooth decay. Decayed teeth can develop gray or black discoloration. Dipping pacifiers in sugary syrup or honey also increases the microbial count, thus increasing the likelihood of teeth discoloration (2).
Did you know?
All sugars are not sweet. Starchy foods, such as chips and crackers, contain sugar and are not good for your child’s dental health (18).
  1. Medicines: Certain drugs can cause discoloration of teeth. Some drugs, such as tetracycline, may have the risk of discoloring the baby’s teeth if the mother has them during pregnancy. Tetracycline was observed to cause brownish discoloration of the baby’s teeth even when the little one was not administered the drug (3). Babies who take iron supplements also exhibit blackish discoloration on teeth (4). Glibenclamide (Glyburide) medicine that is used for the treatment of permanent neonatal diabetes mellitus may also cause brown spots on teeth (5).
  1. Trauma: An injury or a fall can damage the nerves and the blood supply to a tooth. It makes the tooth non-vital. Over time, the tooth may start changing color from red to brown (6).
  1. Developmental defects: Congenital teeth defects can cause discoloration of teeth. Inherited condition amelogenesis imperfecta, also known as enamel hypoplasia, is one such condition (7). It is characterized by pits, fissures, deep grooves, and yellow or brown spots on the surface of the teeth.
  1. Dietary reasons: Food with dense colors like raspberries, blackberries, blueberries, beetroot, grapes, etc., might cause discoloration of teeth due to high levels of pigmentation (8).

    Foods like blackberries can cause tooth discoloration in babies

    Image: iStock

  1. Jaundice: Jaundice causes increased bilirubin concentration in the blood. This condition is called hyperbilirubinemia, which can cause an accumulation of bilirubin in the various tissues of the body. When bilirubin levels are elevated for several weeks, it may deposit on the teeth leading to green color. This kind of discoloration is often permanent as it causes permanent changes in the color of the enamel and dentin of the teeth (9).

What Are The Symptoms Of Tooth Discoloration And Staining?

The stains can be broadly categorized into two types:

  • Extrinsic stains: The stains appear due to the action of external factors such as food, drinks, medicines, bacteria, etc. It is relatively easy to get rid of these stains. They affect the tooth’s top layer, which is called the enamel.

    The stains appear due to the action of external factors such as food, drinks

    Image: iStock

  • Intrinsic stains: They occur when the staining is beyond the enamel, in the deeper layers of a tooth. This discoloration can happen due to multiple reasons, including infection and congenital stain. These stains are difficult to remove.

Based on the relevant evidence, it is said that tooth discoloration can be found in nine different color spectrums: black, brown, blue, green, grey, orange, pink, red, and yellow. Each color might represent a different cause (10).

Colors of stain

Several predisposing factors could cause discoloration of the teeth. Each stain color could be a result of individual factors or conditions.

  1. Yellow or orange color stains: This kind of stain usually appears when the plaque that is lining the gums absorbs color from the food or drinks that the baby is consuming. Proper brushing can get rid of them. Avoid giving food and drinks with a lot of added food colors. If you can’t manage the stains by yourself, seek the advice of a dentist.
  1. Black stains or dark stains: These are the most commonly seen stains in babies (11). If your baby takes iron supplements, then they might likely develop black stains. Black stains might also appear due to necrosis of tooth’s pulp, in the case of a fall or an injury. Check with your baby’s dentist if they can scrub up and remove the stains.
  1. White stains or mottled brown patches: Such discoloration might be a sign of fluorosis (12). It might happen if the toddler is using high quantity of fluoridated toothpaste or ingesting fluoridated toothpaste. It may even occur when drinking water has too much fluoride. Use toothpaste with low fluoride concentration for your baby until he/she learns to spit and not swallow. You may consider alternative water sources if the drinking water in your area has high levels of fluoride.
Experts say
The American Dental Association states that you can safely mix infant formula with fluoridated water (18).

If the teeth discoloration is due to a certain food that the baby or toddler ate (like beetroot or berries), then it will be temporary. However, if the discoloration seems deep and you suspect a problem, then see a dentist.

Treatment For Tooth Discoloration

The over-the-counter teeth bleaching agents are not suitable for babies and toddlers. The decision to create a treatment plan should be left to the dentist, who can use a combination of treatment methods (13).

  • For teeth with minor yellow stains, your dentist may suggest you brush your toddler’s teeth with adult toothpaste.

    Brush your toddler’s teeth with adult toothpaste for minor yellow stains

    Image: Shutterstock

  • Adding baking soda to the toothpaste may help reduce the stains.
  • In some cases of extrinsic stains, the dentist may recommend professional cleaning and polishing of teeth.
  • In some cases, when the teeth are discolored to the point of being aesthetically unpleasant, then the dentist may consider using medically-approved bleach.
  • When the teeth are broken or appear crooked due to the damage caused by cavities, fluorosis, or weak enamel, your dentist might recommend putting tooth-colored crowns for your toddler.
  • In some cases, the dentist might do microabrasion on the surface of teeth to get rid of the stains. Microabrasion is the removal of the top layer of teeth by a few millimeters.
  • The dentist may use a pumice mixture to remove the stains on the surface of teeth for your toddlers.

Removal of stains and discoloration should only be done by a dentist.

How To Prevent Discoloration Of Teeth?

Discoloration of teeth in babies and toddlers can be avoided by following some good practices. Try and include these changes in your baby and toddler’s daily routine (14) (15).

  • Brush your baby or toddler’s teeth twice a day. Older toddlers can be encouraged to brush their teeth themselves under the supervision of a parent. Speak to your dentist to learn the correct techniques of cleaning your baby’s teeth.
  • Clean the gums and mouth using a clean gauze even before the teeth erupt.
  • Do not give a baby or a toddler sugary juices and sodas. Do not use pacifiers dipped in honey or sweet liquids.
  • Dental check-ups for babies and toddlers are as important as they are for adults. Start scheduling dental check-ups with your dentist every six months as the first teeth erupt.

    Schedule dental check-ups for babies and toddlers

    Image: iStock

  • If you observe iron supplements causing staining on teeth, make a habit of cleaning up the oral cavity by wiping, brushing or rinsing immediately after giving the supplement. This will prevent the stain from setting onto the teeth.
  • Do not give milk bottles while sleeping at night. It might be the main reason for early childhood caries. The presence of milk and sugar makes the environment of the oral cavity ideal for bacterial growth.
Quick tip
After babies turn six months, gradually replace bottles with sippy cups having hard spouts. This will prevent liquid from accumulating in their mouths. By one year, they will start using cups independently (19).

Frequently Asked Questions

1. Can a discolored tooth heal completely?

The treatment of a discolored tooth depends on the underlying cause. If the discoloration is due to poor oral hygiene or extrinsic stains, it can be removed easily by brushing, cleaning, or polishing. However, if caused by other factors such as cavities and fluorosis, the discoloration cannot be cured (16).

2. How can I differentiate between a tooth discoloration and a cavity in my baby?

A cavity is brown to dark black in color and may result in an underlying hole in the tooth. Symptoms such as sensitivity, pain, or food lodgement may accompany. A stained tooth is structurally intact, and there are no associated discomforts (17).

Teeth discoloration may be seen in nine various color spectrums, including black, brown, blue, green, grey, orange, pink, red, and yellow, but it isn’t a cause for concern. So, if you see discoloration of teeth in babies and toddlers, the cause might be congenital, medical, or lifestyle-related, like improper brushing. Monitoring your baby’s or toddler’s mouth cavity regularly will keep you informed of any major or little changes. It will also help with early detection so that your child’s dentist can correct the discoloration. So, clean your baby’s teeth twice a day and avoid giving your infant sugary juices and sodas to prevent tooth discoloration.

Infographic: Choosing The Best Toddler Toothbrush And Toothpaste

While regular brushing and the brushing technique play a significant role in oral hygiene maintenance, choosing the right toothbrush and paste is half the job done. So go through this infographic to learn about the points to keep in mind while buying them to get the best results for your toddler’s teeth.

tooth discoloration in babies [infographic]
Illustration: MomJunction Design Team


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
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14. O Olatosi and EO Sote, Association Of Early Childhood Caries With Breastfeeding And Bottle Feeding In Southwestern Nigerian Children Of Preschool Age; Journal of West African College of Surgeons.
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