White Spots on Teeth: Causes and How to Get Rid of Them
White spots on teeth are areas where the enamel has lost minerals or formed differently, most often from early demineralization (the first stage of tooth decay), fluorosis or braces. Many can be reversed or treated without drilling, especially when they are caught early.
The right approach depends on the cause, so a dental exam is the best first step. Below, our office explains what white spots mean, what causes them, whether a white spot is a cavity, and the most conservative ways to get rid of them.
What Do White Spots on Teeth Mean?
Healthy enamel is smooth and slightly translucent. When one area holds less mineral than the rest, light passes through it differently. That area looks chalky, opaque or bright white next to the tooth around it.
White spots on teeth fall into two main groups:
Spots from mineral loss. These form after a tooth has come in. Acids pull minerals out of the enamel surface, a process called demineralization.
Spots from how the enamel formed. These develop in childhood, while teeth are still growing under the gums. Fluorosis and enamel hypoplasia are the two most common examples.
The difference matters. Spots from mineral loss can often be stopped or reversed. Developmental spots are usually stable, but they will not fade with brushing alone.
What Causes White Spots on Teeth?
White spots have several possible causes, and some people have more than one. These are the most common, in line with guidance on tooth discoloration from Cleveland Clinic.
Demineralization (Early Tooth Decay)
Plaque bacteria feed on sugars and produce acids. Those acids pull calcium and phosphate out of the enamel. The weakened area turns chalky white, often near the gum line where plaque collects. This is the earliest stage of a cavity, and it is still reversible. With fluoride and better plaque control, the enamel can take minerals back in.
Dental Fluorosis
Fluorosis happens when a child takes in too much fluoride while the teeth are still forming, roughly the first 8 years of life. Common sources include swallowing toothpaste, fluoride supplements that are not needed, and naturally high fluoride levels in well water. It usually shows up as faint white streaks or flecks. Mild fluorosis is cosmetic only and does not harm the tooth. The CDC links it to young children swallowing too much fluoride toothpaste.
Enamel Hypoplasia
Enamel hypoplasia means the enamel did not form fully, so it is thinner or less developed in spots. Causes include genetics, illness or high fever in early childhood, nutritional deficiencies, premature birth and certain medications during development. These spots can be more sensitive and more prone to decay, so we keep a close eye on them.
White Spots After Braces
Brackets and wires make it harder to clean the teeth. Plaque collects around each bracket and slowly demineralizes the enamel underneath. When the braces come off, white rings or squares show where the brackets sat. If you wear braces now, brush around every bracket after meals, use a fluoride toothpaste, and keep up your cleanings. Ask your orthodontist about a fluoride rinse or varnish.
Acidic and Sugary Foods and Drinks
Soda, sports drinks, energy drinks and citrus are acidic. Frequent snacking keeps the mouth acidic for longer. Acid reflux can bring stomach acid into the mouth as well. Each acid exposure softens enamel and speeds up mineral loss.
Dry Mouth and Mouth Breathing
Saliva rinses away acids and helps return minerals to the enamel. Dry mouth from medications or certain health conditions removes that protection. Mouth breathing during sleep also dries the teeth, which can make them look chalky in the morning until they rehydrate.
Temporary Spots After Teeth Whitening
Whitening can briefly dehydrate the enamel. This can make existing white spots stand out more for a day or two. In most cases, they fade as the tooth rehydrates.
Is a White Spot on a Tooth a Cavity?
Not yet, but it can be the start of one. A white spot from demineralization is an early lesion, sometimes called a pre-cavity. The enamel has lost minerals, but there is no hole. At this stage, it can often be reversed. Our post answering the question can a cavity heal itself explains how this works.
Signs that a white spot on a tooth is progressing include:
The spot turns brown, gray or darker
It feels rough or sticky to the tongue
The tooth becomes sensitive to cold, sweets or pressure
A small hole or pit appears
White spots from fluorosis or hypoplasia are not cavities. They do not turn into decay on their own, although hypoplastic enamel needs extra care.
How to Get Rid of White Spots on Teeth
The right treatment depends on what caused the spot and how deep it goes. In our office, we always start with the least invasive option that can work, and we avoid drilling healthy enamel wherever possible.
Remineralization Treatment
Remineralization helps early lesions take minerals back into the enamel. We may use a professional fluoride varnish, a prescription-strength fluoride toothpaste, or calcium phosphate products that supply the building blocks of enamel. It works best on recent demineralization, such as new spots near the gum line. Results build over several weeks to months, with check-ins to track progress. Learn more about enamel remineralization.
Resin Infiltration
Resin infiltration is a no-drill treatment. A gentle gel opens the surface of the spot, then a clear, tooth-colored resin flows into the porous enamel and hardens. Light now passes through the area like healthy enamel, so the spot blends in. It is often known by the brand name ICON. It works well for white spots after braces and mild fluorosis, and it is usually done in a single visit.
Microabrasion
Microabrasion removes a very thin layer of surface enamel using a mild abrasive and acid paste. It is best for shallow spots and mild fluorosis that sit near the surface. The treatment is usually completed in one visit and is often paired with whitening for a more even result.
Professional Teeth Whitening
Professional teeth whitening brightens the enamel around the spots so the color difference is less noticeable. Spots can look brighter for a short time right after whitening, as the enamel dehydrates. For that reason, we often combine whitening with resin infiltration or microabrasion.
Dental Bonding
For deeper spots or areas of enamel hypoplasia, we can place a thin layer of tooth-colored composite over the area. Very little or no enamel needs to be removed. The composite is shaped and polished to match your natural tooth, usually in one visit. Learn more about tooth bonding.
Veneers for Severe or Widespread Spots
When spots are deep, widespread and do not respond to other treatments, porcelain veneers can cover the front of the teeth. Veneers are rarely our first choice for white spots. We recommend them only after more conservative options have been considered, and we design them to preserve as much natural tooth as possible.
Can You Get Rid of White Spots on Teeth at Home?
Partly. If a spot comes from early demineralization, home care can help stop it and may help it fade. Brush twice a day with fluoride toothpaste, floss daily, and cut back on sugary and acidic drinks.
Home care cannot remove fluorosis or enamel hypoplasia, because those spots formed as the tooth developed.
Be careful with DIY remedies you may see online:
Lemon juice and vinegar are acidic and dissolve enamel.
Baking soda scrubs can wear down the surface when used often or with force.
Charcoal powders are abrasive and can scratch enamel.
These can thin the enamel and make white spots look worse over time.
White Spots on Children's Teeth
White spots on kids' teeth usually come from one of two things: too much fluoride while teeth are forming, or early decay.
To lower the risk of fluorosis, the American Dental Association recommends:
Under age 3: a smear of fluoride toothpaste the size of a grain of rice
Ages 3 to 6: a pea-sized amount
Supervise brushing and teach your child to spit, not swallow. Fluoride still matters for strong teeth, as we explain in our post on the benefits of fluoride.
Chalky white spots near the gum line on a toddler's teeth can be an early sign of decay, often linked to bottles or frequent sipping. Book a dental visit by your child's first birthday, and sooner if you notice spots.
How to Prevent White Spots on Teeth
Most white spots from mineral loss can be prevented with a few daily habits:
Brush twice a day with fluoride toothpaste.
Floss once a day.
Take extra care around braces, cleaning every bracket after meals.
Limit soda, sports drinks and other sugary or acidic drinks.
Drink water, especially after meals and snacks.
Address dry mouth with your dentist or doctor.
Keep regular checkups and cleanings, so early spots are caught while they are easy to reverse.
When to See a Dentist About White Spots
Schedule a visit if a white spot:
Is new or getting bigger
Changes color to brown, gray or yellow
Feels rough or sticky
Becomes sensitive to cold, sweets or biting
Appears on a young child's teeth
Early lesions are the easiest to reverse, often without any drilling. A quick exam tells us what caused the spot and which option fits.
White Spot Treatment in NYC at Lazare Biomimetic Dentistry & Smile Design
At our Upper East Side office on East 61st Street, Dr. Marc Lazare treats white spots with the most conservative option first. Depending on the cause, that may mean remineralization, resin infiltration, microabrasion or bonding, always with the goal of preserving your natural enamel. If you have noticed white spots on your teeth, or your child's, we invite you to book a consultation. We will explain what we see and walk you through your options.
White Spots on Teeth: FAQs
Do white spots on teeth go away on their own?
Some do. Spots from whitening or mouth breathing usually fade within hours to a couple of days as the tooth rehydrates. Early demineralization can improve with fluoride and better hygiene. Spots from fluorosis or enamel hypoplasia do not go away on their own.
Does teeth whitening remove white spots?
Not on its own. Whitening brightens the surrounding enamel so spots may blend in, but it can make them look more noticeable at first. It works best combined with resin infiltration or microabrasion.
Are white spots after braces permanent?
Not always. Some fade in the months after braces come off, as saliva and fluoride help the enamel remineralize. Spots that remain can often be treated with resin infiltration or microabrasion, without drilling.
Why do I have white spots on my teeth when I wake up?
Usually because your teeth dried out overnight, often from mouth breathing. Dehydrated enamel looks chalky. The spots typically fade once saliva rehydrates the teeth. If they stay visible all day, have them checked.
Can a vitamin deficiency cause white spots on teeth?
It can play a role in childhood. Low levels of nutrients such as vitamin D or calcium while teeth are forming can lead to enamel hypoplasia. In adults, white spots are much more likely to come from demineralization.
Are white spots on teeth contagious or harmful?
White spots are not contagious. Fluorosis spots are cosmetic and harmless. Spots from demineralization, however, are an early warning sign of decay, so they are worth having checked by a dentist.
