A change of colour on a child's tooth can be a harmless surface stain or the first sign of decay. The colour, where it sits and whether it rubs off are useful clues, and a quick look by the dentist settles it.
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Discoloured baby teeth usually have one of four causes: surface stains (for example from iron drops or staining bacteria), tooth decay, a knock that darkens a tooth, or enamel that formed weakly. Stains are harmless and can be polished off, while chalky white or brown patches and dark holes may be decay that needs treating early. At Creative Arts in Dubai we examine your child's teeth to tell which it is.
Who treats you here Dr. Duaa Ameen General Dentist · Dr. Julia General Dentist
Every dentist’s licence can be checked on the DHA Sheryan medical directory.
Use this as a guide, not a diagnosis. Several causes look alike, and the dentist confirms which it is.
| What you see | Common causes | What usually helps |
|---|---|---|
| Yellowish film near the gum | Plaque that brushing has missed | Better brushing; it comes off with a toothbrush |
| Chalky white band or patches | Early decay where minerals are being lost; sometimes weak enamel | Fluoride, diet changes and review; early decay can be stopped |
| Thin black or dark brown line along the gum edge | Stain from pigment-producing bacteria, common in children and harmless | Professional polishing; it may come back |
| Grey-black or brown stain all over | Liquid iron supplements; tea, some foods and drinks | Brushing soon after iron doses; polishing at the clinic |
| Brown or black spot that is rough, soft or sticky | Decay that has reached into the tooth | Examination; fluoride, a filling or other treatment |
| Whole tooth turning grey, pink or dark yellow | A knock to the tooth, sometimes months earlier | Examination, X-ray if needed and monitoring |
| Creamy-yellow or brown patches with rough edges | Enamel that formed weakly, such as hypomineralisation | Protection with fluoride or sealing; treatment if it breaks down |
Black spots on adult teeth have their own guide: black spot on a tooth.
Surface stains sit on the enamel, do not damage the tooth and can be removed, although some return.
Liquid iron can leave grey-black or brown stains on baby teeth. Do not stop iron your child's doctor prescribed; give it as directed, then brush or wipe the teeth afterwards and ask the doctor or pharmacist whether it can be given with a straw or syringe towards the back of the mouth.
A thin dark line along the gum edge, often on several teeth, caused by bacteria that produce pigment. It is common, not a sign of poor brushing and not decay, but it is firmly attached and needs professional polishing to remove.
Usually linked to bacteria and plaque near the gum line in children with less thorough brushing. They come off with polishing and improve with better cleaning.
Tea, some fruit juices and strongly coloured foods can stain enamel, especially where plaque is left behind.
Decay often shows as a change of colour before it becomes a hole. The US National Institute of Dental and Craniofacial Research explains that early decay may appear as a white spot where minerals have been lost, and that at this stage it can be stopped or reversed with minerals from saliva and fluoride. If more minerals are lost, the enamel breaks down into a cavity, which often looks brown or black.
In toddlers, white or brown bands near the gums on the upper front teeth are a typical pattern of baby bottle tooth decay, linked to milk or sweet drinks at night. On back teeth, decay often starts in the grooves of the biting surface or between the teeth, where parents cannot see it. Rough, soft or sticky dark spots, food catching, or sensitivity to sweet or cold all point towards decay rather than stain.
Treated early, many of these changes need only fluoride and better habits. Once a cavity has formed, a small tooth-coloured filling is usually the next step; our guide to cavities in baby teeth explains why baby teeth are worth treating.
Toddlers fall often, and a knock to a front tooth can bruise the nerve and blood supply inside it. The tooth may turn pink, grey or dark within days or weeks, sometimes long after the fall has been forgotten. Some teeth lighten again over the following months; others stay grey but cause no trouble; and some lose their nerve and become infected.
A grey tooth on its own is not an emergency, but it should be checked, and an X-ray may be taken to look at the root. Signs of infection include a pimple-like swelling on the gum above the tooth, swelling of the lip or face, pain or a loose tooth. Depending on what the dentist finds, the options range from watching the tooth to pulp treatment or removal. Our guide to a child's knocked tooth covers what to do on the day of an injury.
Parents often notice that the first adult front teeth look yellower than the baby teeth beside them. This is usually normal: adult teeth are larger and have more dentine, the naturally yellow layer under the enamel, so they look darker next to the very white baby teeth.
Patches are different. Creamy, yellow or brown areas, often on the first adult molars and front teeth, can be enamel that did not mineralise fully while it was forming, sometimes called molar-incisor hypomineralisation. Affected enamel can be sensitive and may chip or decay more easily, so it is protected early with fluoride and sometimes sealing. White flecks can also be mild fluorosis; the CDC notes that only young children can develop fluorosis, because the permanent enamel is fully formed by about age eight, and that mild fluorosis does not affect how the teeth work. A baby tooth that had a bad infection can also leave a mark on the adult tooth beneath it. Grey banding from certain antibiotics is rare today; see grey teeth from tetracycline.
Most children need only the first few rows. The examination decides.
| Option | When it fits | What it involves |
|---|---|---|
| Brushing and diet changes | Plaque, food stains and very early decay | Supervised brushing twice a day with fluoride toothpaste, and sweet foods and drinks kept to mealtimes |
| Professional cleaning and polishing | Black line, iron, green or orange stains | A gentle polish at the clinic; no drilling or injection |
| Fluoride varnish | Chalky white spots of early decay, or weak enamel | A quick painted coating; see fluoride treatment |
| Tooth-coloured filling | A brown or black cavity | Removing the decay and filling the tooth, with local anaesthetic when needed |
| Pulp treatment or removal | A darkened tooth with infection, or deep decay near the nerve | A pulp treatment or, if the tooth cannot be kept, a gentle extraction |
Whitening is not used on children's baby teeth. Treatment is always explained to you, and to your child in simple words, before anything is done.
a dark spot is rough, soft or getting bigger; your child has toothache or sensitivity to sweet or cold; a darkened tooth has a swelling or pimple on the gum, or is loose; or white or brown bands are spreading along the gum line. The clinic is open daily, 10:00–20:00, and is not a 24-hour service. Facial swelling with fever, swelling spreading towards the eye or neck, or difficulty breathing or swallowing needs a hospital emergency department straight away.
Dr. Duaa Ameen and Dr. Julia, General Dentists, examine children's teeth, remove stains, apply fluoride and place fillings when needed, always starting with a calm look and an explanation.
Clinical statements on this page are consistent with these independent sources. They describe averages from studies, not a promise for any one patient.
A thin black or dark brown line along the gum edge of several teeth is usually a stain made by pigment-producing bacteria. It is common in children, harmless and not decay, but brushing rarely removes it. It can be polished off at the clinic, although it sometimes returns. A dark spot that is rough or soft is different and should be checked.
No. Iron supplements can leave grey-black or brown stains on the surface of baby teeth, but they do not damage the enamel and can be polished off. Keep giving the iron as your child's doctor prescribed, and brush or wipe the teeth afterwards; your doctor or pharmacist can advise on how to give it.
Not always. A yellow film near the gums is often plaque, which better brushing removes. But new adult teeth naturally look more yellow than baby teeth, and yellow or brown patches with rough edges can be weak enamel. If yellowing does not brush away, ask your dentist to look.
A tooth that turns grey after a knock does not usually fall out early just because of the colour. Some lighten again, some stay grey without problems, and some become infected. Have it checked, then watch for a swelling or pimple on the gum, pain or looseness, which mean it needs treatment.
Whitening is not used on children's baby teeth. Surface stains are removed by professional polishing, decay is treated, and a darkened tooth after a knock is assessed rather than bleached. Whitening is a cosmetic treatment considered only for adults, and occasionally older teenagers, after an examination.
They can be. Chalky white spots near the gums may be early decay, which can often be stopped with fluoride and diet changes if caught in time. White flecks present since the tooth came in may be weak enamel or mild fluorosis, which are usually harmless. A dentist can tell them apart.
Common reasons are enamel that did not mineralise fully while the tooth was forming, often affecting the first adult molars and front teeth, or an infected baby tooth that marked the adult tooth beneath it. Patchy enamel can be sensitive and break down more easily, so it is worth protecting early.
Creative Arts has a single clinic on Jumeira Street (Jumeirah Beach Road). Ask about parking when you book.
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