Question
Our 8-month-old son is getting his first teeth, but the teeth have a black tint as they are coming through. Is this normal, and will the discoloration go away?
Answer
Normal baby (primary) teeth are off-white or ivory. Baby teeth can become discolored for many reasons. The most common cause is inadequate brushing, which allows bacteria (plaque) to form on the teeth. Liquid medications containing iron, such as supplemental vitamins given to infants, also can cause dark stains. Other causes of discoloration include:
- Certain antibiotics, such as tetracycline
- Jaundice in newborns, which may cause a yellow or greenish tint
- Excessive fluoride (fluorosis), which may cause bright white spots
- Injury to teeth, which may result in a pink or grayish tint
- Chronic illness or recurrent fevers
Proper dental care begins before your child's first tooth appears. Teeth actually start to form in the first trimester of pregnancy. At birth, a baby has 20 unerupted primary teeth. To prevent the buildup of bacteria in your baby's mouth, run a damp washcloth over your baby's gums after feedings. When your baby's first teeth appear — usually at 6 months — start using a soft children's toothbrush twice a day. Children should have their first dentist appointment at about age 3 years — earlier if problems occur.
Baby bottles can also create problems for your child's teeth. When liquids such as milk or juice stay in contact with the teeth for long periods, the sugars cause tooth decay. To prevent this:
- Don't put your baby to bed with a bottle, unless it contains plain water
- Don't let your child walk around with a bottle during the day
Fortunately, normal permanent teeth often grow in to replace discolored baby teeth. Even if discoloration persists in permanent teeth, a dentist may be able to remove these stains. If you have concerns about your baby's teeth, talk to your doctor. He or she may be able to refer you to a pediatric dentist.
