Published October 18, 2026
If you are looking for a Lowell pediatric dentist, our main overview explains first visits, exams and how to compare practices.
Baby teeth support growth and everyday comfort
Baby teeth help children chew, speak clearly and smile with confidence. They also hold space for permanent teeth. When a baby tooth is lost early to decay, neighboring teeth can drift and crowd the space.
Tooth decay in young children, called early childhood caries, is one of the most common chronic conditions of childhood according to the CDC. It is also largely preventable.
What causes cavities in young children
Cavities form when bacteria in plaque feed on sugars and produce acid that weakens enamel. Common contributors include:
- Frequent sipping of milk, juice or sweetened drinks, especially from a bottle or sippy cup through the day or at bedtime
- Frequent snacking on sticky or sugary foods
- Brushing that is skipped or done without fluoride toothpaste
- Bacteria passed from caregivers through shared spoons or cleaning a pacifier by mouth
Early warning signs
The first sign is often a dull, chalky white line along the gumline of the upper front teeth. Later, spots may turn yellow, brown or black. Children may avoid chewing on one side, complain about cold or sweet foods, or have bad breath. Many cavities cause no pain at first, which is why regular checkups matter.
How dentists treat cavities in baby teeth
Treatment depends on the size of the cavity, the child’s age and how cooperative they can be. Options a dentist may discuss include fluoride varnish or silver diamine fluoride to slow very early decay, fillings, crowns for larger cavities, and in some cases extraction. For young or very anxious children, a dentist may discuss behavior guidance or sedation options. Ask about benefits, risks and alternatives for each.
Habits that help at home
Prevention works best as a daily routine:
- Brush twice daily with fluoride toothpaste, and help with brushing until kids can do it well, often around age 7 or 8
- Offer water between meals and keep juice limited
- Avoid putting a child to bed with a bottle of milk or juice
- Keep regular checkups so problems are found early
Questions parents ask
Why fix a baby tooth that will fall out?
Untreated decay can cause pain, infection and early tooth loss, and some baby molars stay until age 10 to 12. A dentist can explain whether treatment is recommended for a specific tooth.
Are cavities contagious?
The bacteria involved can be passed between people, for example through shared utensils. Caregivers keeping their own teeth healthy helps.
Is juice bad for kids’ teeth?
Juice contains natural sugars. Frequent sipping is the bigger concern. Water and milk at meals are better choices for teeth.
What is silver diamine fluoride?
It is a liquid that can help stop some cavities from growing. It permanently darkens the decayed area. A dentist can explain whether it suits your child.
My child has a toothache. What should I do?
Contact a dentist promptly. If there is facial swelling that affects breathing or swallowing, or a high fever with swelling, call 911 or go to the ER.
Official sources for further reading
Written independently for this site. These organizations publish their own guidance; they did not review or endorse this page.