Children
Do cavities in baby teeth really matter?
16 August 2026 · The Dentist, Al Qusais, Dubai
The short answer
Yes, cavities in baby teeth matter just as much as decay in adult teeth. Baby teeth hold space for the permanent teeth, help with chewing and speech, and sit directly above the developing adult tooth buds, so an infection can spread and affect the tooth that hasn't even come through yet. Left untreated, a small cavity can turn into an abscess within weeks in a child, causing pain, swelling and missed school. Any hole, dark spot or complaint of pain in a child's tooth is worth a dental check, not a wait and see approach.
Why baby teeth aren't just placeholders
Baby teeth do a lot of quiet work before they fall out. The back molars in particular stay in the mouth until a child is around 10 to 12 years old, holding the correct space for the adult teeth that are still forming underneath the gum. If a baby molar is lost early to decay, the teeth next to it can drift into that gap, and the permanent tooth trying to come through ends up crowded or stuck in the wrong position. That's often where years of orthodontic work later on begins.
There's also the tooth itself sitting right above the developing permanent tooth bud. A cavity that's ignored doesn't stay small. Because baby teeth have thinner enamel and a larger nerve chamber relative to their size, decay reaches the nerve faster than it would in an adult tooth. Once bacteria get into the nerve, an infection can spread to the bone around the permanent tooth bud below it, which in some cases affects how that adult tooth eventually forms or erupts.
What actually happens if it's left
In practice, the timeline moves quicker than most parents expect. A brown spot that looked stable at one checkup can become a hole with visible pain within a few months, and in young children an abscess can develop in a matter of weeks once the nerve is involved. The signs are usually a child avoiding chewing on one side, waking at night, or a gum boil near a specific tooth. By that point the treatment options have narrowed. What might have been a simple filling now needs a pulp treatment or an extraction.
There's a broader knock-on effect too. Children in pain eat less, sleep worse, and struggle to concentrate at school. Repeated dental pain in early childhood is also strongly linked to dental anxiety later in life, because the first few experiences a child has with dentists shape how they feel about every visit after. A calm filling at age 5 is a very different experience to an emergency extraction at age 6.
What to actually do about it
If you've spotted a dark spot, a visible hole, or your child has mentioned tooth pain, get it looked at rather than monitoring it at home. A dentist can tell within a few minutes whether it's early decay that can be managed with a fluoride treatment and better brushing habits, or a cavity that needs a filling now before it reaches the nerve. Twice yearly checkups from around age one, or from the first tooth appearing, catch most of this before it becomes painful.
At The Dentist in Al Qusais, the first checkup is free for new patients, which makes it an easy first step if you're not sure whether what you're seeing needs treatment or just watching. Dr. Faris Alkhanafseh and Dr. Mohammad Nour see children as part of general family dental care, and you'll get a written explanation of what's needed and what it costs before anything is done. Book through WhatsApp or thedentist.ae/book, open Monday to Saturday, and bring your child in for a look rather than waiting for the pain to decide for you.
This article is general information, not a diagnosis. If you are in Dubai, the free first checkup at our Al Qusais clinic is the fastest way to get an answer about your own teeth.