Preserving baby teeth means two different things depending on where you are in the journey. If your child’s teeth are still in their mouth, preservation is about preventing cavities and protecting the teeth until they naturally fall out. If you’re holding a tiny tooth that just came out, preservation is about cleaning and storing it so it lasts for years. Both matter, and the steps for each are straightforward.
Why Baby Teeth Are Worth Protecting
Baby teeth do more than chew food. They hold space in the jaw for the permanent teeth growing underneath. When a baby tooth is lost too early, whether from decay or injury, the surrounding teeth can drift into the gap. That drifting leads to crowding, misalignment, and bite problems that often require orthodontic treatment later. If a child does lose a baby tooth prematurely, a dentist can place a space maintainer, a small device that keeps the gap open until the adult tooth is ready to come in.
Cavities in baby teeth are more common than most parents realize. CDC data from 2024 shows that more than 1 in 10 children aged 2 to 5 already have at least one untreated cavity in their baby teeth. By ages 6 to 8, that number climbs to nearly 1 in 5.
Preventing Cavities in Baby Teeth
Tooth decay in young children happens when teeth are frequently exposed to sugary liquids, including milk, breast milk, formula, and fruit juice. It’s not just what your child drinks but how often and how long the liquid sits on their teeth. Letting a baby fall asleep with a bottle is one of the most common causes of early childhood decay, sometimes called “bottle rot,” because the sugary liquid pools around the teeth for hours.
A few habits make a big difference:
- Skip sugary drinks between meals. If your child is thirsty between meals, offer only water in a bottle or sippy cup.
- Don’t dip pacifiers in sugar or sweetened liquids.
- Transition to a cup by the first birthday. Sippy cups and bottles that are carried around all day keep teeth bathed in liquid longer than a regular cup does.
- Start brushing with the first tooth. Use a smear or rice-grain-sized amount of 1000 ppm fluoride toothpaste from the time the first tooth appears through age 2. From ages 2 to 6, increase to a pea-sized amount. After age 6, children can use a full strip of 1450 ppm toothpaste.
Dental Sealants and Professional Care
Dental sealants are thin coatings applied to the chewing surfaces of back teeth, where 9 out of 10 cavities form. They prevent 80% of cavities over two years. Your dentist can apply sealants to baby molars if your child is at higher risk for decay.
The American Academy of Pediatric Dentistry recommends scheduling your child’s first dental visit within six months of the first tooth appearing, and no later than 12 months of age. That first visit establishes a baseline and catches problems early, long before a toddler can tell you something hurts.
How to Store a Baby Tooth as a Keepsake
Once a tooth falls out (or is pulled by a dentist), bacteria on the surface will continue to break it down unless you clean and dry it properly. Left in a drawer untreated, a baby tooth can discolor, develop an odor, or crumble over time. A little preparation keeps it looking the same for decades.
Start by rinsing the tooth under running water to remove any visible blood or tissue. Then disinfect it. You have a few options: soak the tooth in rubbing alcohol or hydrogen peroxide for several hours, or boil it in water for five to ten minutes. Boiling is the quickest method, but soaking works just as well if you give it enough time.
After disinfecting, let the tooth air-dry completely on a clean paper towel. This step is important. Moisture trapped inside a sealed container encourages mold or bacterial growth. Once fully dry, place the tooth in a small airtight container. A tiny glass jar, a craft vial, or even a small zip-seal bag works fine. Store it somewhere cool and dry, away from direct sunlight.
If you want extra protection against the tooth drying out and becoming brittle over the years, you can submerge it in a formalin solution (a mix of formaldehyde and water), which is available online and at some pharmacies. This is the same preservation method used in biological labs. For most parents keeping a simple keepsake, though, a clean, dry tooth in a sealed container will hold up well without any special solution.
Stem Cell Banking From Baby Teeth
Baby teeth contain stem cells in their inner pulp, the soft tissue at the core of the tooth. These cells can be extracted, cultured in a lab, and frozen for potential medical use later in your child’s life. Experimental research has shown dental stem cells can develop into nerve cells, bone-forming cells, and even insulin-producing cell clusters, which could one day be relevant for conditions like Alzheimer’s, Parkinson’s, heart damage, bone defects, and type 1 diabetes. None of these applications are in routine clinical use yet, but the science is active.
The process requires coordination with your dentist. The tooth needs to be extracted (not naturally shed at home) so the pulp retains its blood supply and stays viable. Front baby teeth with at least two-thirds of their root still intact are preferred. The tooth is placed in a sterile transport container and shipped to a processing lab, where the pulp is removed, stem cells are isolated, and the cells are cryogenically frozen.
Cost varies by company. Based on published pricing, initial collection and processing fees range from roughly $600 to $2,900, with annual storage fees between $99 and $264 per year. Some companies offer bundled plans that include 20 years of storage for a single upfront payment. This is an investment in a technology that’s still maturing, so it’s worth researching current options and understanding that real-world therapies using dental stem cells remain limited.
What to Do if a Baby Tooth Gets Knocked Out
A knocked-out baby tooth is handled differently than a knocked-out adult tooth. With adult teeth, reimplantation is almost always the goal. With baby teeth, the decision is more nuanced because forcing a tooth back in can damage the developing permanent tooth underneath.
If less than 30 minutes have passed since the tooth was knocked out, reimplantation is sometimes possible. Keep the tooth moist by placing it in milk or having the child hold it inside their cheek (if old enough not to swallow it). Get to a dentist or emergency room quickly. After one to two hours outside the mouth, the chance of successful reimplantation drops significantly.
If reimplantation isn’t possible or appropriate, the dentist will clean the socket and monitor the area. A space maintainer may be placed to prevent the neighboring teeth from shifting into the gap before the permanent tooth erupts.