Liquid Treatment Stops Kids' Cavities in Seconds, No Drill

Thousands of young children end up in emergency rooms each year because of untreated cavities, sometimes needing surgery under general anesthesia just to fix their teeth. Now scientists have proven that a liquid treatment applied in seconds can stop tooth decay without any of that pain or fear.

Researchers at the University of Michigan led a major clinical trial with 830 children under age 6 across Michigan, New York, and Iowa. They found that silver diamine fluoride stopped decay in more than half of treated baby teeth when applied every six months.

The treatment takes just seconds per tooth. A dentist brushes the liquid directly onto the cavity with a small sponge applicator. No drilling, no shots, no need to sedate a scared toddler.

"This is a very effective and safe treatment, even in children as young as 1," said Margherita Fontana, professor of dentistry at the University of Michigan and the study's lead investigator. Tooth decay affects more than 40% of children in the United States, making it the most common chronic childhood disease.

Countries around the world have used silver diamine fluoride successfully for decades. American dentists have used it off-label since 2014, when it was approved for treating tooth sensitivity. But this is the first large U.S. clinical trial proving it works safely as a cavity treatment.

The evidence matters because it could lead to FDA approval as an official cavity drug. That would mean better insurance coverage, more providers offering it, and access in medical offices, not just dental clinics.

The treatment works especially well for very young children, older adults, people with disabilities, and anyone with severe dental anxiety. It could also help families with limited access to conventional dental care.

There is one visible trade-off. The silver permanently darkens the decayed part of the tooth. For baby teeth that will eventually fall out, many families may find that acceptable compared to surgery.

The Ripple Effect

Young children often see pediatricians years before visiting a dentist for the first time. Broader acceptance of this treatment could mean medical doctors stop cavities early, before they become painful infections requiring emergency care or hospital procedures.

The $12 million study, funded by the National Institute of Dental and Craniofacial Research, continued through COVID-19 disruptions that began in 2018. The manufacturer of the product tested, Elevate Oral Care, now has the clinical data needed to apply for full FDA approval.

For some children, reapplying the liquid every few months could control cavities until baby teeth fall out naturally. For adults, it might work as long-term treatment or temporary protection until they can afford restorative procedures.

"For almost anyone, this can arrest the decay and stop the infection and the pain it causes," Fontana said. Millions of families could soon have a gentler option for one of childhood's most common health problems.