Major U.S. Trial Shows Low-Cost Liquid Can Stop Kids’ Cavities Without Drilling
Major U.S. Trial Shows Low-Cost Liquid Can Stop Kids’ Cavities Without Drilling
Philip UwaomaSat, August 1, 2026 at 12:08 PM UTC
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For decades, treating cavities has almost always meant drills, fillings, and, in severe cases, surgery. But new research suggests many young children could avoid those procedures thanks to a simple liquid that stops tooth decay before it worsens.
A large U.S. clinical trial has found that silver diamine fluoride (SDF), an inexpensive liquid applied directly to decayed teeth, can successfully halt cavity progression without drilling, injections, or anesthesia. The findings, published in JAMA Pediatrics, provide the strongest evidence yet that the treatment is both safe and effective in young children, potentially paving the way for full approval by the U.S. Food and Drug Administration (FDA).
Landmark Trial Strengthens Case for Wider Use
Photo by Evgeniy Kozlov on UnsplashPhoto by Evgeniy Kozlov on Unsplash
The Phase III trial, led by researchers at the University of Michigan School of Dentistry, enrolled 830 children younger than six years old from dental offices, pediatric medical practices, and Head Start programs across Michigan, New York, and Iowa. Researchers evaluated whether applying 38% silver diamine fluoride every six months could stop active tooth decay in baby teeth.
The results were encouraging. The treatment successfully arrested decay in more than half of affected baby teeth, offering a noninvasive alternative to traditional cavity treatment, which typically requires removing decayed tooth material before placing a filling.
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Lead investigator Margherita Fontana said the treatment is safe even for children as young as one year old. That finding is especially significant because tooth decay remains the most common chronic disease affecting children in the United States, with more than 40% experiencing cavities. Left untreated, those cavities can lead to severe pain, infections, difficulty eating or sleeping, missed school days, and emergency hospital visits.
Expanding Access to Dental Care
Researchers believe SDF could transform care for patients who struggle with conventional dental treatment, including toddlers, older adults, people with developmental or physical disabilities, individuals with severe dental anxiety, and those with limited access to dentists.
The treatment involves painting the liquid onto the cavity using a small sponge applicator, eliminating the need for drilling or sedation. One drawback is that the decayed portion of the tooth permanently turns dark after treatment.
Scientists say the trial provides the rigorous evidence needed to support an FDA application for SDF as a cavity treatment. If approved, experts believe insurers may be more willing to cover the therapy, healthcare providers could adopt it more widely, and more children could receive treatment before cavities become painful or require surgery.
Researchers also note that repeated applications may preserve baby teeth until they naturally fall out, while adults could use the treatment as either long term cavity management or temporary protection before restorative dental work becomes possible.
This story was originally published by Men's Journal on Aug 1, 2026, where it first appeared in the Health section. Add Men's Journal as a Preferred Source by clicking here.
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