Dental care can be an intimidating experience, particularly when treating cavities requires drilling or other procedures. A recent clinical trial suggests that a much quicker option could help manage tooth decay in some children without those steps.
The treatment is called silver diamine fluoride, or SDF. It is a liquid applied directly to an affected area of a tooth and takes only about 10 seconds to administer.
Researchers from several U.S. institutions studied the treatment in 830 children younger than 6 who had significant cavities in their baby teeth. The results, published in JAMA Pediatrics, found that a single SDF application stopped the progression of tooth decay in 54% of treated cavities six months later.
For comparison, 22.5% of cavities treated with a placebo showed the same result.
The findings could add important evidence to the discussion surrounding wider use of SDF for young children in the United States.
How the treatment works
SDF has been used in dentistry for years and is designed to slow or stop the progression of tooth decay. The liquid is applied directly to the affected portion of a tooth.
The silver component helps reduce bacteria associated with decay, while fluoride supports the remaining tooth structure. Because the application is quick and does not require drilling, it may be particularly useful for children who have difficulty undergoing traditional dental procedures.
One notable drawback is cosmetic. The treated portion of the tooth can develop a permanent dark stain after SDF is applied. For some families, that visible change may be an important consideration when deciding whether the treatment is appropriate.
The clinical trial included 830 children
The study began in 2018 and was conducted at three locations in the United States. Researchers compared SDF with a placebo treatment in children between 1 and 6 years old.
Six months after treatment, SDF had stopped the progression of decay in more than half of the cavities that received the treatment.
Researchers also reported no meaningful difference in tooth pain between the SDF and placebo groups. Most reported side effects were mild to moderate and were not necessarily connected to the treatment.
The results provide evidence that SDF can be an effective option for managing certain cavities in young children, although the study does not establish that it should replace fillings or other dental procedures in every situation.
Why access to care matters
The potential value of SDF extends beyond the dental office.
Some children have limited access to regular dental services and may see pediatricians more frequently than dentists during their early years. Because SDF can be applied quickly, researchers believe it could eventually have a role in medical settings if appropriate training and referral systems are established.
A pediatrician or other medical professional would still need to recognize which cavities are suitable for the treatment and know when a child should be referred to a dentist.
That approach could give families more time to connect with a regular dental provider while helping manage tooth decay before it becomes more difficult to treat.
What the study does not show
The trial focused only on baby teeth in children ages 1 to 6. It therefore does not establish whether SDF should be used instead of restorative procedures for cavities in permanent teeth.
The treatment also has not received FDA approval specifically for managing tooth decay in children. It has been cleared for certain other dental uses in the U.S., including treatment of tooth sensitivity in adults, but pediatric use faces additional regulatory considerations.
The researchers say the new findings provide meaningful evidence that could support a future application for expanded approval.
A possible new option for families
Tooth decay remains common among young children in the United States. Federal health data show that more than 1 in 10 children ages 2 to 5 have at least one cavity in their baby teeth, while the figure rises to nearly 1 in 5 among children ages 6 to 8.
For children with extensive tooth decay, conventional care can sometimes involve more involved procedures and, in certain cases, general anesthesia. Access to those services can also take time.
SDF does not eliminate the need for dental care, but the new research suggests it could become another tool for managing certain cavities while children receive ongoing care.
If future regulatory steps are successful, the 10 second application could give dentists and families another way to address childhood cavities quickly while working toward longer term dental health.
