Over half of children ages 6 to 8 — and nearly 60 percent of U.S. adolescents — have cavities, according to the Centers for Disease Control and Prevention.
In 2019 and early 2020, researchers from the NYU College of Dentistry visited 47 New York elementary schools, where they examined the teeth of about 3,000 students in kindergarten through third grade and gave them either sealants or an application of SDF.
When researchers visited the schools again in 2021 and 2022 after pausing the program during the early days of the pandemic, they again examined the children’s teeth. While 82 percent of the kids treated with sealants showed no new cavities, 81 percent treated with SDF also had no new cavities. SDF was even more effective than sealants for students with existing cavities: 56 percent of those with SDF didn’t have their cavities worsen, compared with 46 percent of kids treated with sealants.
In the new study, researchers note that SDF could help tackle some limitations of school sealant programs, because it is cheaper and quicker to apply and can be administered by registered nurses and not just dentists., those children are 15 percent less likely to get sealants and twice as likely to have cavities go untreated than their counterparts in higher-income homes.
The researchers in the new study call SDF an “attractive alternative” that could reduce oral health problems worldwide.
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