Povidone-iodine to prevent repeat severe tooth decay in young children

Povidone Iodine Efficacy Study (PIES)

NIH-funded research University of Rochester · NIH-11352580

This project looks at whether applying povidone-iodine to young children's teeth after dental treatment can reduce repeat severe cavities.

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionUniversity of Rochester NIH-funded
Lab location1 site (Rochester, United States)
Project IDNIH-11352580 on NIH RePORTER

What this research studies

If your child has had severe early childhood cavities treated under anesthesia, researchers will offer an added treatment after surgery aimed at lowering the mouth bacteria that drive new cavities. Children will receive a topical 10% povidone-iodine application in the dental clinic and will be followed with regular dental exams to see if new caries develop. Mouth swabs may be collected to measure cavity-causing bacteria and compare bacterial changes between children who receive the iodine and those who do not. Standard care such as fluoride varnish and family counseling will also be provided so the study can measure any extra benefit from the iodine.

Who could benefit from this research

Good fit: Ideal candidates are young children, especially toddlers and preschoolers (roughly ages 1–5), who recently received treatment for severe early childhood caries.

Not a fit: Children without severe early childhood caries, older patients, or those not undergoing post-operative dental follow-up are unlikely to benefit from this treatment.

Why it matters

Potential benefit: If successful, this could lower the chance of new severe cavities and reduce the need for repeat dental surgery and anesthesia in young children.

How similar studies have performed: Small studies and reviews have suggested 10% povidone-iodine is promising for preventing caries, but there are few high-quality randomized trials to prove it yet.

Where this research is happening

Rochester, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.