Recruiting

Testing two cavity-fighting treatments in children with tooth decay

Plain-English translation of NCT07609797 on ClinicalTrials.gov ↗ · Source last updated June 2026 · Translation generated August 2026 · How we translate trials

This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.

What is this trial?

Researchers are testing whether combining two cavity-fighting treatments—sodium fluoride varnish and chlorhexidine rinse—works better than the varnish alone in children with active cavities. The study will measure special proteins in saliva to see how well each treatment reduces tooth decay and inflammation. This helps dentists understand which combination works best to protect children's teeth.

Tooth decay is one of the most common childhood diseases worldwide, and it causes painful inflammation and tissue damage. Researchers want to know if using an antimicrobial rinse before applying fluoride varnish can improve how well the treatment works and reduce the body's inflammatory response to cavity-causing bacteria.

Do you qualify?

You likely qualify if…

you are between 6 and 8 years old and have all your first permanent molars
you have active cavities (at least 6 decayed baby teeth, or one or more active cavity spots, or cavity signs on 10 or more tooth surfaces)
you have not had professional fluoride treatment or antimicrobial rinse applied in the past 3 months
you have healthy gums with no redness, swelling, or bleeding
you do not have a chronic illness, immune system disorder, or serious developmental disorder
your parent or guardian gives written permission for you to participate

You likely don't qualify if…

you have a known allergy to fluoride or varnish materials
you have behavior challenges that would make it unsafe to cooperate during treatment
you are taking antibiotics regularly or have taken them in the past month
you have an active infectious disease or are at high risk for heart infection
you have epilepsy, kidney failure, or a weakened immune system

What participation looks like

If you join, your child will visit the clinic for a treatment appointment where a dentist applies one of two cavity-fighting treatments to their teeth. Depending on which group they're assigned to, they may receive just a fluoride varnish, or the varnish combined with an antimicrobial rinse applied beforehand. The dentist will gently dry the teeth and apply the treatments, which takes about 10–15 minutes. Your child will also provide small saliva samples before and after treatment so researchers can measure how the treatment affects inflammation markers in the mouth.

AI-generated summary from trial data · Aug 29, 2026 · Not medical advice

Testing two cavity-fighting treatments in children with tooth decay

What is this trial?

Do you qualify?

What participation looks like

Trial locations(1 site)