Preventing root caries in older adults using fluoride varnish with added bioactive glass

Root Caries Prevention Using Fluoride Varnish Fortified With Strontium-doped Bioactive Glass Ceramic: a Randomized Double-blind Controlled Clinical Trial

Not applicable Interventional The University of Hong Kong · NCT06131957

This study is testing if adding a special glass to fluoride varnish can help older adults prevent root cavities better than just using fluoride alone.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment540 (estimated)
Ages60 Years and up
SexAll
SponsorThe University of Hong Kong Academic / other
Locations1 site (Hong Kong)
Trial IDNCT06131957 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to evaluate the effectiveness of 5% sodium fluoride varnish, both with and without Strontium-doped bioactive glass (SBGC), in preventing root caries among community-dwelling older adults over a 36-month period. Participants will be randomly assigned to receive either the fluoride varnish with SBGC or the standard fluoride varnish quarterly. The study seeks to determine if the addition of SBGC enhances the protective effects of fluoride against root caries development. The trial is designed as a double-blind, randomized controlled trial to ensure unbiased results.

Who should consider this trial

Good fit: Ideal candidates for this study are community-dwelling adults aged 60 years and older who have a good collaborative relationship with healthcare providers.

Not a fit: Patients with fewer than 8 natural teeth, severe medical conditions, or those using high fluoride toothpaste may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved preventive strategies for root caries in older adults, potentially reducing dental decay and associated complications.

How similar studies have performed: Previous studies have shown promising results with fluoride varnish in caries prevention, but the specific combination with SBGC is a novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult \> 60 years old
* good collaborative relationships

Exclusion Criteria:

* less than 8 natural teeth
* have severe medical conditions
* are in use of high fluoride toothpaste

Where this trial is running

Hong Kong

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Dental Caries of Root SurfaceRoot CariesStrontium-doped Bioactive Glass CeramicFluoride varnishOlder adultsRoot cariesDentinePrevention
Last reviewed 2026-06-15 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.