ClinicalTrials.gg
RecruitingNCT06514885Updated Dec 9, 2024

Silver Diamine Fluoride Application on Root Caries Fillings

An interventional study of SDF solution application and Tonic water in Root Caries, sponsored by The University of Hong Kong. Recruiting at 1 site in Hong Kong. Open to participants aged 60 Years and older. Per ClinicalTrials.gov, last updated 2024-12-09.

Sponsored by The University of Hong Kong · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 9 months after the study started (first participant enrolled Oct 2023, registered Jul 2024).
  • Started Oct 2023; still recruiting 3 years 1 month later.
Phase
Not applicable
Study type
Interventional
Enrollment
184
Allocation
Randomized
Ages
60 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn the influence of prior silver diamine fluoride (SDF) application on root caries fillings.

The main questions to answer

  1. Compare the success of fillings placed in dental root decay that have prior SDF application and those without prior SDF application;
  2. Compare patient-based subjective evaluations on the two approaches mentioned above in treating root caries.

Participants will be allocated into two group

  1. prior SDF application before receiving root caries fillings
  2. directly receiving root caries fillings without any SDF application
Read the detailed description

The aim of the proposed study is to investigate the influence of prior SDF application on the restorative treatment of root caries.

The objectives of the study are to

  1. Compare the success rate of restorations placed in root caries lesions that have prior SDF application and that of restorations placed without prior SDF application;
  2. Compare patient-based subjective evaluations on the two different approaches mentioned-above in treating root caries lesions.

Hypotheses to be tested:

  1. Prior SDF application increases the success rate of restorations placed in root caries;
  2. Patient-based subjective evaluations of the treatment outcomes are better when SDF is applied to the root caries lesions prior to restoring the lesions.
02

Conditions studied

  • Root Caries

Browse trials for

Keywords

  • silver diamine fluoride
  • older adults
  • restorative treatment
  • root caries
03

In context

Root Caries

39 studies on the registry are indexed under Root Caries; 14 are open to participants now.

This study's planned enrollment of 184 is above the median of 62 across 35 interventional studies indexed under Root Caries.

Browse Root Caries studies →

Lead sponsor

The University of Hong Kong is the lead sponsor of 1,292 studies on the registry; 348 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
60 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Older adults (aged 60 or above)
  • At least one untreated decayed dental root

Exclusion criteria

Exclusion Criteria:

  • No self-care ability for basic daily activities
  • Teeth with severe decay (cannot be filled)
  • Teeth indicated for extraction
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
184 participants (estimated)

Study arms

  • Experimental
    SDF group

    Participants of SDF group will be applied with SDF before placement of root caries restoration

    Other: SDF solution application

  • Placebo comparator
    Control group

    Participants of control group will be applied with placebo (tonic water) before placement of root caries restoration

    Other: Tonic water

Interventions

  • OtherSDF solution application

    silver diamine fluoride (SDF) solution is highly effective in stopping and arresting the progress of decay in dental roots of older adults. The American Dental Association (ADA) has published a guideline based on the up-to-date evidence to support the use of SDF for managing tooth decay. As a non-invasive procedure, application of SDF is simple, quick, painless and non-aerosol generated.

  • OtherTonic water

    Tonic water will be used as a placebo to mimic the SDF solution.

06

What researchers measure

Primary outcomes

  1. Clinical outcome

    Compare the success rate of restorations placed in root caries lesions that have prior SDF application or that of restorations placed without prior SDF application

    Time frame: 24 months follow-up

Secondary outcomes

  1. Patient-based subjective evaluation

    Compare patient-based subjective evaluations on the two different approaches in treating root caries lesions. The Chinese version of General Oral Health Assessment Index (GOHAI) will be adopted as a tool to assess the oral health-related quality of life (OHRQoL) of the participants. It contains 12 questions covering three domains: physical function, pain and discomfort, and psychosocial function. The total GOHAI score is generated by adding up the score of each response to the 12 questions, and the total score ranges from 12 to 60. A higher score indicates a better perceived OHRQoL.

    Time frame: 24 months follow-up

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Li R, Lo EC, Liu BY, Wong MC, Chu CH. Randomized clinical trial on arresting dental root caries through silver diammine fluoride applications in community-dwelling elders. J Dent. 2016 Aug;51:15-20. doi: 10.1016/j.jdent.2016.05.005. Epub 2016 May 18. PubMed 27208876 ↗
  • Zhang W, McGrath C, Lo EC, Li JY. Silver diamine fluoride and education to prevent and arrest root caries among community-dwelling elders. Caries Res. 2013;47(4):284-90. doi: 10.1159/000346620. Epub 2013 Feb 5. PubMed 23392087 ↗
  • Lo EC, Luo Y, Tan HP, Dyson JE, Corbet EF. ART and conventional root restorations in elders after 12 months. J Dent Res. 2006 Oct;85(10):929-32. doi: 10.1177/154405910608501011. PubMed 16998134 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 9, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06514885
Responsible party
Sponsor
First posted
Jul 23, 2024
Start date
Oct 1, 2023
Primary completion
Oct 1, 2026 (estimated)
Completion
Oct 1, 2026 (estimated)
Last update
Dec 9, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

No contact was published for this record. The registry link below has the sponsor’s details.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion