ClinicalTrials.gg
Status unknownNCT04255251Updated Oct 5, 2021

Effectiveness Silver Diamine Fluoride Versus Sodium Fluoride in Arresting Caries Around Crown Margins in Older Adults

An Early Phase 1 interventional study of Silver Diammine Fluoride and Fluoride Varnishes in Caries Roots, Flouride Varnish and Caries; Dentin, sponsored by University of New England. Status unknown at 1 site in United States. Open to participants aged 65 Years to 85 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-10-05.

Sponsored by University of New England · Early Phase 1, Interventional, and Prevention

The sponsor has not verified this record recently (last verified Oct 2021), so the status shown — last known as Recruiting — may be out of date.
Phase
Early Phase 1
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
65 Years to 85 Years
Sex
All
01

Study summary

Dental caries is a multifactorial, progressive disease which is the major causes of dental pain, infection and tooth loss. Dental caries can substantially compromise the quality of life in older adults 1 2. As the number of older adults in the US increases, the dental professionals have become increasingly concerned with the dental need of elderly and preventive regimes to reduce the incidence of caries3 .

Prevention becomes an area of paramount importance. Many studies have advocated nonsurgical intervention for shallow dentin caries lesion.The most effective method for prevention to date is considered to be fluoride. In the United states fluoride has been incorporated in many ways like water fluoridation, fluoride mouth wash, dentifrices and professionally applied fluoride varnishes . The American Dental Association (ADA) recommended the use of fluoride for patients of all ages who are at risk of developing dental caries7 . With the high success of fluoride, another treatment method using Silver Diamine Fluoride (SDF) is gaining popularity in the United States. SDF has been used in many countries like Japan, Australia, China, and Cuba for treatment of caries . Successful treatment data from other countries is promising, and promoting the use of SDF in the United States. SDF is available in the United States as 38% aqueous solution and approved as a desensitizing agent. American Dental Association published an evidence-based clinical practice guideline on nonrestorative treatments for caries teeth and recommended use of SDF on a carious cavitated lesion on permanent teeth9 . Clinical studies have shown the effectiveness of SDF in arresting root caries in older adults.

Read the detailed description

Potential subjects will be identified through regular appointments. Screening will be performed on subjects to determine their eligibility based on inclusion and exclusion criteria. Subjects will sign an informed consent before enrollment in the study. Patient will be receiving one of the two fluoride treatments, Silver Diamine Fluoride or Sodium fluoride, to arrest caries around crown margins. Clinical and radiographic exam will be performed on all the participants.

Clinical exam will include the following

  1. DIAGOdent:
  2. Tectile exam:

The procedures of every clinical appointments will be as following:

First appointment:

Visit will include

  • Health history
  • Caries risk assessment
  • Clinical exam (DIAGNOdent, tactile) (described above)
  • Radiograph (described above)
  • Subject will sigh consent form
  • Treatment group will receive SDF
  • Control group will receive Fluoride varnish

Second visit (6 month from the first appointment ):

Visit will include

  • Health history retake
  • Caries risk assessment retake
  • New Clinical exam (DIAGNOdent, tactile)
  • New Radiograph
  • Subject will receive his or her treatment according to their allocation

Third visit (12 month from the first appointment ):

Visit will include

  • Health history retake
  • Caries risk assessment retake
  • New Clinical exam (DIAGNOdent, tactile)
  • New Radiograph
  • Subject will receive his or her treatment according to their allocation

Third visit (12 month from the first appointment ):

Visit will include

  • Health history retake
  • Caries risk assessment retake
  • New Clinical exam (DIAGNOdent, tactile)
  • New Radiograph
  • Subject will receive his or her treatment according to their allocation
02

Conditions studied

  • Caries Roots
  • Flouride Varnish
  • Caries; Dentin
  • Caries Arrested

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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 200 is above the median of 62 across 35 interventional studies indexed under Root Caries.

Browse Root Caries studies →

Lead sponsor

University of New England is the lead sponsor of 12 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
65 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  • 65-85 years old with crown/bridges
  • Open crown margins
  • Decay present around crown margins
  • Pt is not intention to go with the conventiontial restorative treatment to replace the crown for any reason
  • Subjects who can do the follow up for at least one year

Exclusion criteria

Exclusion Criteria:

  • Teeth with periapical lesion
  • Teeth which have pain to percussion
  • Subjects who have silver or fluoride allergy
  • Subjects who have gingivitis
  • Subjects who have stomatitis
  • Subjects who have tooth mobility
  • Subjects who have furcation involvement
05

Study design

Phase
Early Phase 1
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
200 participants (estimated)

Study arms

  • Experimental
    Intervention group

    Subjects in this group will receive Silver Diamine Fluoride around their crown margins every six month for the next 3 years.

    Drug: Silver Diammine Fluoride

  • Active comparator
    Fluoride varnish group

    Subjects in this group will receive fluoride varnish around their crown margins every six month for the next 3 years.

    Drug: Fluoride Varnishes

Interventions

  • Subjects will receive SDF around their crown margins every 6 months for next 3 years.

  • Subjects will receive SDF around their crown margins every 6 months for next 3 years.

06

What researchers measure

Primary outcomes

  1. Tactile exam to evaluate extend of caries around tooth margin

    WHO ball end probe will be used to detect cavities around the restoration margins. Code 0: Sound tooth surface with restoration Code 1: First visual change in enamel Code 2: Distinct visual change in enamel/ dentin adjacent to restoration Code 3: Carious defect of more than 0.5 mm Code 4: Marginal caries in enamel/dentin/cementum adjacent to restoration with dark shadow Code 5: Distinct cavity adjacent to restoration Code 6: Extensive distinct cavity with visible dentine

    Time frame: Every 6 month for next 3 years

Secondary outcomes

  1. DIAGOdent: laser fluorescence to aid in the detection of caries

    As the incident laser light is dispersed into the site, carious tooth structure will exhibit fluorescence, proportionate to the degree of caries, resulting in elevated scale readings on the display. Healthy tooth structure exhibits little or no fluorescence and will result in very low scale readings on the display. Over 90% accurate in detecting lesions not detectable with an explorer or bitewing X-rays. The remote display for DIAGNOdent pen uses infra-red signals, and the values are shown simultaneously on the DIAGNOdent pen and on the remote display

    Time frame: Every 6 month for next 3 years

07

Study locations

1 of 1 sites recruiting
  • University of New England
    Portland, Maine 04101, United States
    Recruiting
08

References and documents

Publications

  • Giusti L, Steinborn C, Steinborn M. Use of silver diamine fluoride for the maintenance of dental prostheses in a high caries-risk patient: A medical management approach. J Prosthet Dent. 2018 May;119(5):713-716. doi: 10.1016/j.prosdent.2017.06.007. Epub 2017 Sep 6. PubMed 28888414 ↗
  • Seifo N, Cassie H, Radford JR, Innes NPT. Silver diamine fluoride for managing carious lesions: an umbrella review. BMC Oral Health. 2019 Jul 12;19(1):145. doi: 10.1186/s12903-019-0830-5. PubMed 31299955 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Jun 2021 (actual). Primary completion is estimated for Jan 2023, 18 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 29, 2020
First posted
Feb 5, 2020
StartActual
Jun 26, 2021
Primary completionEst.
Jan 3, 2023
CompletionEst.
Jan 3, 2024
Last update
Oct 5, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 5, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04255251
Lead sponsor
University of New England
Responsible party
Shaista Rashid (Assistant Clinical Professor, University of New England) — Principal investigator
First posted
Feb 5, 2020
Start date
Jun 26, 2021
Primary completion
Jan 3, 2023 (estimated)
Completion
Jan 3, 2024 (estimated)
Last update
Oct 5, 2021

Study contacts

Shaista Rashid, B.D.S, M.S.
Contact
srashid2@une.edu
2072214861
Mohamed ElSalhy, MPH, PHD
Contact
melsalhy@une.edu
2072214862

Oversight

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

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