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CompletedNCT00723515Updated Jul 28, 2008

Therapeutic Effect of Two Fluoride Varnishes on White Spot Lesions: a Clinical Study

A Phase 4 interventional study of sodium fluoride and sodium fluoride calcium fluoride in Dental Caries, sponsored by University of Pernambuco. Completed at 1 site in Brazil. Open to participants aged 7 Years to 12 Years. Per ClinicalTrials.gov, last updated 2008-07-28.

Sponsored by University of Pernambuco · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
45
Allocation
Randomized
Ages
7 Years to 12 Years
Sex
All
01

Study summary

The study hypothesis is the difference in therapeutic effect of two varnish formulations (G1 = NaF, 2.26%F, G2 = NaF, 2.71% F + CaF2). These products are commercially available in the Brazilian and international market and they are used for dental caries as white spot lesions control.

Read the detailed description

The aim of this study was to evaluate the therapeutic effect of two varnish formulations (G1 = NaF, 2.26%F, G2 = NaF, 2.71% F + CaF2) on the remineralization of white spot lesions (WSL). The sample was composed of 15 (7- to 12-year-old) children with 45 active WSL in anterior permanent teeth. The children were randomly divided in two groups providing 22 lesions for G1 and 23 for G2. The children were submitted to weekly varnish applications 4 times. The WSL were evaluated twice: baseline and on week 4. Maximum lesion dimensions (mesial-distal and incisal-gingival) were measured in millimeters and classified in four grades of size. WSL were also recorded assessing lesion activity by one calibrated examiner. The Pearson chi-square and Fisher's exact tests were used (P \< 0.01). WSL reductions were observed in both varnish groups (Chi-square= 0.15, d.f.=1, P=0.90); and with similar magnitude (in mm): 1.19 and 1.29 for G1 and G2, respectively. Thirty-six WLS (15 in G1 and 26 in G2) were classified as inactive in week 4 reaching an overall value of 80%. No difference was observed between G1 and G2 regarding activity scores (Fisher's exact test, p > 0.01). It can be concluded that after 4 applications the two varnish formulations tested produced similar clinical effects indicating the reduction and the control of carious activity in most WSL.

02

Conditions studied

  • Dental Caries

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Keywords

  • White spot lesion
  • Tooth remineralization
  • Fluoride varnishes
03

In context

Dental Caries

1,137 studies on the registry are indexed under Dental Caries; 201 are open to participants now.

This study's enrollment of 45 is below the median of 60 across 936 interventional studies indexed under Dental Caries.

Browse Dental Caries studies →

Lead sponsor

University of Pernambuco is the lead sponsor of 29 studies on the registry; 4 are open to participants now.

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

04

Who can participate

Ages eligible
7 Years to 12 Years
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

  • regular hygiene habits (brushing teeth everyday)
  • registered in public schools

Exclusion criteria

Exclusion Criteria:

  • dental caries such as small cavities or restorations in the target teeth (permanent anterior teeth)
  • development enamel alterations (hypoplasia, fluorosis) or periodontal disease
  • children using orthodontic devices
  • under medical treatment
  • taking any kind of medicine
  • no informed consent form signed
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
45 participants (actual)

Study arms

  • Active comparator
    G1

    NaF (sodium fluoride varnish) with 2.26% of fluoride

    Drug: sodium fluoride

  • Experimental
    G2

    NaF (sodium fluoride)2.71% of fluoride plus CaF2 (calcium fluoride)

    Drug: sodium fluoride calcium fluoride

Interventions

  • sodium fluoride 5%

    Also known as: Duraphat®, Colgate Palmolive GmbH, Hamburg, Germany

  • Drugsodium fluoride calcium fluoride

    sodium fluoride 5% + calcium fluoride

    Also known as: Duofluorid XII®, FGM, Joinville, Brazil

06

What researchers measure

Primary outcomes

  1. reduction of the size of the caries lesion

    Time frame: 4 weeks

Secondary outcomes

  1. Inactivation of carious lesions

    Time frame: 4 weeks

07

Study locations

1 site
  • University of Pernambuco
    Camaragibe, Pernambuco 54753-220, Brazil
08

References and documents

Publications

  • Ferreira JM, Aragao AK, Rosa AD, Sampaio FC, Menezes VA. Therapeutic effect of two fluoride varnishes on white spot lesions: a randomized clinical trial. Braz Oral Res. 2009 Oct-Dec;23(4):446-51. doi: 10.1590/s1806-83242009000400015. PubMed 20027453 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 28, 2008, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00723515
Lead sponsor
University of Pernambuco
First posted
Jul 28, 2008
Start date
Feb 2007
Primary completion
Jun 2007
Completion
Oct 2007
Last update
Jul 28, 2008

Study contacts

Jainara MS Ferreira, Master
principal investigator · University of Pernambuco
Ana Karla R Aragão, Graduate
study chair · Univeristy of Pernambuco
Adriana DB Rosa, student
study chair · Federal University of Paraiba
Fabio C Sampaio, PhD
study chair · Federal Univerisity of Paraiba
Valdenice A Menezes, PhD
study chair · Univeristy of Pernambuco

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2008. You cannot join it, but the record below documents what was studied.

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