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To measure the benefit of fluoride varnish in preventing dental decay when applied to permanent teeth of children for 3 years in the school setting

A cluster randomised controlled trial to measure the benefit of fluoride varnish preventing dental decay when applied to permanent teeth of children for 3 years in the school setting

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN72589426
Enrollment
2080
Registered
2011-06-17
Start date
2006-02-20
Completion date
Unknown
Last updated
2016-10-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dental caries in children Oral Health Dental caries

Interventions

The application of fluoride varnish on the occlusal surfaces of the first permanent molars up to nine times over a three year period. The control group had no intervention.

Sponsors

University of Manchester (UK)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Schools - all state maintained Local Authority primary schools in the study area. Participating schools must have formally agreed to take part int he study. 2. Children - Aged 7-8 years inclusive of children who attend Local Authority primary schools. Participants must have an informed consent form signed by a parent or legal guardian permitting participation of their child.

Exclusion criteria

Exclusion criteria: 1. Presence of fixed orthodontic appliances involving more than four permanent teeth 2. Participation in any other clinical study during the three months preceding the initial examination 3. Subjects with a history of asthma that required hospitalisation 4. Subjects with a histroy of severe allergic reactions that required hospitalisation 5. Subjects experiencing ulcerative gingivitis or stomatitis 6. Subjects with a history of allergy to any of the ingredients in the test products 7. Subject is uncooperative/ unable to be examined 8. Children attending special schools

Design outcomes

Primary

MeasureTime frame
The decayed, filled surfaces increment in first permanent molars on the intention-to-treat (ITT) population. The increment will be measured visually.

Secondary

MeasureTime frame
1. The decayed, filled surfaces increment in deciduous molars on the ITT population. The increment will be measured visually. 2. A sub group analysis for the frequency of applications of the varnish

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026