Does the application of fluoride varnishes during pregnancy induce changes in fluoride concentrations in the saliva of pregnant women?

ISRCTN ISRCTN10541688
DOI https://doi.org/10.1186/ISRCTN10541688
Submission date
14/06/2022
Registration date
29/06/2022
Last edited
15/07/2022
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Oral Health
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
During pregnancy, there is a higher risk of getting oral diseases, like caries or periodontal disease. Likewise, certain oral diseases have been related to bad pregnancy outcomes (preeclampsia, preterm birth). A preventive program is necessary that allows pregnant women good control over their oral health and access to preventive methods. The aim of this study is to evaluate the differences in fluoride concentrations in the saliva of pregnant women after the use of three fluoride varnishes (Clinpro White Varnish 3M ESPE®, VOCO Profluorid Varnish®, and MI Varnish GC Tokio®).

Who can participate?
Healthy pregnant women between 16 and 31 weeks of gestation

What does the study involve?
Different questionnaires were used to collect information about sociodemographic background, hygienic habits, beliefs, and epidemiological indices, involving decayed, missing, and filled teeth scoring of those women who assisted in the preventive program between 2018 and 2019 that had already been set up in Clinica Odontológica Universitaria. In the first visit, we collected two samples of saliva (one before and one after the application of the fluoride varnish), and for further analysis, during the other visits (after 15, 30, and 45 days) we took one sample.

What are the possible benefits and risks of participating?
The main benefit pregnant woman can get from participating in the study is an improvement in their oral health and knowledge related to their oral health and their babies. There is no risk in participating.

Where is the study run from?
Clínica Odontológica Universitaria from Universidad de Murcia (Spain)

When is the study starting and how long is it expected to run for?
September 2018 to October 2022

Who is funding the study?
Universidad de Murcia (Spain)

Who is the main contact?
Miss Icíar Fernández Pizarro (Spain)
iciarfp@gmail.com

Contact information

Miss Iciar Fernández Pizarro
Scientific

Universidad de Murcia
Departamento de Dermatología
Estomatología
Radiología y Medicina física
Av. Marqués de los Vélez
Murcia
30008
Spain

Phone +34 868888583
Email iciar.fernandez@um.es
Prof Yolanda Martinez-Beneyto
Principal Investigator

Universidad de Murcia
Departamento de Dermatología
Estomatología
Radiología y Medicina física
Av. Marqués de los Vélez
Murcia
30008
Spain

ORCiD logoORCID ID 0000-0002-1523-9415
Phone +34 868888583
Email yolandam@um.es

Study information

Study designLongitudinal randomized controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Other
Study typePrevention
Scientific titleFluoride varnish effects in fluoride concentration in saliva throughout pregnancy: Longitudinal Clinical Randomized Trial
Study objectivesThe application of fluoride varnishes throughout pregnancy does not induce changes in fluoride concentrations in saliva in pregnant women
Ethics approval(s)Approved 13/05/2019, Comité de Ética de Investigación (Research Ethics Commission) of Murcia University (Calle Santo Cristo 1, 30001, Murcia, Spain; +34 868 88 3614; comision.etica.investigacion@um.es), ref: 2265/2019
Health condition(s) or problem(s) studiedFluoride concentration in saliva in pregnant women
InterventionPregnant women come to the Preventive Program recommended by their general practitioners. In the first visit, we take a sample of saliva before any procedure, then an oral exploration is made during which Decay and Periodontal Indexes are registered. Then the women are randomly assigned to receive the different types of fluoride varnishes or none, and another sample of saliva is taken. During that visit, the women are given advice about oral health and recommended for treatment. Then, there are second, third, and fourth visits after days 15, 30, and 45, and during those visits, another sample of saliva is taken, and, again, the different indexes are registered so we can see how these indexes change as a consequence of the program.
Intervention typeDrug
Pharmaceutical study type(s)
Phase
Drug / device / biological / vaccine name(s)Clinpro White Varnish 3M ESPE®, VOCO Profluorid Varnish®, MI Varnish GC Tokio®
Primary outcome measureFluoride concentration in saliva measured with a specific fluoride electrode, before the application of the varnish, immediately after, after 15 days, 30 days, and 45 days
Secondary outcome measures1. Periodontal status, measured using the Community index of periodontal treatment needs (CPITN) over day 0, day 15, 30 and 45
2. Caries status, measured using the teeth with caries, absent because of caries or permanent teeth with fillings (CAOD) index over day 0, day 15, 30 and 45
Overall study start date01/09/2018
Completion date31/10/2022

Eligibility

Participant type(s)Healthy volunteer
Age groupAdult
SexFemale
Target number of participants80
Total final enrolment89
Key inclusion criteria1. Pregnant woman between 16 and 31 weeks of gestation
2. No abnormal syndromes found during gynecologist exploration
3. Willing to continue with the pregnancy
4. Pregnancy not classified as high risk
5. Acceptation of the informed consent
6. Pregnant women who speak and write the Spanish language properly
7. No mental disabilities
Key exclusion criteria1. Less than 15 weeks of pregnancy
2. More than 32 weeks of pregnancy
3. Abnormal syndromes found in the fetus
4. High-risk pregnancy
5. Women who have taken the decision to abort
6. Extreme difficulties to communicate
7. Patients with permanent orthodontic treatment
Date of first enrolment01/09/2019
Date of final enrolment01/07/2022

Locations

Countries of recruitment

  • Spain

Study participating centre

Clínica Odontológica Universitaria - Universidad de Murcia
Avenida Marques de los Velez s/n
Murcia
30008
Spain

Sponsor information

University of Murcia
University/education

Paseo Teniente Floresta 5
Murcia
30003
Spain

Phone +34 868 88 3000
Email 3rciclo@um.es
Website https://www.um.es
ROR logo "ROR" https://ror.org/03p3aeb86

Funders

Funder type

University/education

Universidad de Murcia
Government organisation / Local government
Alternative name(s)
University of Murcia
Location
Spain

Results and Publications

Intention to publish date30/07/2023
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot expected to be made available
Publication and dissemination planPlanned publication in a PhD Thesis and a high-impact peer-reviewed journal
IPD sharing planThe datasets generated during and/or analysed during the current study are not expected to be made available due to the privacy policy of the Universidad de Murcia

Editorial Notes

15/07/2022: The recruitment end date was changed from 30/07/2022 to 01/07/2022.
17/06/2022: Trial's existence confirmed by Comité de Ética de Investigación (Research Ethics Commission) of Murcia University.