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ABSTRACT: Introduction
White spot lesions associated with orthodontic treatment are a common problem. Recent studies reported increased resistance to acid demineralization of enamel after sub-ablative CO2-laser irradiation in a combination with fluoride application. The aim of the study is to assess the efficacy of CO2-laser in combination with a fluoride varnish in the prevention, severity, and extent of white spot lesions during orthodontic treatment with fixed appliances.Methods and analysis
This is a protocol for a randomized, split-mouth controlled, clinical trial. The participants will be children aged 12-18 years at high caries risk, requiring fixed orthodontic treatment. The vestibular surfaces of maxillary anterior teeth of eligible patients will be exposed to CO2-laser irradiation in combination with fluoride therapy and fluoride therapy alone followed by bonding of orthodontic brackets. The patients will be recalled 6 and 12 months post-irradiation. Outcome measures will be visual examination with International Caries Detection and Assessment System criteria and SoproLife fluorescence. Data will be analyzed by Student's t test for paired samples and proportional odds logistic regression model, p<0.05.Ethics and dissemination
The study protocol has been approved by the Committee for Scientific Research Ethics, Medical University-Plovdiv, Bulgaria (Reference number P-605/27.03.2020, Protocol of approval No. 2/01.04.2021) and registered on a publicly accessible database. This research received institutional funding from the Medical University-Plovdiv, Bulgaria. The results will be presented through peer-reviewed publications and conference presentations.Trial registration
ClinicalTrials.gov NCT04903275 . Registered on June 2021.
SUBMITTER: Belcheva AB
PROVIDER: S-EPMC8917669 | biostudies-literature | 2022 Mar
REPOSITORIES: biostudies-literature

Trials 20220312 1
<h4>Introduction</h4>White spot lesions associated with orthodontic treatment are a common problem. Recent studies reported increased resistance to acid demineralization of enamel after sub-ablative CO<sub>2</sub>-laser irradiation in a combination with fluoride application. The aim of the study is to assess the efficacy of CO<sub>2</sub>-laser in combination with a fluoride varnish in the prevention, severity, and extent of white spot lesions during orthodontic treatment with fixed appliances.< ...[more]