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The Effect of Probiotic Lozenges on White Spot Lesion Development in Orthodontic Patients

The Effect of Probiotic Lozenges on White Spot Lesion Development in Orthodontic Patients: Prospective Randomized Controlled Trial

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05738369
Enrollment
75
Registered
2023-02-22
Start date
2022-02-14
Completion date
2022-12-01
Last updated
2026-04-09

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

Conditions

White Spot Lesion

Keywords

White spot lesions, Probiotic lozenges, QLF

Brief summary

The goal of this randomized clinical trial was to investigate the effect of probiotic lozenges on the development of white spot lesions (WSLs) compared to a positive control, and no treatment.

Detailed description

Background: Recently, the use of probiotics has emerged as a treatment for prevention of oral cavity diseases including periodontal problems, and initial caries. The objectives of this prospective randomized clinical trial was to investigate the effect of probiotic lozenges on the development of white spot lesions (WSLs) compared to a positive control, and no treatment. Methods: Quantitative light induced fluorescence (QLF) images were taken for three randomly allocated groups (intervention group, n=23; positive control, n=23; negative control, n=24) of patients undergoing orthodontic treatment in three separate occasions (T0: before the start of study; T1: at 6 weeks later; T2: at 3 months after the commencement of the study). Subjects in the intervention group were instructed to take one probiotic lozenge containing two strains of Lactobacillus reuteri twice daily. Sugar-free lozenges were used in the positive control group and no lozenges for the negative control group. The QLF images were analyzed using a dedicated software in order to quantitatively analyze each tooth. The primary outcomes measured were the number of newly developed lesions in each group, lesion area and amount of mineral loss (ΔF). Means and standard deviations were calculated using the Statistical Package for the Social Science (SPSS version 28, Chicago, IL, USA). Split plot ANOVA (SPANOVA) test for repeated measures was used to check differences within and between the three groups regarding lesion area and ΔF. To check which group is different from the others, Tukey's test was used.

Interventions

DIETARY_SUPPLEMENTBiogaia L. reuteri Prodentis® lozenges

Participants were instructed to use the lozenges twice daily after brushing their teeth; once in the morning and once in the evening

DIETARY_SUPPLEMENTHersheyland Ice Breakers Mints sugar free lozenges

Hersheyland Ice Breakers Mints sugar free lozenges

Sponsors

Jordan University of Science and Technology
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

The investigated supplements were provided to the participants by a research assistant. The participants in the negative control group, however, were not blinded because they did not receive any supplements

Intervention model description

Three arm parallel design

Eligibility

Sex/Gender
ALL
Age
17 Years to 33 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy patients from both sexes * Having full fixed orthodontic appliances with expected remaining treatment duration of at least 6 months * Optimum oral hygiene * Maximum of 3 restored teeth * Absence of defective enamel formation in the form of hypocalcification or hypoplasia

Exclusion criteria

* Patients with poor oral hygiene * Defective enamel * Extensive restorations * Gingival hyperplasia * Salivary glands diseases * Smoking, alcohol consumption, mouth wash use, antibiotic or probiotic intake in the last 3 months.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of white spot lesions (WSL)3 monthsNumber of newly developed white spot lesions
Lesion area3 monthsSurface area of the WSL (in pixels)
ΔF%3 monthsAverage lesion fluorescence loss (ΔF%) reflecting mineral loss in percent.

Secondary

MeasureTime frameDescription
ΔFMax (%)3 monthsDeepest point in the lesion
ΔR30 (%)3 monthsAmount of plaque present

Countries

Jordan

Contacts

PRINCIPAL_INVESTIGATORSusan Al-Khateeb

Faculty of Dentistry/Jordan University of Science and Technology

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 10, 2026