Evidence map›Paper›PMID 34615458›Full record

ArticleBMC microbiology2021

Effect of drops containing Lactobacillus reuteri (DSM 17938 and ATCC PTA 5289) on plaque acidogenicity and other caries-related variables in orthodontic patients.

Sahal Alforaidi, Andrea Bresin, Naif Almosa, Anna Lehrkinder, Peter Lingström

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04593017 (Effect of Drops Containing Lactobacillus Reuteri), which is not on this map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04593017 naunknown statusnot on this map

Effect of Drops Containing Lactobacillus Reuteri (DSM 17938 and ATCC PTA 4659) on Plaque Acidogenicity and Other Caries Related Variables in Orthodontic Patients

TypeinterventionalSponsorGöteborg UniversityRan2020 to 2020Enrolled28ConditionsDental CariesArmsActive Probiotic, Placebo Probiotic
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 17 citations in OpenAlex.

  1. Unveiling the dual nature ofFrontiers in oral health · 2025
    Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. The Impact ofMicroorganisms · 2024
    Review
  11. Biofilm · 2023
    Article
  12. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Sahal AlforaidiDepartment of Cariology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. dr.sahal.sweden@hotmail.com.
Andrea BresinSpecialist Clinic of Orthodontics, Public Dental Service, Region Västra Götaland, Gothenburg, Sweden.
Naif AlmosaDepartment of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Anna LehrkinderDepartment of Cariology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Peter LingströmDepartment of Cariology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
University of Gothenburg · SEKing Saud University · SAPublic Dental Service Västra Götaland · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of the study was to investigate the effect of probiotics on biofilm acidogenicity and on the number of salivary Streptococcus mutans and lactobacilli in orthodontic patients.

methodsThis RCT was conducted on 28 young adults who were undergoing orthodontic treatment. The short-term prospective clinical trial lasted for three weeks. The test group rinsed daily with drops containing two Lactobacillus reuteri strains diluted in water, while the placebo group used drops without probiotics. The subjects were enrolled eight months since the beginning of orthodontic treatment. Plaque-pH, saliva and dental biofilm samples were obtained at baseline, one week and three weeks post intervention.

resultsTwenty-seven subjects successfully completed the trial period, only one drop out in the test group. No side effects were reported. A statistically significant increase in plaque pH at three weeks post-intervention was found for the test group (p < 0.05), while insignificant changes in the pH value were found for the placebo group in comparison to baseline (p > 0.05). In addition, the AUC CONCLUSION/CLINICAL IMPLICATIONS: A mixture of Lactobacillus reuteri has the ability to reduce the pH fall at the three-week follow-up. However, the short-term use of probiotics does not appear to have an effect on the number of salivary Streptococcus mutans and lactobacilli in saliva and on the dental biofilm.

trial registrationClinicaltrial.gov (Identifier: NCT04593017 / (19/10/2020)).

Indexed as

AntibiosisDental Caries SusceptibilityAdultDental PlaqueHumansHydrogen-Ion ConcentrationLactobacillalesLimosilactobacillus reuteriOrthodonticsSalivaStreptococcus mutansYoung AdultDental biofilmDental plaque. Lactobacillus reuteri (L. reuteri)Plaque pHProbiotics. SalivaQuantitative polymerase chain reaction (qPCR)Streptococcus mutans (S.mutans)

Identifiers

PMID34615458
PMCPMC8496079
OpenAlexW3204576702

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.