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Related Experiment Video

Updated: Jul 4, 2026

Impact of Common Fruit Juices and Toothbrushing on the Discoloration of Primary Teeth
04:40

Impact of Common Fruit Juices and Toothbrushing on the Discoloration of Primary Teeth

Published on: March 27, 2026

Electric vs Manual Toothbrushing Effects on QLF-Assessed Plaque in Smokers and Non-Smokers: A 24-Week RCT.

Andrea Di Stefano1, Debora Gangi1, Giusy Rita Maria La Rosa2

  • 1Addendo Srl., Dental Clinic, Catania, Italy.

International Dental Journal
|July 2, 2026
PubMed

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Summary

An oscillating-rotating electric toothbrush significantly reduced plaque more than a manual toothbrush over 24 weeks. This electric toothbrush offers an advantage for adult patients in plaque reduction.

Area of Science:

  • Dental hygiene
  • Biomaterials science
  • Clinical research

Background:

  • Electric toothbrushes generally outperform manual ones in plaque removal.
  • Previous studies often used subjective measures and did not analyze efficacy across smoking groups.
  • Objective fluorescence-based measurement for toothbrush efficacy is underutilized.

Purpose of the Study:

  • To compare the plaque removal efficacy of an oscillating-rotating electric toothbrush versus a manual toothbrush.
  • To evaluate efficacy across different smoking profiles using quantitative light-induced fluorescence (QLF).
  • To assess plaque accumulation over a 24-week period.

Main Methods:

  • A 24-week randomized controlled trial involving 126 adults (18-50 years).
  • Comparison between an oscillating-rotating electric toothbrush (Oral-B iO 6) and a manual toothbrush.
Keywords:
Dental plaqueElectric toothbrushQuantitative light-induced fluorescenceRandomized controlled trialSmoking

Related Experiment Videos

Last Updated: Jul 4, 2026

Impact of Common Fruit Juices and Toothbrushing on the Discoloration of Primary Teeth
04:40

Impact of Common Fruit Juices and Toothbrushing on the Discoloration of Primary Teeth

Published on: March 27, 2026

  • Plaque quantified using quantitative light-induced fluorescence (QLF); primary endpoint ΔR30 (mature plaque).
  • Subgroup analysis based on smoking status (smokers vs. never-smokers).

    • Main Results:

    • The electric toothbrush group showed significantly lower ΔR30 (mature plaque) at 24 weeks compared to the manual group (p=.012).
    • No significant difference was found for ΔR120 (thick plaque/calculus-like deposits) (p=.112).
    • Significant differences favoring the electric toothbrush were observed in never-smokers; trends were consistent but not significant in smokers.

    Conclusions:

    • Oscillating-rotating electric toothbrushing significantly reduces plaque accumulation compared to manual brushing over 24 weeks.
    • Findings support the advantage of this electric toothbrush type for plaque reduction in adults.
    • Quantitative light-induced fluorescence (QLF) is a precise and reproducible tool for toothbrush efficacy trials.