CClinicalTrials.gg
CompletedNCT04119583Updated Mar 24, 2020

Efficacy of an U-shape Automatic Electric Toothbrush in Plaque Removal

An interventional study of U-shape Automatic Electric Toothbrush and Usual home toothbrushing procedure in Dental Plaque and Toothbrushing, sponsored by University of Florence. Completed at 1 site in Italy. Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-03-24.

Sponsored by University of Florence · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
22
Allocation
Randomized
Ages
18 Years to 30 Years
Sex
All
01

Study summary

Over time, many different types of manual and electric toothbrushes have been produced. A systematic review has shown that some electric toothbrushes are more effective at removing bacterial plaque than manual toothbrushes. A new U-shaped electric toothbrush with silicone bristles has recently been produced that has a fully automatic and simultaneous action on both arches. However, its efficacy in removing bacterial plaque is not clear at the moment, as no randomized study has been published on this type of toothbrush.

The aim of this study is to compare the efficacy in terms of bacterial plaque removal in a single use of a new automatic U-shaped electric toothbrush, compared with the usual home toothbrushing procedure, a conventional electric toothbrush, and negative control (no toothbrushing) in a group of volunteer students of the School of Dentistry of the University of Florence, Italy.

Primary endpoint will be the difference in "full mouth plaque score" between before and after brushing. Secondary endpoints will be feeling of "clean mouth" evaluated on a VAS (Visual Analogue Scale) scale from 0 to 10 where 0 indicates no feeling of clean mouth and 10 maximum feeling of clean mouth.

This study will be a monocentric, randomized, controlled, superiority, cross-over study, with blind examiner and 4 therapies (U-shaped electric toothbrush, usual home toothbrushing procedure, conventional electric toothbrush, no toothbrushing), carried out in a single session with an interval of one week between the 4 therapies.

Study population will be students of the School of Dentistry who are healthy volunteers. Number of patients to be enrolled: 22. Inclusion criteria: age between 18 and 30 years; no fixed orthodontic appliance; presence of at least 20 teeth; Full mouth plaque score (FMPS) above 40%.

Exclusion criteria: subjects with manual disabilities to perform normal oral hygiene maneuvers; subjects allergic to silicone.

02

Conditions studied

  • Dental Plaque
  • Toothbrushing

Browse trials for

03

In context

Dental Plaque

314 studies on the registry are indexed under Dental Plaque; 55 are open to participants now.

This study's enrollment of 22 is below the median of 59 across 279 interventional studies indexed under Dental Plaque.

Browse Dental Plaque studies →

Lead sponsor

University of Florence is the lead sponsor of 75 studies on the registry; 18 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 30 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Age between 18 and 30 years;
  • no fixed orthodontic equipment;
  • presence of at least 20 teeth;
  • Full mouth plaque score (FMPS) above 40%.

Exclusion criteria

Exclusion Criteria:

  • Subjects with manual disabilities to perform normal oral hygiene maneuvers;
  • Subjects allergic to silicone
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Outcomes assessor)
Enrollment
22 participants (actual)

Study arms

  • Experimental
    U-shape Automatic Electric Toothbrush

    Device: U-shape Automatic Electric Toothbrush

  • Active comparator
    Usual home toothbrushing procedure

    Other: Usual home toothbrushing procedure

  • No intervention
    No toothbrushing
  • Active comparator
    Conventional Electric Toothbrush

    Other: Conventional Electric Toothbrush

Interventions

  • DeviceU-shape Automatic Electric Toothbrush

    The U-shape Automatic Electric Toothbrush will be applied for 30-45 seconds on the teeth of both arches without the use of toothpaste.

  • OtherUsual home toothbrushing procedure

    Usual home toothbrushing procedure either with manual or electric toothbrush without the use of toothpaste.

  • OtherConventional Electric Toothbrush

    The Conventional Electric Toothbrush will be applied for 2 minutes on the teeth of both arches without the use of toothpaste.

06

What researchers measure

Primary outcomes

  1. Full mouth plaque score

    Percentage of sites that presents with plaque on the total of the sites examined (6 sites per tooth).

    Time frame: Difference between pre- and post-brushing (time frame 10-15 minutes)

Secondary outcomes

  1. Feeling of "clean mouth"

    Visual analogue scale from 0 to 10 where 0 indicates no feeling of clean mouth and 10 maximum feeling of clean mouth

    Time frame: Post-brushing (time frame 1-2 minutes)

07

Study locations

1 site
  • SOD Odontostomatologia
    Firenze, 50127, Italy
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 24, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04119583
Lead sponsor
University of Florence
Responsible party
Lorenzo Franchi (Associate Professor in Dentistry, University of Florence) — Principal investigator
First posted
Oct 8, 2019
Start date
Jan 20, 2020
Primary completion
Feb 14, 2020
Completion
Feb 14, 2020
Last update
Mar 24, 2020

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion