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Efficacy of an Automatic Toothbrush

Efficacy of an Automatic Toothbrush With Nylon Bristles in Removing Dental Plaque: a Randomized Cross-over Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05594134
Enrollment
25
Registered
2022-10-26
Start date
2022-11-07
Completion date
2022-12-21
Last updated
2023-04-18

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

Conditions

Dental Plaque

Brief summary

The objective of this study is to compare the efficacy in terms of bacterial plaque removal, in a single use, of a new Y-shaped automatic electric toothbrush with nylon bristles, compared with the electric toothbrush of similar shape but with silicone bristles, with the manual toothbrush, and with a negative control (no brushing) in a group of volunteer students. Primary endpoint: difference in full mouth plaque score between before and after brushing. Secondary endpoint: sensation of clean mouth assessed on VAS scale from 0 to 10 where 0 indicates no sensation of clean mouth and 10 maximum sensation of clean mouth. Single-center, randomized, controlled, superiority, cross-over, examiner-blinded study with 5 treatments (Y-shaped electric toothbrush with nylon bristles, similarly shaped electric toothbrush with silicone bristles, manual brushing for 45 seconds, manual brushing for 2 minutes, no brushing), carried out in a single session and spaced one week apart.

Interventions

OTHERAutomatic toothbrush with nylon bristle

The automatic toothbrush with nylon bristles will be used for 10 seconds per dental arch

OTHERAutomatic toothbrush with silicone bristle

The automatic toothbrush with silicone bristles will be used for 10 seconds

OTHERManual toothbrush used for 2 minutes

A conventional manual toothbrush will be used for 2 minutes

OTHERManual toothbrush used for 45 seconds

A conventional manual toothbrush will be used for 45 seconds

Sponsors

University of Florence
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes

Inclusion criteria

* Absence of fixed orthodontic appliances * Presence of at least 20 teeth * Full mouth plaque score greater than 40% * Having provided signed and dated informed consent.

Exclusion criteria

* Subjects with manual inability to perform normal oral hygiene maneuvers * Subjects allergic to silicone or nylon.

Design outcomes

Primary

MeasureTime frameDescription
Change in full mouth plaque score5 minutesDifference in full mouth plaque score between before and after brushing

Secondary

MeasureTime frameDescription
Perception of clean mouth5 minutesSensation of clean mouth assessed on a visual analogue scale from 0 to 10 where 0 indicates no sensation of clean mouth and 10 maximum sensation of clean mouth

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026