Time Dependent Professional Toothbrushing Study (timebrush)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00877019
Recruitment Status : Completed
First Posted : April 7, 2009
Last Update Posted : April 7, 2009
Information provided by:
University of Erlangen-Nürnberg Medical School

Brief Summary:


The study was designed to test the time dependent efficacy in plaque removal of four toothbrushes: one electric toothbrush, the Philips Sonicare Elite with long (A) and short (B) brushing head and two manual brushes, the Gaba Sensitve (C), and the ADA reference brush (D) and.

Materials and Methods:

The study was a single-blind, randomized clinical timer study consisting of four identical experiments testing each brush in one quadrant. The distribution of the quadrants and brushes was randomized so that always all brushes were used within one participant. The teeth were brushed by a dental hygienist for 10, 20, 30, 45, 60 und 90 seconds per quadrant. No toothpaste was used throughout this study. The plaque assessment (Tureskey modified QHI) was done after each time interval blinded on six sites per tooth by a separate investigator. Ninety subjects participated in the study and received a professional prophylaxis prior to the experiment. They were requested to refrain from brushing their teeth for 48 hours prior to the experiment.

Condition or disease Intervention/treatment Phase
Toothbrushing Device: Sonicare elite medium brush head Device: Sonicare elite mini brushhead Device: GABA Elmex sensitive extra soft toothbrush Device: ADA reference toothbrush Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 90 participants
Allocation: Randomized
Masking: Single (Investigator)
Primary Purpose: Treatment
Official Title: Time Dependent Professional Toothbrushing Study Comparing Sonicare With Manual Toothbrushes
Study Start Date : August 2007
Actual Primary Completion Date : December 2007
Actual Study Completion Date : December 2007

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Ages Eligible for Study:   18 Years to 35 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • at least 24 evaluable teeth in the mouth

Exclusion Criteria:

  • systemic disease
  • regular drugs or actual antibiotics
  • orthodontic banding or retention wires
  • oral lesions or sites with a probing pocket depth X5 mm

Responsible Party: PD Dr. M. PElka, Dental Clinic 1 - Operative Dentistry and Periodontology, University of Erlangen-Nürnberg Identifier: NCT00877019     History of Changes
Other Study ID Numbers: 001
First Posted: April 7, 2009    Key Record Dates
Last Update Posted: April 7, 2009
Last Verified: April 2009

Keywords provided by University of Erlangen-Nürnberg Medical School:
sonic brushes
time effectiveness
brush head design
professional brushing
time dependence