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The effect of different interdental cleaning devices on plaque biofilm and gingival bleeding.


- candidate number6539
- NTR NumberNTR2038
- ISRCTNISRCTN wordt niet meer aangevraagd.
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR29-sep-2009
- Secondary IDs09/198 MEC
- Public TitleThe effect of different interdental cleaning devices on plaque biofilm and gingival bleeding.
- Scientific TitleThe effect of different interdental cleaning devices on plaque biofilm and gingival bleeding.
- ACRONYMN/A
- hypothesisThe present study aims at testing whether the Waterpik® DWJ with a new jet tip has a potential to improve gingival health and plaque inhibition as compared to the Waterpik® DWJ with a standard jet tip or use of standard waxed floss over a period of 4 weeks.
- Healt Condition(s) or Problem(s) studiedGingivitis
- Inclusion criteria1. ≥18 years of age;
2. A minimum of 5 evaluable teeth in each quadrant (with no partial dentures, orthodontic banding or wires) and  50% bleeding on marginal probing.
- Exclusion criteria1. Oral lesions and/or periodontal pockets >5 mm;
2. Pregnancy or systemic diseases such as diabetes.
- mec approval receivedyes
- multicenter trialno
- randomisedyes
- masking/blindingSingle
- controlActive
- groupParallel
- Type2 or more arms, randomized
- Studytypeintervention
- planned startdate 22-sep-2009
- planned closingdate29-okt-2009
- Target number of participants105
- InterventionsAt baseline, 2 weeks, 4 weeks:
1. One group will use: Waterpik® DWJ with a new jet tip + ADA toothbrush / regular toothpaste (test);
2. Another group will use: Waterpik® DWJ with a standard jet tip + ADA toothbrush / regular toothpaste (control);
3. A third group will use standard waxed floss + ADA toothbrush / regular toothpaste (control).
- Primary outcomePLAQUE (Quigley & Hein, 1962) This score will be scored at baseline, after 2 weeks and at the final examination (after 4weeks). Plaque is assessed after disclosing with Mira-2-Ton® (Hager & Werken GmbH & Co. KG. Duisburg, Germany), using the Turesky (Turesky et al.1970) modification of the index (Quigley & Hein 1962) scored at six sites per tooth as suggested by Lobene et al. (1982) where the absence or presence of plaque is recorded on a scale 0-5 (0=no plaque, 5=plaque covered more than two-thirds of the tooth surface).
- Secondary outcomeBLEEDING ON MARGINAL PROBING (BOMP, Van der Weijden 1994). This score will be scored at baseline, after 2 weeks and at the final examination (after 4weeks). The gingiva is lightly dried with compressed air and lightly probed with a probe. The probe is inserted into the gingival crevice to a depth of approximately 2mm or until slight resistance is felt. The probe is run gently along the marginal gingival holding the probe at a an angle of approximately 60 degrees to the longitudinal axis of the tooth and in contact with the sulcular epithelium. Minimum axial force is used to avoid undue penetration in the tissue. The probe is moved around the crevice gently stretching the epithelium. A bleeding score is given to six gingival areas of the tooth. These are the disto-vestibular, vestibular, mesio-vestibular, disto-lingual, lingual and the mesio-lingual regions.

VAS-QUESTIONAIRE Results from the VAS questionnaire to evaluate the subject’s attitude after the final examinations towards to the used products.
- TimepointsWeek 0, 2 weeks, 4 weeks.
- Trial web siteN/A
- statusopen: patient inclusion
- CONTACT FOR PUBLIC QUERIESDr. G.A. Weijden, van der
- CONTACT for SCIENTIFIC QUERIESDr. G.A. Weijden, van der
- Sponsor/Initiator ACTA-ADR
- Funding
(Source(s) of Monetary or Material Support)
GlaxoSmithKline, Water Pik Technologies, Inc.
- PublicationsN/A
- Brief summaryBackground of the study:
As gingivitis and periodontitis are usually more pronounced in the interdental areas than on the oral or facial surfaces in susceptible patients, the removal of plaque from these surfaces is very important.Therefore various adjuncts to plaque control have been developed such as dental floss, toothpicks and interdental brushes. However, daily interproximal plaque control is not a regular behavior. A common problem with all interdental cleaning aids is patient dexterity and motivation. Additional oral hygiene aids have been developed in an attempt to augment the effect of toothbrushing on reducing interdental plaque. A dental water jet or oral irrigator is an electric device which aims at the removal of plaque, both interdentally and along the gumline, to increase the performance of the oral hygiene and thus to improve the gingival health.

Objective of the study:
The present study aims at testing the adjunctive effect to toothbrushing of the Waterpik® dental water jet (DWJ) with a new jet tip in the potential to remove plaque biofilm and improve gingival health as compared to the Waterpik® dental water jet with a regular jet tip, and to the use of dental floss.

Study design:
The study is randomized, single blind, 3-group parallel, 30 day home use model combined with the use of a regular flat trimmed manual toothbrush (ADA) together with a standard dentifrice. Subjects will be randomly assigned to one of 3 groups according to a randomization list. During the 30-day experimental phase subjects in the test group will use the Waterpik® dental water jet with a new jet tip (test product) once a day in the evening. Subjects in the control group will use the Waterpik® dental water jet (DWJ) with a standard jet tip once a day in the evening. Subjects in the negative control group will use standard waxed dental floss once a day in the evening. To check for compliance, subjects are asked to register the time of use of the products onto a calendar record chart. After meeting the inclusion criteria and completing informed consent subjects will be assessed for the first time (S1) for their baseline data for both indices. First gingivitis and secondly plaque according to the above described procedures. Subsequently each subject will receive a demonstration and verbal instruction from the study coordinator immediately following the screening assessment. At this moment subjects will use their allocated product for the first time. At 14 days (S2), subjects return to the clinic for the clinical assessments for both gingivitis and plaque. At 30 days (S3), again subjects return to the clinic for their final assessment for both parameters. Finally, after the last assessment, all subjects will receive a questionnaire using a visual analogue scale (VAS) designed to evaluate their attitudes with regard to the product used.
- Main changes (audit trail)
- RECORD29-sep-2009 - 7-nov-2012


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