Comparing the Inter-Dental Brush to Dental Floss

2014-08-27 03:28:02 | BioPortfolio


The study's purpose is to find an easy and effective alternative to dental floss for those persons who cannot or choose not to dental floss so that they can maintain and/or achieve optimal oral health. The study hypothesis is that the inter-dental brush is as effective as dental floss for removing plaque from between the teeth and for reducing bleeding gums in persons with gingivitis, but may be easier to use and thus encourage daily home use.



To determine if the interdental brush is just as effective at removing plaque and reducing bleeding gums between the teeth as dental floss.


Many people find dental floss difficult to use and thus, do not floss daily to maintain oral health and prevent gum disease. These individuals may find the interdental brush easier to use and may be motivated to use it daily for optimal oral health.

Study design:

Study subjects will use the dental floss AND the interdental brush for 12 weeks. Plaque and bleeding scores will be measured before the study begins (week 0), mid-way (week 6), and at the end of the 12 weeks. All study subjects receive a teeth cleaning prior to the first measurements and oral hygiene instructions on how to floss and use the interdental brush. Subjects will also answer 4 short questions about their product preference and ease of use.

Study subjects:

32 healthy adult volunteers with bleeding gums. To be included in the study, subjects require 8 bleeding sites, 4 areas that can accommodate the interdental brush, dexterity to dental floss, and willingness to come for 4 study visits. Exclusion criteria include smokers because this can affect the bleeding scores; individuals with braces (orthodontia) which affects plaque levels; individuals using chlorhexidine which is a prescription strength mouthwash used to treat moderate to severe gum disease; pregnant women; and those individuals requiring antibiotics prior to dental appointments. Enrolled study subjects receive a teeth cleaning (value $180), $75 for completing the study, and all study related supplies.

Study Design

Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Single Blind (Investigator), Primary Purpose: Prevention




IB = Interdental brush, the intervention, DF = Dental floss, the positive control


University of British Columbia Nobel Biocare Oral Health Centre
British Columbia
V6T 1Z3




University of British Columbia

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:28:02-0400

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An acute or chronic GINGIVITIS characterized by redness and swelling, NECROSIS extending from the interdental papillae along the gingival margins, PAIN; HEMORRHAGE, necrotic odor, and often a pseudomembrane. The condition may extend to the ORAL MUCOSA; TONGUE; PALATE; or PHARYNX. The etiology is somewhat unclear, but may involve a complex of FUSOBACTERIUM NUCLEATUM along with spirochetes BORRELIA or TREPONEMA.

A film that attaches to teeth, often causing DENTAL CARIES and GINGIVITIS. It is composed of MUCINS, secreted from salivary glands, and microorganisms.

Efforts to prevent and control the spread of infections within dental health facilities or those involving provision of dental care.

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A loss of mucous substance of the mouth showing local excavation of the surface, resulting from the sloughing of inflammatory necrotic tissue. It is the result of a variety of causes, e.g., denture irritation, aphthous stomatitis (STOMATITIS, APHTHOUS); NOMA; necrotizing gingivitis (GINGIVITIS, NECROTIZING ULCERATIVE); TOOTHBRUSHING; and various irritants. (From Jablonski, Dictionary of Dentistry, 1992, p842)

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