title: Hard tissue abrasivity of an automatic interdental plaque remover.
abstract: This laboratory study was conducted to assess the safety of a new interdental cleaner, the Braun Oral-B Interclean (ID2), by measuring its abrasivity to dentin and comparing this with the abrasivity of a standard ADA manual toothbrush when used with and without dentifrice. Dentin abrasion was measured by a radioactive technique, using a modified ADA-recommended methodology. Dentin specimens to be used with the ID2 had a 2 mm hole drilled through them to represent the interproximal space, whereas dentin slabs were used in the toothbrush abrasivity tests. All specimens were placed in a controlled neutron flux. The dentin specimens were then immersed either in an abrasive dentifrice (Crest) slurry or a non-abrasive (water) solution, and an 8.5 minute treatment carried out. After testing, samples of treatment slurry or solution were put in a scintillation counter and mean net counts per minute (cpm) per gram of slurry or solution were calculated. With Crest dentifrice, the ID2 removed significantly less (p < or = 0.05) dentin (232 cpm/g) than the ADA reference manual toothbrush (789 cpm/g). Without dentifrice, neither the ID2 nor the manual toothbrush removed significant amounts of dentin, and dentin loss was similar for both devices.
authors.affiliation: Oral Health Research Institute, Indiana University School of Dentistry, Indianapolis, USA.
authors.forename: B R
authors.initials: BR
authors.lastname: Schemehorn
authors.forename: A C
authors.initials: AC
authors.lastname: Zwart
mesh_terms: D000704:Analysis of Variance; D003742:Dental Devices, Home Care / Q000009:adverse effects*; D003773:Dental Plaque / Q000517:prevention & control; D003802:Dentifrices; D003804:Dentin / Q000293:injuries*; D004560:Electricity; D006801:Humans; D009910:Oral Hygiene / Q000295:instrumentation*; D014072:Tooth Abrasion / Q000209:etiology*; D014099:Toothbrushing / Q000295:instrumentation
chemical_list: D003802:Dentifrices