| 摘要 |
Oral hygiene implements, such as manual or electric toothbrushes or refills, include a head portion sized for insertion into a human mouth that includes a base and a plurality of elastomeric elements extending from the base to define a field of elastomeric bristles. The field can include a first elastomeric element that includes a first elastomeric material and a second elastomeric element different than the first elastomeric element that includes a second elastomeric material. The elastomeric elements extending from the base can define many "sharp," yet compliant edges, such as those having a tip radius of less than about 0.006 inch, for enhanced cleaning with reduced abrasion.
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