Polymeric foam as chewable tooth cleaning device

Details Polymeric foam as chewable tooth cleaning device Polymeric foam as chewable tooth cleaning device

A - Human Necessities

61

C

167/317.3

A61C 15/00 (2006.01) A46B 11/00 (2006.01) A46D 1/00 (2006.01)

Patent

CA 1078739

ABSTRACT OF THE DISCLOSURE A chewable tooth cleaning device comprising from 2.45 to 9.0 cm3 of substantially closed-cell compressible polymeric foam having a substantially skin-free surface adapted to scrub exposed tooth surfaces. In particular, the polymeric foam has about 12 to 50 cells per linear centimeter, a water absorptivity of less than 1.0 mg/cm3 after being submerged in water for 24 hours, a ten- sile strength of at least 3.4 x 105 Pa, a compressive strength of at least 5.5 x 104 Pa at 10% deflection, and at least 8.3 x 104 Pa at 25% deflection, a tear strength of at least 1.38 x 105 Pa, and is sufficiently resilient to return to at least 90% of its uncompressed height almost immediately after being compressed to 10% of its uncompressed height. -1-

302657

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