Patent ID: 8021391
Filing Date: 2011-09-20
Classification: A61J

Abstract:
1. A tooth-hardening apparatus for a teething infant, comprising: a plate shaped first tooth-hardening member having an upper surface and a separate lower surface, at least one of the surfaces being provided with a plurality of projections, wherein the plate lies in a plane; and a plate shaped second tooth-hardening member having an upper surface and a separate lower surface, at least one of the surfaces being provided with a plurality of projections; wherein the plate shaped second tooth-hardening member is arranged at a periphery of the first tooth-hardening member and is extended from the periphery of the plate shaped first tooth hardening member in the plane in which the plate shaped first tooth hardening member lies, the upper and lower surfaces of the first tooth-hardening member and the upper and lower surfaces of the second tooth-hardening member are formed of respective materials which have hardnesses different from each other, and wherein the harder surface of the first tooth-hardening member is harder than the harder surface of the second tooth-hardening member which is arranged at the periphery of the first tooth-hardening member, and both the first and second tooth-hardening members are adapted to be chewed by the infant.