초록 ▼

A dental hygienic device comprising an n-type semiconductor disposed on or in a main body consisting of an inserting portion and a handle. At least one portion of the semiconductor is exposed while at least the other portion being located at the inserting portion of said main body. The semiconductor

A dental hygienic device comprising an n-type semiconductor disposed on or in a main body consisting of an inserting portion and a handle. At least one portion of the semiconductor is exposed while at least the other portion being located at the inserting portion of said main body. The semiconductor, when irradiated with a natural and/or man-made light, is activated to produce therein a number of holes whereas teeth becomes reverse-phased due to an electron density higher than that in the semiconductor to thereby give rise to a reduction which decompose tartars and colored scales on the teeth.

대표청구항 ▼

A dental hygienic device for the hygienic treatment of teeth in an oral cavity, said device comprising a main body having an insertion portion adapted to be brought into an operative position relative to water and/or saliva in the oral cavity, and semiconductor means consisting essentially of an n-t

A dental hygienic device for the hygienic treatment of teeth in an oral cavity, said device comprising a main body having an insertion portion adapted to be brought into an operative position relative to water and/or saliva in the oral cavity, and semiconductor means consisting essentially of an n-type semiconductor material having a photoelectric effect, said semiconductor means including at least one portion disposed relative to said insertion portion so as to be simultaneously exposable to light and operatively communicable with the water and/or saliva of the oral cavity, said semiconductor means, in response to irradiation by light, for establishing at said one portion an electron density differential between said teeth and said semiconductor means to cause a reduction to occur at said teeth to thereby hygienically treat said teeth.