Dental cord using nanofiber conjugate yarn, and manufacturing method therefor

Abstract

Provided is a dental cord using a nanofiber multiple yarn having a large specific surface area and a large number of three-dimensional pores, thereby effectively impregnating a drug such as a hemostatic agent, and a method of manufacturing the dental cord. The dental cord includes: a nanofiber multiple yarn which is obtained by plying and twisting at least two nanofiber tape yarns and which is impregnated with a drug, wherein the at least two nanofiber tape yarns are integrated by nanofibers made of fiber moldability polymer materials and having an average diameter of less than 1 μm, to thus be formed of a nanofiber web having three-dimensional micropores.

Description

TECHNICAL FIELD[0001]The present invention relates to a dental cord and a method of manufacturing the same, and more particularly, to a dental cord using nanofiber multiple yarns and a method of manufacturing the same.BACKGROUND ART[0002]Gingival retraction is a technique that accurately models the shape of the teeth hidden in the gingiva when modeling a gold or porcelain impression, in dental clinics in which a gingival retraction cord of slender yarns is inserted between the teeth and the gums, that is, in the gingival sulcus, to temporarily retract the gums from the teeth, without causing damages on the gums.[0003]Gingival retraction cords (dental cords) are made of textile materials such as wools, cottons, or silks, and are classified into twisted cords, braided cords and knitted cords depending on the shape and degree of kinking.[0004]These dental cords (gingival retraction cords) exhibit some differences depending on products, and are represented by ultrathin (#0), thin (#1), ...

AI Technical Summary

Benefits of technology

[0020]As described above, the dental cord using the nanofiber multiple yarn according to the present invention has a relatively small diameter of the fiber compared to that of a conventional material, and thus has a large specific surface area and a large number of three-dimensional pores, to accordingly effectively impregnate a drug such as a hemostatic agent by using the nanofiber multiple yarn. As a result, applying such a dental cord effectively achieves a hemostatic and gingival contraction (convergence) effect when the gingiva is opened.

[0021]In addition, according to the present invention, the tensile strength, elasticity, and thickness of a fiber can be easily adjusted even when the dental cord is not made into a knitted type yarn form by twisting only a nanofiber tape yarn alone or multiplying a nanofiber tape yarn and a natural fiber, to effectively manufacture a 2-ply twisted yarn and a 3-ply twisted yarn.

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Problems solved by technology

However, in the case of the conventional dental cord disclosed in Patent Document 1, the use of natural fibers such as cotton, silk, and wool may cause the gingival sulcus to be excessively opened or permanently opened by the thickness of the fibers of tens to hundreds of micrometers (μm), and may tend to cause the excessive use of the drug of hemos

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