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

The dental cord made with the nanofiber multiple yarn has a smaller fiber diameter, which allows it to have a larger surface area and more pores. This makes it easier to impregnate drugs like hemostatic agents. When applied to the gums, the dental cord can help stop bleeding and shrink the gums. The strength, flexibility, and thickness of the fiber can be easily adjusted, and the cord can be made without a knitted yarn form. The nanofiber tape yarn with many pores and hydrophilic natural fibers provides adequate elasticity and moisture absorption. The cord can be manufactured without special equipment or processes, making it simpler and more cost-effective. Additionally, existing manufacturing equipment can be used as is to further improve the handle-ability, mass productivity, and uniformity of the cord.

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 hemostatic agent, etc.

In addition, as shown in FIG. 1, since a filament is made in the form of spun yarns in order to make short fibers into long fibers, there were a disadvantage that a large amount of lint is generated, and a disadvantage that the filament should be made into a knitted type yarn by using special equipment in order to impart elasticity.

Images