As for topic of this invention, arranging the optional plural books, dentaruhurosu it is possible to stretch, it is to offer the method of installing dentaruhurosuhoruda, and dentaruhurosu which looseness is difficult to occur in Hari. Method of installing dentaruhurosu of this invention has the below-mentioned procedure. Procedure 1: Making beginning aforementioned dentaruhurosu 3 slit bite 11, you stop. Procedure 2: dentaruhurosu which stops in this slit paralleling to the guide groove 15, it passes by the apex on the one hand of branch and 7 winds in vertical full circuit. Procedure 3: dentaruhurosu which is wound in this guide groove, is wound around the groove 17 for the 1st volume attaching on the one hand of the branch. Procedure 4: After stringing dentaruhurosu which is wound around the groove for this 1st volume attaching, in forked sections 5, it winds around the groove 19 for the 2nd volume attaching of the other branch. Procedure 5: dentaruhurosu which is wound around the groove for this 2nd volume attaching, the person in charge is made to stop to the groove 21 for person in charge stopping which is the abbreviation center of the forked sections. Procedure 6: The person in charge making end of dentaruhurosu which is stopped, slit bite 11 in the groove for person in charge stopping, you stop.本発明の課題は、デンタルフロスを任意の複数本を並べて張ることができ、張りに緩みが生じにくいデンタルフロスホルダー、及びデンタルフロスの取り付け方法を提供することである。本発明のデンタルフロスの取り付け方法は下記手順を有する。手順1:スリット11に前記デンタルフロス3の始めをかませて止める。手順2:このスリットに止められたデンタルフロスを案内溝15に沿って、一方の枝部7の頂部を通り縦全周に巻く。手順3:この案内溝に巻いたデンタルフロスを、一方の枝部の第1巻付用溝17に巻き付ける。手順4:この第1巻付用溝に巻き付けたデンタルフロスを、二股部5に張り渡した後に、他方の枝部の第2巻付用溝19に巻き付ける。手順5:この第2巻付用溝に巻き付けられたデンタルフロスを、二股部の略中央の係止用溝21に係止させる。手順6:係止用溝に係止したデンタルフロスの終わりを、スリット11にかませて止める。
