Files reamer 1234more

Differences between reamers and files Reamer 1234More flexible. Less n o. of flutes Used mainly in reaming action. File Less flexible. More n Less effective in filing action because less no. of flutes. 3) Spreader. o. of flutes Used mainly in filing action. Can be used in reaming action. It is a long, tapered and pointed end instrument, which is used to compress gutta percha into the apex and periphery of the prepared canal and also towards the irregularity of canals leaving a space for insertion of auxiliary root canal filling material cones. There is also a finger spreader which is smaller and shorter to be used in p osterior teeth. 4) Plugger. It is a long and blunt flat tip blade instrument. It is necessary for vertical condensation technique and also plugging of gutta percha at the termination of all other obturation condensation techniques. There are 2 types pluggers, the long handled type and finger type. Standardization of Intracanal Instruments: 0 of Each instrument has a number which refers to the size of its tip. The reamer of size 30 means that D = 0.3mm, while size 70 reamer means that D D 16 = D 0 + 0.32 mm So in size 50 reamer, the tip (D 0 ) is 0.5 mm 0 while D is 0.82 mm. The distance between D 0 and D 16 = 0.7mm. 16 is 16mm, but the total length differs from short to medium to long for anterior teeth, and the shorter ones for posterior teeth. All intrac anal instruments are colour coded and each colour represents a size. Pink= 6, Gray= 8, Purple= 10, White= 15, Yellow= 20, Red= 25, Blue= 30, Green= 35, Black= 40, then the colour returns to White= 45, and so on to Blue= 60 and then the instruments increase by 10 as Green=70, Black=80, and so onto size