PROTAPER

Protaper means progressive taper to improve flexibility and cutting efficiency. The change percentage of taper over the length of cutting blades adds to its unique feature. Variable tip diameters of protaper file allow it to have specific cutting action in defines arear of the canal without stressing instrument in other sections. The helical change angle over its cutting blades reduces the instrument from screeing into the canal and allows better removal of debris. It works on the principle of active motion which increases its efficiency and reduces torsional strain. Length of protaper reduced from 15 to 12.5mm for better access in the posterior region.

Niti protaper has 55% nickel and 45% titanium which has an advantage on shape memory, superelasticity, low modules of elasticity, corrosion-resistant, softer, good resiliency and biocompatibility. The protaper system consists of just three shaping and five finishing files.

Sx-orange coloured handle and use for the shaping of the orifice.

S1-purple coloured ring and used to prepare coronal part of the root.

S2-white coloured ring and used to prepare middle 1/3rd of the canal.

F1-yellow coloured ring and used to prepare apical third of the canal.

F2-red coloured ring and prepare apical third of the canal.

F3-blue coloured ring on the handle and used to prepare apical third of the canal.

F4-black coloured ring on the handle and used to prepare the apical 1/3rd of the canal.

F5-double yellow coloured ring and use to prepare apical 1/3rd of a canal.

There is retreatment protaper file also in protaper system which is a new edition in the treatment.

D1-11mm handle 16mm cutting surface,9% taper and for coronal filling removal.

D2-11mm handle,18mm cutting blades,8% taper and for middle filling removal.

D3-11mm Handle,22mm Cutting Blade,7%Taper and for apical filling removal.

Protaper gold is those with increased flexibility, greater resistance to cyclic fatigue and shorter handle of 11mm.Rotary protaper Niti files simplify root canal preparation, particularly in curved and restricted canals and their recommended speed is 15-350rpm.

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