Ni Ti Instruments in endodontics

Ni Ti Instruments in Endodontics

Advantages :-

•          Reduced instrumentation time.

•           Simplified RC preparation.

Disadvantages  of stainless steel files :-

•          Increased canal blockage &         Instrument breakage

•           Insufficient canal debridement

Stainless Steel Files: Shortcomings

L Increased Time of  Canal Preparation

L Made Obturation Less Predictable

L Canal Transportation due to Design

L Excessive Dentine Removal

Nickel Titanium Rotary Instruments

Genesis

•           Nickel Titanium Naval                    Ordinance Lab. (NITINOL)

•           Property - ‘Superelasticity’                          (1960)

Tapered Preparation                     

•          Improved cleaning ability

•          Enhanced apical control of instruments

•          Less dependable on exact length determination

•          More dependable apical resistance

•          Greater confidence of cone fit

•          0.02 Taper

•           0.06 Taper