Ni Ti Instruments PROTAPER SYSTEM

Protaper

3 shaping files  :-

                Sx auxillary shaping files

                S1

                S2

3 finnishing files :-

                F1

                F2

                F3

SX - Shaper X

•          No Identification Ring on its Au-colored Handle

•          D₀                 --Diameter is 0.19 mm

•          D₁₄--Diameter is 1.20 mm

•          D₀---D₉----- Faster Rate of Taper

•          Modified Guiding Tip

S1

•          Purple identification ring

•          D₀--Diameter  is  0.17mm

•          Coronal 1/3_rd of canal.

S2

•          White identification ring

•          D_o--Diameter is 0.20mm

•          Middle 1/3_rd of canal

Finishing Files - F1, F2, F3

•          Yellow, Red ,Blue Identification rings for F1, F2 & F3 resp.

•          F1 D₀--D₃-- 7% Taper

•          F2 D_o--D₃-- 8% Taper

•          F3 D_o--D₃-- 9% Taper

Profile System - A new Niti Instruments

Profile System

Radial- Landed Flute & U-File Design

a  Shaping Coronal Portion of Canal

a  Manipulate in Difficult Access Area

a  60 degree Bullet-Nosed Tip

a  Cutting Angle 90 degree

a  Planes the Wall without Gouging & Self Threading

a  Even Stress Distribution

Benefits :-

J Improves Flexibility & Cutting  ,efficiency in Tighter or more Curved Canal.

J Fewer Files needed.

J Reduces Torsional Load , File Fatigue                 and Potential Separation.

J Reduces Contact Area between File and Dentine.

Niti Continued

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

Immediate Implant placement

Immediate Implant placement

RVG before implant placement with root piece with upper right central incisor .

Immediately after the placement of implant

Avulsion

Extraction site after avulsion of deciduous teeth due to trauma

Trauma to four year old child leading to exfoliation of decicuous left central incisor along with the injury to right deciduous central incisor .This RVG shows that injury might have extended upto permenent left central inciosr tooth bud . 

Todays case with root canal treatment

This is left mandibular first molar immediately after obturation with temporary restoration with zinc oxide eugenol cement with grade I furacation involvement.