What is NiTi Endo?
The NiTi rotary file is an engine-driven tapered and pointed niti instruments in endodontics made of nickel-titanium alloy with cutting edges used to mechanically shape and prepare the root canals during endodontic therapy or to remove the root canal obturating material while performing retreatment.
What is M wire technology?
The M-wire was introduced in 2007, and is essentially a thermally processed NiTi alloy that is stable at body temperature. It was developed via thermo-mechanical processing and contains three crystalline phases: deformed and micro-twinned martensite, R-phase, and austenite (6) .
What is ProTaper next?
The ProTaper NEXT (PTN) System provides shaping advantages through the convergence of a variable tapered design on a given file (ProTaper Universal), innovative M-Wire technology, and a unique offset mass of rotation (as developed by Dr. Michael J. Scianamblo and the Dentsply International team).
How many times a rotary file can be used?
The results of this study indicate that ProTaper rotary files may be safely reused at least four times.
What is tug back?
Tug-back is defined as a slight frictional resistance of a master point to withdrawal, which indicates a relative degree of adaptation at least in 2 dimensions, according to the American Association of Endodontists [6].
What is a master cone?
Customized master cones represent a change in concept: rather than instrumenting the root canal to fit the shape of a round, industrial, master cone, a cone is prepared to fit the shape of the ready-to-fill canal.
What should be the speed for Endomotor?
An endomotor with speed and torque control is necessary to have complete control over instrumentation. The usual speed range that is employed in endodontics is between 150 and 650 rpm.
What is M-Wire NiTi?
Significance: M-Wire presented mechanical properties that can render endodontic instruments more flexible and fatigue resistant than those made with conventionally processed NiTi wires.
What is NiTi in dentistry?
INTRODUCTION. In the early 1990s, the use of nickel-titanium (NiTi) alloy to manufacture engine-driven instruments for shaping root canals moved endodontics to a different level.
How do you sterilize rotary files?
There are various methods to sterilize these instruments, such as dry heat sterilizer, autoclave, ethylene oxide gas, glass-bead sterilizer or hot-salt sterilizer, etc….Aims and Objectives
- Autoclaving.
- Carbon dioxide laser sterilization.
- Chemical sterilization (with glutaraldehyde)
- Glass-bead sterilization.
When should you discard rotary files?
It is a result of a repetitive bending motion, similar to bending a clothes hanger. Cyclic fatigue accumulates to a point where the next bend will separate the instrument. The only way to monitor cyclic fatigue is to discard an instrument after it has been used in a troublesome canal or tooth.
What is master cone?
master cone that has the size, shape and taper of the last. instrument that was used in the canal. Such cones are. used under the assumption that they can be used either. as a single cone or with very little required lateral.
What is tug-back?
What is apical puff?
Apical puffs are the result of over-extension of filling materials, and can be observed in the presence of severe apical lesions. This calls for materials, which are able to hermetically fill the root canals while being resorbable when accidentally overextruded into tissues other than the root canal system.