What is crown down technique?

What is crown down technique?

The Crown-Down technique involves the widening of the canal orifices with Gates-Glidden drills followed by the incremental removal of organic canal contents proceeding from the canal orifice to the apical portion using manual files. Files are used from larger to smaller with no apical pressure.

What is the step back technique?

step-back technique uses a combination of hand instruments (files) and rotary instruments (Gates- Glidden drills and Peeso reamers) to achieve adequate coronal flare before apical root canal preparation.

What does cleaning and shaping means in RCT?

The purpose of shaping is to 1) facilitate cleaning and 2) provide space for placing the obturating materials. The main objective of shaping is to maintain or develop a continuously tapering funnel from the canal orifice to the apex. This decreases procedural errors when cleaning and enlarging apically.

What is master apical file in RCT?

2002, Rollison et al. 2002, Saini et al. 2012). Weine (1972) defined the master apical file (MAF) size as enlarging the apical portion of the root canal system three sizes larger than the first file that bound at working length. This was accomplished after coronal flaring of the root canal system.

Why do we Obturate?

The clinical goal of endodontic obturation of a root-canal system is to fill empty spaces, promote hermetic sealing, and prevent bacterial activity from infiltrating the periapical tissues.

What are gutta percha points?

Gutta-percha, a plastic substance from a Malaysian tree called a percha tree, is used as a permanent filling in root canals. During the root canal procedure, the tooth’s damaged area, known as the pulp, is removed, and the tooth’s canals are cleaned out and disinfected before being filled and sealed.

What is final apical file?

The MAF is the last file taken to the minor constriction (MC) of the apical foramen. Its diameter becomes the final prepared diameter of the canal at the MC.

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].