1. Why is an access cavity prepared?
Preparation of access cavity is the preliminary step in endodontic treatment which allows localization, cleaning, shaping, disinfection and three dimensional obturation of the root canal system. The success of the endodontic therapy depends on the proper execution of this step.
2. Why should the entire extent of the floor of the chamber be visualized through the access cavity?
The entire extent of the floor should be visualized as it helps in identifying the canal orifices. The floor has natural grooves, especially in the posterior teeth and the ends of the grooves are the canal orifices. Thus it helps for the localization of the canal orifices.
3. Should the prepared access cavity remain unaltered throughout the treatment?
No, the cavity can be modified during the course of the treatment, if need arises. The cavity can be enlarged or even a cusp can be removed if required, to remove any hindrance that occurs. But to avoid enlarging the cavity intraoperatively, it is advisable to prepare wide, proper access cavities.
4. How are the neighbouring canals protected while working on a canal?
Cleaning and shaping of a canal can cause the dentinal fragments or fragments of filling material to fall into the neighbouring canals. To prevent this, the adjacent canal openings can be closed with small cotton pellets.
5. How is temporization important during the course of the endodontic therapy?
Temporization is very important to seal the medication within the canal, forming a hermetic seal to avoid any contamination from outside. It should remain unaltered and must not collapse into the chamber.
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