Removing of dentine in dangerous zone to cementum is:
- A- Perforation. (Apical perforation).
- B- Ledge.
- C- Stripping.
- D- Zipping.
The correct answer is C- Stripping.
Here's why:
- Stripping:
This refers to the excessive removal of dentin in the "danger zone" along the root canal wall, thinning it to the point where it becomes almost translucent and weakens the root structure. This can ultimately lead to perforation.
- Perforation:
This is the most severe outcome of stripping, where the thinned dentin ruptures, creating a hole through the root canal wall and potentially communicating with the surrounding bone or periodontal tissues.
- Ledge:
This refers to a sharp, overhanging edge of dentin left behind during instrumentation of the root canal. While not ideal, it's not as concerning as stripping as it doesn't necessarily weaken the root structure.
- Zipping:
This refers to the creation of narrow, longitudinal grooves or channels on the root canal wall during instrumentation. While undesirable, it's not directly related to the "danger zone" and doesn't necessarily lead to perforation.
Therefore, stripping is the most accurate description of removing dentin in the dangerous zone to cementum, as it poses the highest risk of compromising the root structure and leading to perforation.
It's important to note that removing dentin in the danger zone should be avoided as much as possible, and proper endodontic techniques should be followed to minimize the risk of complications.
