After RCT, for insertion of post dowel:
- a- Post applied pressure.
- b- Post should be lose.
- c- Insert it without pressure but with retention.
The correct answer for post insertion after RCT is: c. Insert it without pressure but with retention.
Here's why:
a. Post applied pressure:
Applying pressure while inserting the post can cause various problems, including:
- Over-cementation: Excessive force can squeeze too much cement out of the canal, compromising the seal and potentially weakening the root structure.
- Crack formation: Overpressure can lead to hairline cracks in the root, especially if the canal is not prepared properly.
- Post displacement: Pushing the post forcefully could dislodge it from its intended position, affecting the final restoration's fit and stability.
b. Post should be loose:
A loose post doesn't provide adequate retention and stability within the canal, compromising the success of the restoration. It can lead to microleakage, bacterial infiltration, and eventual failure of the RCT.
c. Insert it without pressure but with retention:
This option balances optimal post placement with minimal risk of damage.
Here's how to achieve this:
- Prepare the canal: Ensure the canal is properly cleaned, shaped, and dried to receive the post.
- Choose the right post: Select a post with the appropriate size and design for the specific canal.
- Use a luting agent: Apply a suitable luting cement inside the canal and on the post surface to facilitate smooth insertion and secure bonding.
- Slowly guide the post: Gently insert the post into the canal without applying pressure. Use gentle rotary motion if necessary.
- Maintain retention: Ensure the post stays in position until the cement sets. This can be achieved by using temporary crowns or other supportive methods.
By following these steps and choosing option c, you can achieve optimal post insertion after RCT, minimizing the risk of complications and maximizing the success of the restoration.
