NOT a good obturation material due to the damage it causes near the root canal system?

NOT a good obturation material due to the damage it causes near the root canal system?

• A. Paraformaldehyde paste
• B. Gutta-percha with sealer
• C. Mineral trioxide aggregate
• D. ZOE paste

Answer: (A)

Biocompatibility and a stable seal are essential for any material placed in the root canal, because it sits right next to periapical tissues. Paraformaldehyde paste is toxic and releases formaldehyde, which can damaged cells and cause tissue necrosis and inflammation in the periapical region. That kind of damage impairs healing and can lead to chronic irritation, making it unsuitable as a long-term obturation material. In contrast, gutta-percha with sealer is inert and seals the canal with minimal tissue irritation. Mineral trioxide aggregate is highly biocompatible and can even promote healing at the periapex, which is why it’s favored for certain applications. ZOE paste has been used historically but can dissolve and irritate tissues over time, so it’s not ideal for a lasting seal. The key point is that the toxic potential of paraformaldehyde paste near the root canal system disqualifies it as a good obturation material.

Biocompatibility and a stable seal are essential for any material placed in the root canal, because it sits right next to periapical tissues. Paraformaldehyde paste is toxic and releases formaldehyde, which can damaged cells and cause tissue necrosis and inflammation in the periapical region. That kind of damage impairs healing and can lead to chronic irritation, making it unsuitable as a long-term obturation material. In contrast, gutta-percha with sealer is inert and seals the canal with minimal tissue irritation. Mineral trioxide aggregate is highly biocompatible and can even promote healing at the periapex, which is why it’s favored for certain applications. ZOE paste has been used historically but can dissolve and irritate tissues over time, so it’s not ideal for a lasting seal. The key point is that the toxic potential of paraformaldehyde paste near the root canal system disqualifies it as a good obturation material.