What is the term for sealer material used in root canal obturation?

What is the term for sealer material used in root canal obturation?

• A. Cavity liner
• B. Root canal sealer
• C. Gutta-percha
• D. Dental varnish

Answer: (B)

In root canal obturation, the sealer fills the tiny spaces between the filling core and the canal walls to create a tight seal. This material is called a root canal sealer (also known as an endodontic sealer). Its main job is to prevent leakage and bacterial ingress by bonding to both the dentin and the gutta-percha, accommodating irregularities in the canal. Cavity liner is used under restorations to protect the pulp, not for sealing the canal during obturation. Gutta-percha is the core filling material, not the sealer. Dental varnish is a protective coating used in other procedures, not the sealer for root canal obturation.

In root canal obturation, the sealer fills the tiny spaces between the filling core and the canal walls to create a tight seal. This material is called a root canal sealer (also known as an endodontic sealer). Its main job is to prevent leakage and bacterial ingress by bonding to both the dentin and the gutta-percha, accommodating irregularities in the canal.

Cavity liner is used under restorations to protect the pulp, not for sealing the canal during obturation. Gutta-percha is the core filling material, not the sealer. Dental varnish is a protective coating used in other procedures, not the sealer for root canal obturation.