Dental Endodontic Materials and Sealer Quiz

Formation of a Monoblock

• The prerequisites for the formation of a monoblock include a bond between the sealer and dentin, and adaptation of the sealer to the canal walls and root filling material.

Primary Monoblock

• A primary monoblock is associated with epoxy resin-based sealers, such as AH Plus.
• In a primary monoblock, the sealer forms a strong bond with the dentin and the root filling material, creating a single cohesive unit.

Definition of Monoblock

• A monoblock refers to the creation of a single cohesive unit with the dentin wall, resulting in a solid and optimal seal in the canal space.

Causes of Microleakage

• The options that are NOT causes of microleakage in root canal obturation are not listed in the text.

Primary vs. Secondary Monoblock

• Secondary monoblocks are distinguished from primary monoblocks by their poor bonding between sealers and dentin.

Gutta Percha

• Gutta percha is considered too plastic to strengthen the roots because it lacks the rigidity to resist forces that can cause root fracture.
• Conventional gutta-percha fails primarily due to its inability to bond with dentin.

Obturation Systems

• Activ GP is an obturation system composed of a core material containing gutta-percha impregnated and coated with glass ionomer on its external surface.
• The glass ionomer in Activ GP creates a chemical bond with the dentin.

EndoREZ Sealer

• EndoREZ sealer is known for its ability to penetrate dentinal tubules due to its unique property of flow and film thickness.

Surface Modification of Gutta Percha

• Surface modification of gutta percha is attempted to enhance its adaptability through improvisation.

Bioceramic Coated Materials

• Bioceramic coated materials are beneficial for sealing canals due to their ability to form a strong bond with dentin.

Secondary Monoblocks

• Root canal obturations are considered secondary monoblock systems despite poor bonding between sealers and dentin because they still provide a solid seal in the canal space.

Tertiary Monoblocks

• Tertiary monoblocks are differentiated from secondary monoblocks by their ability to form a strong bond between the sealer and dentin, as well as the root filling material.