Question

Dentin bonding agent is:

• A. Hydrophilic
• B. Hydrophobic
• C. Hydrophilic and hydrophobic
• D. Lipophilic and lipophobic

Hint:

The ability of dentin bonding agents to interact with both hydrophilic and hydrophobic components of dentin is crucial for successful adhesion.

Answer 1

The Correct Option is C

Dentin bonding agents are dental materials used to bond restorative materials, such as composite resins or porcelain, to dentin. These bonding agents must be able to bond to both the hydrophilic and hydrophobic components of dentin. The collagen fibers in dentin are hydrophilic, meaning they attract water, while the hydroxyapatite crystals in dentin are hydrophobic, meaning they repel water. 
For a successful bond between the restorative material and dentin, the bonding agent must be able to penetrate the porous structure of dentin and bond to both the hydrophilic collagen fibers and the hydrophobic hydroxyapatite crystals. Dentin bonding agents typically contain both hydrophilic and hydrophobic components to achieve this dual bonding capability.