Part 1

Question 1

Adhesive

Answer 1

A material that can join substances together, resist separation and transmit loads across the bond is an adhesive.

Question 2

Etching

Answer 2

It is the process of increasing the surface reactivity by demineralizing the superficial calcium layer and thus creating the enamel tags. These tags are responsible for micromechanical bonding between tooth and restorative resin.

Question 3

Primer

Answer 3

A hydrophilic, low viscosity resin which is usually bifunctional monomer in a volatile solvent like acetone or alcohol. Monomers commonly used in primers are HEMA.

Question 4

Conditioner Dentin

Answer 4

Conditioner is an acidic agent that dissolves the inorganic structures in dentin resulting in collagen mesh that allows infiltration of an adhesive resin.

Question 5

Hybrid layer

Answer 5

This layer formed by demineralization of dentin, infiltration of monomer and subsequent polymerization is called hybrid layer.

Question 6

Smear Layer

Answer 6

When a tooth surface is altered using hand or rotary instruments, cutting debris are gathered on enamel and dentin surface, forming a smear layer.