E.
Restorative Resins
E01. Identify the advantages and drawbacks with
synthetic resins as restorative materials, and explain why a resin such as
bisGMA replaced methylmethacrylate as a resin in some restorative materials.
E02. Identify three monomers often used in dental
composites, and discuss their advantages and drawbacks.
E03. Filler particles, used in dental composites, can be
made from different components. Discuss different filler manufacturing methods,
and how these differences affect the total filler surface per gram filler.
E04. Explain why certain ceramic filler particles cannot
be used in light curable composites.
E05. Discuss the bonding mechanism between a coupling
agent and a filler surface and between a coupling agent and a resin matrix.
E06. Identify which compounds that are needed for visible
light-curing and in which wavelength region the light is located that is used
for light-curing.
E07. Oxygen inhibition can be beneficial when light
cured resin is used. Discuss the validity of that statement.
E08. Compare the reactions speeds of a light-cured
composite with a chemically cured composite, and discuss how curing methods
affects the ability of stress compensation and shrinkage direction.
E09. Determine whether a material that has a degree of
conversion around 60% also must have a high concentration of free monomer.
E10. Recognize the property changes due to filler
particle addition to the resin and identify the characteristics of dental
fillers.
E11. Identify the drawbacks with the traditional
composites.
E12. Even though heterogeneous microfilled composites
may be wear resistant, they are not suitable for Class I and II restorations.
Explain why they should be avoided for such applications.
E13. Explain why small particle-filled composites are
among those with the highest volume fraction filler.
E14. Hybrid composite materials often contain less
volume fraction filler than the small particle filled composites. Discuss how it
is possible to increase the volume fraction filler of a hybrid composite, and
how that might affect the surface characteristics of such a filler rich
composite.
E15. Describe the proper technique for handling the
light source of a light-cured system when placing a Class II restoration, and
explain the consequences of improper utilization of the light.
E16. Discuss the importance of properly finishing
composite resin surfaces. Explain the reason behind two techniques of finishing
composite resins upon removal matrix and after 24 hours.
E17. Compare the physical and mechanical properties of
unfilled resins traditional composites, and microfilled composites. The
properties compared should include surface finish, thermal behavior, compressive
strength, tensile strength, modulus of elasticity, hardness, water absorption,
color stability, and resistance to toothbrush abrasion.
E18. Identify advantages and drawbacks with prosthetic
resin-veneering materials when compared with ceramics.
E19. Dental composites have certain shortcomings that
may affect their biocompatibility. Identify these shortcomings and discuss their
effect on surrounding biological tissues.
E20. Identify three key differences in using chemically
activated composites and light-activated composites.
E21.
Explain why the repair strength of dental composites is substantially lower than
the unrepaired composite.
