Composite Materials
These are the three basic components of composite.
What are matrix, filler and coupling agent.
This is the term used to describe a material's ability to resist surface loss.
What is wear resistance.
This is the most common range of concentrations for acid etch.
What is 10-38%.
EPB is the shorthand for this type of adhesive.
What is an all-in-one.
This type of restorative material requires undercuts to hold the restoration in place.
What is amalgam.
This component of composite is responsible for the polymerization shrinkage. This component is also what actually cures/hardens when polymerized.
What is the matrix.
This is the term used to describe how much a dental material expands and contracts for every unit of change in temperature. (Full name required!)
What is the Linear Coefficient of Thermal Expansion.
Composite = 3x natural tooth
Want it as close to tooth as possible.
This is the most common type of acid used for dental etchant.
What is phosphoric acid.
This is the shorthand description of a 2-step adhesive system (hint: there are two, please name 1)
What is E+PB or EP+B.
This is the type of bonding that is associated with microscopic interlocking into enamel porosities and/or dentinal tubules.
What is micromechanical bonding.
A decrease in shrinkage, decrease in LCTE, increase in modulus of elasticity, increase in strength, decrease in water absorption characterize doing this to the filler content.
What is increasing the filler content.
This is the term used when repeated expansion and contraction of the restorative material causes fluids to be sucked in and pushed out of the margins.
What is percolation.
Higher chance of recurrent decay, sensitivity.
These type of teeth require a longer etch time due to enamel rods being less regularly arranged.
What are primary teeth.
The Clearfil SE bond we use in clinic is an example of this generation of adhesive.
What is 6th generation adhesive.
5th Gen: E-PB6th Gen: EP-B
7th Gen: EPB
This is the layer of debris left when dentin is cut or prepared.
What is the smear layer.
This is the material with the lowest modulus of elasticity and therefore is a common material used for class V restorations.
What is flowable composite.
This is the term that refers to a restorative material's stiffness.
What is modulus of elasticity.
This is the term used to describe the "etch and rinse" technique.
What is total etch.
This type of primer has the ability to etch.
What is a self-etching primer.
This is the term used to describe dentin that has been dried too long.
What is desiccated.
This is the order of the three main types of composite in order of most to least filler content.
What is hybrid, macrofill, microfill.
A high modulus of elasticity means a material will be more what?
What is stiff/rigid.
This is what happens when dentin is etched too long. (May require an explanation)
What is: more exposed dentinal tubules, less structure to bond to, more water present.
This is the term used to describe the surface layer of bond that remains uncured.
What is the oxygen-inhibited layer.
This is what allows composite to be placed on top because this unreacted surface layer adheres to the composite.
This is the intermediate layer of resin, collagen and dentin that is produced by acid etching of dentin and infiltration of resin in to the conditioned dentin.
What is the hybrid layer.