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Dental Materials
Question Bank
17 cards·by samiaa.e
Electrochemical reactions are primarily hazardous to
Technician
What is the role of humectants in toothpastes
Prevents moisture loss
Who is most at risk from hazards in the dental clinic
Dentist and nurse
What is the test for brittle materials
Diametral test
What cannot be found on a stress-strain plot
Fatigue strength
What property is a measure of transient heat flow
Thermal conductivity
What is the measure of rigidity/stiffness
Youngs modulus
What are ceramics
Inorganic and non-metallic materials which are polymorphous
What is polymorphism
Can exist as crystalline or non-crystalline
What bond is dipolar but not electron sharing
van der waals
What is a property of rubber
Easy to deform - weak intermolecular forces
What does a plasticiser do
Decreases tg
In what form would a polymer be if its Tg is greater than room temp
Glass
Why are plasticizers incorporated in monomers before polymerisation
To make the polymer soft and rubbery by depressing its Tg
Who is at greatest risk of freshly mixed amalgam
Dentist and nurse
Light and laser cause damage to
eyes
What is the name of the reaction that forms a new product and a by-product
Condensation polymerisation