Biocompatibility
Can local effects of dental materials occur in the root apex?
Yes
Negative reproduction
What is a "building block" of a polymer?
monomer
Which ceramic type is the strongest and most opaque?
zirconia
Name a noble metal used in dentistry
Gold / Palladium / Platinum (any of the 3)
TRUE OR FALSE: An allergic reaction is an immune system response to trauma and damage to an organism.
False
What type of impression material is alginate?
Irreversible hydrocolloid
How can you bring down polymerization shrinkage?
Using less monomer
What substance is added to zirconium for better aesthetics?
Yttria (yttrium oxide)
Is silver a noble or base metal in dentistry?
Base metal in dentistry
What metal most commonly results in an allergic reaction?
Nickel
What is the main difference between elastic and inelastic impression materials?
Elastic materials (like alginate or PVS) can stretch and return to shape, used for undercut areas;
Inelastic materials (like zinc oxide-eugenol) are rigid and fracture if deformed.
What is it called when a polymer is formed with only one monomer?
homopolymer
What is the main difference between glassy and crystalline ceramics?
Glassy ceramics are more translucent and aesthetic but weaker;
Crystalline ceramics (like zirconia) are stronger and more opaque, ideal for posterior restorations.
Name a base metal used in dentistry
Includes Titanium (Ti), Nickel (Ni), Copper (Cu), Silver (Ag), Cobalt (Co), Zinc (Zn), Chromium (Cr)
Name a possible local effect caused by dental materials
Local effects may include inflammation, irritation of the pulp or mucosa, and allergic reactions at the site of contact
Name a plant origin wax that is used in dentistry
Plant origin: carnauba wax, candelilla wax
Name a property that increases as a polymer chain becomes longer
Rigidity and strength
What class of ceramic material is most glassy and most translucent?
Feldspathic porcelain
Name a key difference between noble and base metals in dentistry
Noble metals (gold, palladium, platinum) resist corrosion and are more expensive;
Base metals (nickel, cobalt, titanium) are cheaper but more prone to oxidation and allergies.
Name a location that a local effect might occur
Why is it important for wax to burn out cleanly?
So no residue is left when casting/pressing
Why are copolymers preferred over homopolymers in dentistry?
Copolymers combine different monomers to improve properties like flexibility, toughness, and reduced brittleness, making them more suitable for dental applications
Name an optical property
What colour is the high noble Identalloy certificate?
Yellow