WorksheetsDental Materials Theory Test 2 Part 1
Total questions: 15
Worksheet time: 15mins
The best was to check for properly mixed luting cement is to:
Make sure that it is very thin and very runny
Use the spatula to make sure that it is very grainy and sandy
Use the spatula to create a thin line when raised
The smear layer is:
They layer of dental stone that is smeared on the teeth
A layer of cut tooth debris and/or bacteria
Can be removed with light curing
What is the main principle of dental bonding?
Where practitioners to get together to know each other more
To seal margins
To provide adhesion
To add material to the incisal edges
What is an exothermic reaction?
Cooking: adding heat
Water leaving the material due to heat being generated from within
Not applicable as this reaction does not occur with dental materials
What is the main ingredient in cement that produces and exothermic reaction?
Water
Calcium hydroxide
Zinc phosphate
Resin
What is the purpose of pigments in relation to composite resin?
Adds to the hardness of the material
Mimics the structure of natural enamel
Varies as it affects the colour of the restoration
Creates a nice glossy and translucent surface
Dycal being used for pulp capping is also know as:
Polysulfide
Cavity varnish
Calcium hydroxide
Calcium and magnesium
Which cement is a sedative to the pulp?
zinc oxide eugenol (ZOE)
Hybrid ionomer
zinc phosphate
glass ionomer
Which compressive strength is not applicable to ceramic materials?
High compressive strength
Low compressive strength
High transverse strength
The most common form of curing resin bonding agents is:
light curing
self-curing
dual curing
all options listed
Polymerization is the leakage that occurs at the microscopic level and permits bacteria to enter the cavity preparation
True
False
What is sintering?
Fusing ceramic particles at their borders by heating them to the point that they start to melt
Making a cast in a laboratory from the dental impression
Determining the correct colour and shade of a ceramic material
None of these options
Zinc oxide eugenol is used for:
Temporary restorations
Intermediate bases
Luting temporary crowns
All the options listed
Zinc Polycarboxylate cement adheres to tooth structures,
nonirritating to the pulp, is easy to use and inexpensive
True
False
Mostly true
Slightly true
One of the main active ingredients in etching gel is:
Hydrochloric Acid
Phosphoric Acid
Citric Acid
Acetic Acid
