Dental Materials Quiz 9
1 / 50
NiTi alloy have_______________?
2 / 50
Who was the first person to introduce cast inlay restoration into dentistry ?
3 / 50
Rubber base impressions are poured immediately as they_______________?
4 / 50
High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?
5 / 50
Hydrocolloid material, show all except______________?
6 / 50
Shape memory in NiTi is because of stress induced form__________________?
7 / 50
Impression plaster containing potato starch is called______________?
8 / 50
The higher the Hg alloy ratio in dental amalgam________________?
9 / 50
Which of the following is not affected by saliva ?
10 / 50
Cohesion of gold foil is an example of______________?
11 / 50
Water powder ratio of dental stone and plaster is respectively_________________?
12 / 50
The water powder ratio of alginate is______________?
13 / 50
The basic constituent of reversible hydrocolloid impression material is________________?
14 / 50
All of the following statements about cast cobalt alloy are true EXCEPT_____________?
15 / 50
Dicor restoration is_______________?
16 / 50
The most important disadvantage of acrylic denture base is_______________?
17 / 50
Wax pattern is ideally invested immediately to decrease the dimensional changes caused by_______________?
18 / 50
The maximum shrinkage during firing proces in ceramic occurs in__________________?
19 / 50
Adequate mixing of mercury is indicated by_______________?
20 / 50
Space lattice refers to_______________?
21 / 50
What is the polymerization shrinkage if 3:1 powder: liquid ratio is used____________?
22 / 50
Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?
23 / 50
The largest component of amalgam alloy is_____________?
24 / 50
Modiffiers are added to gypsum mainly to_______________?
25 / 50
Porcelain denture teeth________________?
26 / 50
The inlay wax most commonly used for direct technique_____________________?
27 / 50
Etching depth after 30 sec for orthodontic bracket with orthophosphoric acid is_________________?
28 / 50
Placing cast under tap water is to be avoided as______________?
29 / 50
Mechanical properties of Cp Titanium are similar to alloys_____________?
30 / 50
Fluoride rich materials include ?
31 / 50
Which of the following cast gold alloys is used for fabricating partial denture frameworks______________?
32 / 50
When restoring a tooth with resin material, acid etching can do all of the following except______________?
33 / 50
Alginate impression material is similar to Agar-agar impression material in the following respect________________?
34 / 50
The main ingredient of inlay wax is__________________?
35 / 50
Which of the following has the highest modulus of elasticity ?
36 / 50
Advantage of minimum mercury technique or Eames technique is all Except________________?
37 / 50
All of the following statements about the differences between self-polymerizing acrylic resins and heat-cured resins are true EXCEPT______________?
38 / 50
Rough surface of elastomeric impression results from_______________?
39 / 50
Chemical tempering in porcelains is done to interrupt crack propagation by______________?
40 / 50
Austenite is an alloy of iron of and carbon with the iron in______________?
41 / 50
Tear strength for impression material is highest for__________?
42 / 50
Subsurface porosity is due to_____________?
43 / 50
The average life of silicate cement restoration is______________?
44 / 50
Amalgam restorations give the best clinical service when the residual mercury content is_______________?
45 / 50
When selection the colour of cement to use for cementing a porcelain jacket crown, the powder being tested is best mixed with______________?
46 / 50
Mouth temperature waxes are_______________?
47 / 50
The base paste of the condensation poly sillicone has a low molecular weight dimethyl siloxane with a terminal-group_______________?
48 / 50
Acrylic resins were first introduced as a denture base material in______________?
49 / 50
Silver plated dyes use an electrolytic bath of_______________?
50 / 50
Binder in phosphate bonded investment is______________?
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