Dental Materials Quiz 6
1 / 50
Coefficienty of thermal expansion of tooth enamel is closest to_______________?
2 / 50
The strength of the gypsum specimen when the water in excess of that required for the hydrate of the hemihydrate is left in the specimen is called____________?
3 / 50
The strength of a gypsum investment is dependent on_______________?
4 / 50
The carat for Au foil used for restorations is_______________?
5 / 50
By increasing the percentage of which metal, the strength and hardness of amalgam increases_____________?
6 / 50
Why GIC is best restorative material in children_____________?
7 / 50
Which of the following hardness test is a micro hardness test ?
8 / 50
Accelerators and retarders are used with gypsum products mainly to control_______________?
9 / 50
Impression material that Do NOT harden by chemical reaction_______________?
10 / 50
For porcelain fused to metal crown, the porcelain should have ______________?
11 / 50
PH of polycarboxylate liquid is____________?
12 / 50
Bonding of composite resins to tooth structure is by________________?
13 / 50
The standard perforated tray for us with alginate impression materials may be brought to more customized contour by_______________?
14 / 50
High strength amalgam is achieved by_____________?
15 / 50
Co-efficient of Thermal exansion of amalgam is______________?
16 / 50
Compare to conventional amalgams, spherical amalgams_______________?
17 / 50
The percentage of copper in high copper alloy is______________?
18 / 50
Beta hemihydrate particles absorb______________?
19 / 50
Polymerisation of heat-cured methyl methacrylate is initiated by______________?
20 / 50
For esthetic areas where high luster is required the restoration used usually______________?
21 / 50
Disadvantage of having a short sprue is________________?
22 / 50
All of the following statements about Type II silicon impression material are true EXCEPT_______________?
23 / 50
Agar syringe material can be used with/as______________?
24 / 50
Sublimation is the conversion of a___________________?
25 / 50
Chemical method of strengthening porcelain involves_________________?
26 / 50
A highly polished surface on a metallic dental restoration aids considerably in the prevention of the____________?
27 / 50
Super abrasive is________________?
28 / 50
Boxing wax is also called as________________?
29 / 50
Heavy and light body impression materials are use with______________?
30 / 50
Most advantageous indication of acid etching is______________?
31 / 50
The imperfection seen on the lingual flange of a lower denture caused by rapid heating during a curing cycle is called_____________?
32 / 50
The principal constituent of set silicate cement matrix is_______________?
33 / 50
Resistance to corrosion in a cobalt-chrome casting is due to presence of_______________?
34 / 50
All of the following statements about an alginate impression are EXCEPT________________?
35 / 50
The elastic of plastic deformation to fracture a material is its_______________?
36 / 50
The best tissue tolerated material for crown and bridge_______________?
37 / 50
Flow of a material refers to_______________?
38 / 50
Rough and irregular surface produced on the impression is because of_______________?
39 / 50
The Knoop Hardness Number of Microfilled composite Restorative material ranges from____________?
40 / 50
The impression materials with lowest viscosity is_____________?
41 / 50
White gold alloy predominantly is______________?
42 / 50
Which of the following is correct________________?
43 / 50
18-B Stainless steel orthodontic wire has_______________?
44 / 50
The principle application of zinc phosphate cement is_____________?
45 / 50
The advantage of unfilled methyl methacrylate is that______________?
46 / 50
The ADA specification No 1 for composition of amalgam alloy recommends______________?
47 / 50
Which of the following characterizes the silicate cement______________?
48 / 50
The term given to the phenomenon of moisture absorption by an alginate impression in________________?
49 / 50
To prevent porosity in self-cure acrylic resin, curing should be carried in______________?
50 / 50
Which of the following statements about high copper silver alloy compared to conventional alloy is not true ?
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