DentMat Prelims Exam Lec Flashcards
1
Q
what are the three factors of oral environment
A
- temp
- pH
- masticatory force
2
Q
normal oral temp
A
32°C - 37°C
3
Q
neutral pH level
A
pH 7
4
Q
incisors average force
A
155 N
5
Q
canine average force
A
208 N
6
Q
premolar average force
A
288 N
7
Q
first molar average force
A
290 N
8
Q
second molar average force
A
800 N
9
Q
whats the most biocompatible material to our teeth
A
gold
10
Q
characteristics of an ideal dental material
A
- biocompatible
- mechanically stable and durable
- resistant to corrosion
- dimensionally stable
- minimal conduction
- esthetic
- easy to manipulate
- adheres to tissues
- tasteless and odorless
- cleanable and repairable
- cost-effective
11
Q
classifications of dental materials
A
- preventive
- restorative
- auxiliary
12
Q
whats better than cure
A
prevention
13
Q
toothpaste other name
A
dentrifices
14
Q
the addition f fluoride to water to reduce tooth decay
A
fluoridation
15
Q
overexposure to fluoride
A
fluorosis
16
Q
what procedure is advisable for newly erupted molars
A
pit and fissure sealants
17
Q
classify the material:
pit and fissure sealants
A
preventive
18
Q
classify the material:
compomers
A
preventive
restorative
19
Q
classify the material:
hybrid ionomer
A
preventive
restorative
20
Q
classify the material:
glass ionomer cement
A
preventive
21
Q
classify the material:
liners
A
preventive
restorative
22
Q
classify the material:
bases
A
preventive
restorative
23
Q
classify the material:
composites
A
preventive
restorative
24
Q
classify the material:
primers
A
restorative
25
classify the material:
bonding agent
restorative
26
classify the material:
amalgams
restorative
27
classify the material:
cast metals
restorative
28
classify the material:
ceramics, metal-ceramics
restorative
29
classify the material:
denture polymers
restorative
30
classify the material:
acid-etching solution
auxiliary
31
classify the material:
impression materials
auxiliary
32
classify the material:
casting investments
auxiliary
33
classify the material:
gypsum cast
auxiliary
34
classify the material:
dental stones, plaster, distone
auxiliary
35
classify the material:
dental waxes
auxiliary
36
classify the material:
acrylic resins
auxiliary
37
finishing and polishing arasives
auxiliary
38
classify the material:
dental compounds
auxiliary
39
classify the material:
gutta-percha
auxiliary
40
dental material classes
1. metals
2. ceramics
3. polymers
4. composites
41
consists of inorganic, silicate glasses, porcelains, or highly crystalline solids heated at high temperature
ceramics
42
chemical compound consisting of large organic molecules formed by the union of many smaller repeating units
polymers
43
materials with chemical or covalent bonds
polymers
44
example of synthetic polymer
nylon
45
polymer classifications
natural
synthetic
low melting point
soft and not stiff
46
qualities of composites
insoluble
good tooth-like appearance
insensitive
47
when was dentistry as a specialty believed to have began
3000 B.C.
48
when and who carved ivory or bone for the construction of partial dentures that were fastened to natural teeth
700 BC
Etruscans
49
when and who used implants consisting of seashell segments that were placed in anterior teeth sockets
600 AD
Mayans
50
surgeon to four kings, used lead or cork for tooth fillings
Ambroise Pare
51
used cloth fragments to fill the cavities in her teeth
Queen Elizabeth I
52
who are the four kings that Ambroise Pare served for
King Henry II
Francis II
Charles IX
Henry III
53
father of modern dentistry
Pierre Fauchard
54
when did modern dentistry begin
1728
55
discovered caries and its classifications;
he began the process of standardization
Greene Vardiman Black
56
ADA year
1928
57
CSA year
1966
58
dental products should confirm to appropriate standards or specifications
1. serial / lot number
2. composition
3. physical properties
4. biocompatibility
5. data covering
59
international standards
FDI
ISO
60
properties of dental materials
1. physical
2. thermal
3. electrical
4. optical
5. mechanical
61
susceptible to being dissolved
solubility
62
adsorption + absorption
sorption
63
natural process where molecules of a gas or liquid adhere to the surface of a solid
adsorption
64
passage of a substance into the interior of another by solution or penetration
absorption
65
a molecular or atomic attraction between two contacting surfaces
adhesion
66
force of molecular attraction between molecules or atoms of the same species
cohesion
67
a material substrate that is bonded to another material by means of an adhesive
adherend
68
substance that promotes adhesion
adhesive
69
process of joining two materials by means of an adhesive agent that solidifies
adhesive bonding
70
ability of substance to be wet
wettability
71
the eye is sensitive to what wavelength
400nm(violet) to 700nm(dark red)
72
a color space that specifies colors based on three properties of color
Munsell Color System
73
three properties of color
hue
value
chroma
74
color
hue
75
lightness
value
76
saturation
chroma
77
see through
transparency
78
blurry
translucency
79
prevents the passage of light
opacity
80
what absorbs all light colors
black
81
what reflects all light colors
white
82
what absorbs all light, but reflects its own color
blue
83
objects that appear to be color-matched under one type of light, but may appear different under another type
metamerism
84
when the material becomes the source of light
fluorescence
85
three basic forces
tensile force
compressive force
shear force
86
types of stress
tensile
compressive
shear
flexural
torsional
87
the deformation or change in dimension an object under stress experiences
strain
88
stress-strain curves
elastic limit
yield strength
ultimate strength
89
when the force is removed, the material will come back to its original state;
reversible
elastic phase
90
material can't come back to its original state;
irreversible
plastic phase
91
elastic phase becomes plastic phase
elastic limit
92
gradual deformation
creep
93
stress decreases, but there's already deformation
stress relaxation
94
ability to be bent without breaking
flexibility
95
ability to be hammered or compressed plastically into thin sheets without fracture
malleaility
96
relative ability of a material to elongate plastically under a tensile stress
ductility
97
easily breakable material
brittleness
98
subjected to a cycle of stress
fatigue
