Color

Question 1

What is the Esthetic Triad?

Answer 1

Shape, Texture, Color

Question 2

Pigment, Color Tone (red, blue, yellow)

Answer 2

Hue

Question 3

Intensity or degree of saturation and purity of a color tone (hue)

Answer 3

Chroma

Question 4

The degree of color brightness

Answer 4

Value

Question 5

Is more value mean that it is lighter or darker?

Answer 5

lighter

Question 6

The ability to absorb radiant energy and emit it in the form of a different wavelength

Answer 6

Fluorescence

Question 7

The ability of a translucent material to appear blue in reflected light and red-orange in transmitted light

Answer 7

Opalescence

Question 8

The degree to which light is transmitted rather than absorbed or reflected

Answer 8

Translucency

Question 9

What do rods perceive?

Answer 9

the brightness of the color, the intensity of the light rays

Question 10

What do cones perceive?

Answer 10

the hue (color)

Question 11

Where is the color of teeth derived from?

Answer 11

dentin

Question 12

Enamel modifies the dentinal body color, … the brightness (value) and acts as a selective light filter

Answer 12

increasing

Question 13

What color is dentin generally?

Answer 13

reddish yellow

Question 14

What does dentin posses that makes it fluorescent; light is reflected back with more energy than the original?

Answer 14

phytochrome and fluorophore

Question 15

When does Dentin have the higher chromaticity?

Answer 15

when older; slow increase in orange-red color

Question 16

Dentin is thicker due to what?

Answer 16

contraction of the pulp and it is replaced by secondary dentin

Question 17

What does the affect of dentin aging have on opacity?

Answer 17

dentin becomes more mineralized and looses opacity (more transparent)

Question 18

Enamel is responsible for regulating the …

Answer 18

Value, tooth brightness (has a high value)

Question 19

Enamel is characterized by a high degree of ….

Answer 19

translucency and unique light effects

Question 20

When using composite resin you should make the enamel layer thinning than natural enamel due to?

Answer 20

thicker composite lowering the value

Question 21

Blue or gray transparent effects found in the incisal 3rd and/or inter-proximal enamel (dentin-free area); Special Optical properties of transparence and iridescence

Answer 21

Opalescences

Question 22

The border between enamel and dentin, a highly fluorescent organic layer. Created after the dentinal body and before the final enamel layer.

Answer 22

Intermediate (mid) layer DEJ

Question 23

What 3 properties can be seen in the mid layer?

Answer 23

1. Intensives
2. Opalescences
3. Characterizations

Question 24

Spots frequently found in natural enamel. They appear as white blurred stains of different types, that is, defined as points, clouds, or bands.

Answer 24

Intensives

Question 25

Existing color characteristics present in teeth, such as white or amber bands, enamel cracks, colored mammelons, and stains

Answer 25

Characterizations

Question 26

What elements affect color?

Answer 26

1. Illumination 2. Contrast Effects 3. Viewer Associated Effects

Question 27

When 2 objects appearing to match in color under 1 condition show differences under another condition

Answer 27

Metamerism

Question 28

Poor lighting creates defects in ... perception, crucial in dental color matching.

Answer 28

red-yellow

Question 29

How should the light be for color matching?

Answer 29

soft, diffuse, and white

Question 30

Visual phenomena that create optical illusions difficult to decipher

Answer 30

contrast effects

Question 31

Use a background with a ... chroma relative to the shade of the tooth so color is more intense and easier to distinguish.

Answer 31

lower

Question 32

Larger teeth appear ..., ... teeth appear larger

Answer 32

lighter

Question 33

When one color is viewed immediately after another an afterimage often will appear.

Answer 33

Successive - Contrast effect

Question 34

When is maximum enamel dehydration?

Answer 34

30-45 mins

Question 35

Which tooth has the highest chroma of the dominate hue?

Answer 35

canine