Aesthetics

Question 1

What is the sensation of opposing colors after staring at a colored stimulus, caused by stimulation fatuque from your eyes?

Answer 1

Negative after image

Question 2

What is the term for when two colors side by side interact with one another and change our perception of them, but does nothing to the individual colors?

Answer 2

Simultaneous color contrast

Question 3

These are the opposite of shadows, they are the lightest part of image, and along with shadows, give the observer the sense of depth of an object. What are they?

Answer 3

Highlights

Question 4

Shadows add contrast, are caused by curvature of teeth, and can be interpreted as contour. Is the value of the color in the area of a shadow high or low?

Answer 4

Low value

Question 5

What is the space around an object that helps determine its shape?

Answer 5

Negative space

Question 6

What are 5 factors affecting tooth aesthetics?

Answer 6

1. Color
2. Translucency (higher the translucency, low its value)
3. Contour
4. Surface texture (older pt have more polished surface)
5. Luster

Question 7

How many light sources should be used when matching colors?

Answer 7

2

Question 8

If you stain something lighter what will result?

Answer 8

It will become more opaque

Question 9

If you must err to one side of the value when shade matching, to which side do you err?

Answer 9

Lighter, it’s easier to stain darker

Question 10

What is most important for shade matching: hue, chroma, or value?

Answer 10

Value

Question 11

What is the brightness of a hue. The relative amount of light or darkness in a hue?

Answer 11

The value

Question 12

What is the term for saturation, intensity, or strength of a hue (e.g. pink is a weak red, so it has low what)?

Answer 12

Chroma

Question 13

What distinguishes one color from another (red, blue, green)?

Answer 13

Hue

Question 14

What is the term for the henomenon of object appearing different colors when viewed under different light sources (differing spectrophotomeric curves[color distribution of light source])?

Answer 14

Metamerism

Question 15

What are 3 factors affecting color perception?

Answer 15

1. Observer
2. Object
3. Light source

Question 16

What happens to incisal embrasures with age?

Answer 16

Become smaller/disappear

Question 17

What is the character of incisal embrasures?

Answer 17

Get progressively larger from central incisor to canine

Question 18

What is the character of interproximal contacts?

Answer 18

Get progressively larger from central incisor to canine

Question 19

What is the character of interproximal contacts?

Answer 19

They get progressively closer to gingiva the as you move distally

Question 20

What is the ratio for the Golden Proportion?

Answer 20

1.618:1.0 = phi

Question 21

What is the long axis of maxillary anterior teeth?

Answer 21

Such that crown incisal portion is more mesial than the gingival segment of the crown

Question 22

What are the general smile characteristics of an older person?

Answer 22

See less maxillary incisors and more mandibular incisors. By age 60, will see no max incisors, and 3mm of mand incisors as tissue around mouth sags with age

Question 23

What are the general smile characteristics of a younger person?

Answer 23

Show entire length maxillary anterior teeth and none of mandibulars

Question 24

Where is the incisal edge of mandibualr incisors located when making the “S” sound?

Answer 24

The incisal edge is 1.0mm behind and 1.0mm below edge of maxillary teeth

Question 25

Where is the maxillary incisal edge during the "F" sound?

Answer 25

The maxillary incisal edge is against the inner edge of the vermillion border lower lip

Question 26

What is the term for the area seen when a person smiles, usually max anteriors and premolars, can include maxillary 1st molar?

Answer 26

"Appearance zone"