esthetics Flashcards
1
Q
facial proportions
A
- ophriac
- interalar
- chin
2
Q
horizontal reference lines
A
- eyebrow (ophriac)
- interpupillary line
- interalar line
- commissural
- chin
3
Q
vertical lines
A
facial midline
4
Q
interpupillary/commissural lines help with
A
incisal plane
gingival margins
maxilla
5
Q
midline is good for
A
interproximal line bt central incisors
6
Q
midline shift
A
straight line off center
7
Q
midline cant
A
skewed line off center
8
Q
upper lip line
A
- length of max incisor exposed
- vertical position of gingival margins during smile
9
Q
lower lip line
A
- position of the incisal edge of max incisors
- curvature of incisal plane
10
Q
smile line
A
the max incisal plane follows curvature of lower lip
11
Q
length to width ratio of max incisors
A
75-80 %
12
Q
golden proportion is derived from
A
fibonacci sequence
13
Q
what is the golden ratio
A
1.618
so Li = 1, then Ci = 1.618 and C = 0.618
14
Q
the width of the lateral incisor should be ____% of the width of the central incisor
A
61.8%
15
Q
RED proportion
A
each tooth gets narrower by 70%
