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23 Growth and Development > 2 - Evaluation of Face and Basic Terminology > Flashcards

2 - Evaluation of Face and Basic Terminology Flashcards

(77 cards)

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1
Q

most children show eruption of primary incisors by when

A

first birthday

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2
Q

most children show complete eruption of primary dentition by when

A

third birthday

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3
Q

is age of eruption or sequence of eruption more important

A

SEQUENCE

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4
Q

how many teeth in primary dentition

A

20 teeth

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5
Q

how many teeth in permanent dentition

A

32 teeth

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6
Q

primary molars are succeeded by what teeth

A

permanent premolars

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7
Q

primary dentition calcification begins at

central incisors
lateral incisors
canines
first molars
second molars

A

all 4th fetal month

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8
Q

primary dentition formation complete at

central incisors
lateral incisors
canines
first molars
second molars

A

central incisors 18-24 months
lateral incisors 18-24 months
canines 30-39 months
first molars 24-30 months
second molars 36 months

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9
Q

primary dentition eruption of maxillary

central incisors
lateral incisors
canines
first molars
second molars

A

central incisors 6-10 months
lateral incisors 8-12 months
canines 16-20 months
first molars 11-18 months
second molars 20-30 months

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10
Q

primary dentition eruption of
mandibular
central incisors
lateral incisors
canines
first molars
second molars

A

central incisors 5-8 months
lateral incisors 7-10 months
canines 16-20 months
first molars 11-18 months
second molars 20-30 months

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11
Q

primary dentition exfoliation
of mandibular
central incisors
lateral incisors
canines
first molars
second molars

A

central incisors 6-7 y
lateral incisors 7-8 y
canines 9-11 y
first molars 10-12 y
second molars 11-13 y

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12
Q

primary dentition exfoliation
of maxillary
central incisors
lateral incisors
canines
first molars
second molars

A

central incisors 7-8 y
lateral incisors 8-9 y
canines 11-12 y
first molars 9-11 y
second molars 9-12 y

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13
Q

what is the most common way for pediatric dentists to describe individual primary teeth

A

lettering

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14
Q

what is the system for numbering primary dentition used by orthodontists and pre-formed crown manufacturers

A
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15
Q

what tooth

A

L

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16
Q

what tooth

A

N

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17
Q

primary tooth eruption begins around ___ and is complete by ___

A

begins around 6 months; complete by 36 months

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18
Q

what primary tooth erupts first

A

primary mandibular centrals

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19
Q

what primary tooth erupts last

A

primary maxillary second molars

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20
Q

eruption sequence of primary teeth in both pattern

A

A-B-D-C-E

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21
Q

primary occlusion is typically established by ___ of age with little dimensional change until eruption of perm dentition

A

36 months

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22
Q

eruption sequence of maxillary perm

A

6-1-2-4-5-3-7-8

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23
Q

eruption sequence of mandibular perm

A

6-1-2-3-4-5-7-8

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24
Q

what is a vertical measurement of incisor overlap

A

overbite

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25
what is typically reported as percentage of overlap of mandibular incisor crown
overbite (e.g., 50% overbite)
26
what is the normal range of overbite
10-70%
27
if there is no vertical overlap of CI, the patient is considered to have what
anterior open bite
28
in open bite cases, relative vertical position of CI is recorded as millimeters of vertical distance from ___ to ___
incisal edge to incisal edge
29
open bites may have what types of origins?
intrinsic origin (genetic) or extrinsic (environmental)
30
what are common extrinsic factors that cause open bite in children
pacifier use, thumb/finger sucking, tongue thrusting habits
31
if excessive vertical overlap of CI, the patient is said to have ___
anterior deep bite
32
in ___ it is important to look for impingement of mandibular incisors of the palatal tissues
deep bite cases
33
what is described to have horizontal measurement of incisor overlap
overjet
34
overjet is typically reported as millimeter horizontal distance from ___ to ___
from labial of maxillary CI to labial of mandibular CI
35
normal ranges of overjet
2-4 mm
36
if max CI is lingual to labial surface of mand incisor, the overjet is expressed as ___
negative (-) millimeters
37
patients with negative overjet is classified as what
anterior crossbite
38
do patients have just a single tooth in cross bite or multiple teeth in cross bite?
could be either single tooth or multiple teeth
39
frontal plane horizontal assessment is based on what
1/5s
40
an ideally proportional face can be divided into what
central, medial, and lateral equal fifths horizontally
41
what determine the central and medial fifths of frontal plane horizontal assessment
width of eyes and separation of eyes
42
what should be centered within central fifth of frontal plane horizontal assessment
nose and chin
43
what should be as wide or slightly wider than the central fifth of frontal plane horizontal assessment
nose
44
based on the frontal plane horizontal assessment, the interpupillary distance should equal what
width of mouth
45
frontal plane vertical assessment is based on what
1/3s
46
an ideally proportional face is traditionally divided into what
equal thirds (acceptable for lower third to be slightly longer than central third)
47
the lower facial third of frontal plane vertical assessment is subdivided again into what
into thirds with mouth being 1/3 way between the base of the nose and chin
48
having long facial height (long and narrow) is described as
dolichofacial
49
having a proportioned facial height "normal" is described as
mesiofacial
50
having a short facial height (broad and short) is described as
brachyfacial
51
profile convexity or concavity results from what
disproportion in size of jaws
52
can you determine which jaw (maxilla or mandible) is causing facial disharmony just by determining facial profile
NO! additional info is needed
53
a convex profile indicates what class relationship? what does this result from?
Class II - results from maxilla too far forward or mandible too far back
54
a concave profile indicated what class relationship? what does this result from?
Class III - maxilla is too far back of mandible that protrudes too far forward
55
what is an anthropometric reference line frequently used in analysis of lateral face
frankfort horizontal plane
56
where is the frankfort horizontal plane
superior limit of external auditory meatus and palpated border of infraorbital bony rim
57
what is the vertical line of frankfort horizontal plane
perpendicular to FH line thru glabella
58
what is the angle formed between nasion-pagonion line and the FH plane
facial plane angle
59
what does the facial plane angle locate and determine
locate the horizontal position of the chin and determines if skeletal profile is retrognathic or prognathic
60
clinical norm of facial plane angle
approximately 89 degrees
61
clinical deviation of facial plane angle
3 degrees from 89
62
what indicates a prognathic mandible
facial plane angle greater than 90 degrees
63
what indicated a retrognathic mandible
facial plane less than 90 degrees
64
what are variable influences that affect facial plane angle
age and ethnicity
65
what can be visualized by placing mirror handle along border of mandible
mandibular plane
66
what is the angle formed between the mandibular plane and FH plane
mandibular plane angle
67
clinical norm between mandibular angle and FH
appro 26 degrees
68
clinical deviation between mandivular angle and FH plane is
4 degrees from 26
69
angle formed between mandibular angle and FH plane being GREATER than 31 degrees indicates what
dolichofacial (long face) growth pattern
70
angle formed between mandibular angle and FH plane being LESS than 21 degrees indicated what
brachyfacial (short face) growth pattern
71
what is the angle formed by intersection of lines of tangent to the columella of the nose and the upper lip
nasolabial angle
72
what provides an assessment of nose to upper lip relationship
nasolabial angle
73
what is a line connecting the tip of the nose and the most anterior point of the soft-tissue chin
aesthetic plane (E-plane)
74
what is the horizontal distance between lower lip and aesthetic plane
lip protrusion
75
the interpretation of aethetic plane and lip protrusion indicates what
soft-tissue balance between lips and profile
76
clinical norm of aesthetic plane and lip protrusion at 8.5 years and adulthood
8.5 years: -2 mm adult: -5 mm
77
clinical deviation of aesthetic plane and lip protrusion at 8.5 years and adulthood
8.5 years: 2 mm from -2 mm adult: 2 mm from -5 mm

23 Growth and Development (11 decks)

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