14295_CH7DentalAnatomy Flashcards
(97 cards)
1
Q
Three developmental periods?
A
Growth, Calcification, Eruption
2
Q
Dental development begins?
A
5th/6th week - prenatal
3
Q
Horseshoe shaped band?
A
Dental lamina
4
Q
Growth period of development?
A
Bud, Cap, Bell
5
Q
of buds per dental arch?
A
Usually 10
6
Q
Buds for permanent teeth form when?
A
17 weeks - 5 yrs
7
Q
Cap stage also known as?
A
Proliferation
8
Q
Small nipple shaped elevation?
A
Dental papilla
9
Q
Last period of growth?
A
Histodifferentiation or bell stage
10
Q
Cells that form enamel?
A
Ameloblast
11
Q
Cells that form dentin?
A
Odontoblast
12
Q
Cells that form cementum?
A
Cementoblast
13
Q
Tooth takes shape through _______ in the _______ phase?
A
Morphodifferentiation, Bell
14
Q
Depositing of the matrix?
A
Apposition
15
Q
Crown completion to tooth emerging?
A
3yrs (perm teeth)
16
Q
Study of anatomy?
A
Histology
17
Q
Tooth divided into how many parts?
A
2 : crown, root(s)
18
Q
Crown divided into?
A
Anatomic, Clinical crown
19
Q
Four or more roots?
A
Multirooted
20
Q
Opening for blood/nerves?
A
Apical foramen
21
Q
Covers anatomic crown and protects dentin?
A
Enamel
22
Q
Enamel composition?
A
96% inorganic, 1% organic, 3% water
23
Q
Enamel can endure how much crushing pressure?
A
1,000 lbs per sq inch
24
Q
Enamel is composed of?
A
Millions of enamel rods or prisms
25
Constitutes largest portion of the tooth?
Dentin
26
Dentin is harder than ____ but softer than ______?
Bone, enamel
27
Dentin makeup?
70% inorganic, 30% organic and water
28
Covers roots of teeth?
Cementum
29
Cementum color?
light yellow (lighter than dentin)
30
Cementum makeup?
55% organic, 45% inorganic (mainly calcium & salt)
31
Duration of cementum formation?
Throughout life of tooth
32
Chamber containing dental pulp?
Pulp chamber
33
Coronal pulp and pulp horns located?
Crown
34
Radicular pulp located?
Root
35
Chief formation of pulp?
Formation of dentin
36
Provides sensation to tooth?
Pulp
37
Tissues that support the tooth are collectively called?
Periodontium
38
Periodontium consists of?
Cementum, alveolar process, preiodontal ligament, gingiva
39
Only tissue considered basic part of tooth AND component of periodontum?
Cementum
40
Area of attachment for periodontal ligament fibers?
Cementum
41
Alveolar process?
Bone where teeth are embedded
42
Bone that divides sockets?
Interdental septum (Interradicular - when multi rooted teeth are present)
43
More dense: mandibular or maxilla cortical plate?
Mandibular
44
Spongy bone that lies in center of alveolar process?
Trabecular bone (Web like appearance on radiograph)
45
Horseshoe shaped white line on radiograph?
Lamina dura
46
Thin fibrous ligament that connects tooth to bony socket?
Periodontal ligament
47
Three types of oral mucosa?
Masticatory, lining, specialized
48
Keratinized tissue?
Tough protective outer layer
49
Incisive papilla?
Pear-shaped
50
) Palatine raphe?
Whitish midline streak
51
Palatine rugae?
Wrinkles on roof of mouth
52
Protects the alveolar process and periodontal ligament from bacterial invasion?
Gingiva
53
Two types of gingiva?
Unattached, attached
54
Free gingiva should be?
1-3mm wide
55
First area to show signs of gingivitis?
Gingival margin
56
Popcorn gets stuck in what part of gingiva?
sulcus
57
Triangular piece of gingiva between teeth?
Papilla
58
Attached gingiva may have what texture?
Orange peel
59
Line where attached gingiva and alveolar mucosa meet?
Mucoginginal junction
60
How many dentition periods are there?
3 (primary - 20 baby teeth, permanent - 32, mixed - during shedding of baby teeth)
61
Teeth in the upper arch?
Maxillary
62
Teeth in the lower arch?
Mandibular
63
Each arch contain how many teeth?
16
64
In a quadrant there are ___ anterior and ___ posterior teeth?
3, 5
65
Each molar has how many cusps?
4-5
66
How are primary teeth identified on dental chart?
Capital letters A-T (A-J = Maxillary, K-T = Mandibular)
67
What tooth surface is located next to numbers on the chart?
Lingual
68
Surface of tooth that faces lips/cheeks?
Facial (labial), buccal
69
Surface closest to midline?
Mesial
70
Surface opposite mesial?
Distal
71
Surface facing tongue?
Lingual
72
A tooth has how many proximal surfaces?
2 - mesial/distal
73
Point where two adjacent teeth touch?
Contact point (resistance felt when flossing)
74
Interproximal space not occupied (natural gap) is called?
Embrasure
75
When is an embrasure called a diastema instead?
When there is no contact point between teeth
76
The absence of one or more teeth causes?
Malocclusion
77
Normal relationship of two teeth is called?
Key to occlusion
78
Angles classification?
CLASS I - normal, CLASS II - short chin, CLASS III - long chin
79
Study of form and shape of teeth?
Tooth morphology
80
First permanent teeth to erupt?
#24-25 (mandibular central incisors)
81
Usually the longest teeth?
Maxillary cuspid
82
"Bell-crowned" is used to describe the appearance of what tooth?
Mandibular first bicuspid
83
5th cusp is known as?
Cusp of Carabelli
84
Maxillary first molar has how many roots?
Three (lingual is largest)
85
First permanent tooth to erupt?
Mandibular first molar
86
Cusp?
Elevation of enamel
87
Cingulum?
Convex mount, lingual aspect of anterior tooth
88
Fissure?
Linear Fault
89
Fossa?
Rounded or angular depression
90
Two types of triangular fossae?
Mesial and distal
91
Groove?
Small lineal depression on the surface of a tooth
92
Gives the occlusal surface a wrinkled appearance?
Supplemental groove
93
All teeth develop from four or five?
Lobes
94
Incisal edges of newly erupted anterior teeth (soon wears away)?
Mamelons
95
Each cusp has how many ridges radiating from its tip?
Four
96
The only tooth on which an oblique ridge is found?
Maxillary first and second molars
97
Valley formed by inclines of adjacent cusps or ridges?
Sulcus
