dental morph exam 1 Flashcards
1
Q
dental arch
A
teeth, gingiva and associated bone
2
Q
maxillary arch
A
the upper arch including the associated teeth
3
Q
mandibular arch
A
the lower arch and associated teeth
4
Q
which arch moves?
A
mandible
5
Q
how many permanent teeth?
A
32
6
Q
notation system for permanent teeth
A
I 2/2 C 1/1 P 2/2 M 3/3
7
Q
what divides each arch in half?
A
midline
8
Q
what is each half arch called?
A
quadrant
9
Q
name the anterior teeth and how many there are
A
incisors (8) and canines (4)
10
Q
name the posterior teeth and how many there are
A
premolars (8) and molars (12)
11
Q
how many deciduous teeth are there?
A
20 (10 per arch)…. 4 incisors, 2 canines, 4 molars
12
Q
notation for deciduous teeth
A
I 2/2 C 1/1 M 2/2
13
Q
what is the crown covered in?
A
enamel
14
Q
what is the root(s) covered in?
A
cementum
15
Q
enamel
A
dense hydroxyapatite surface of crown
16
Q
dentin
A
inner hard layer of the crown and root
17
Q
pulp
A
vascular innervated portion of the tooth
18
Q
cementum
A
outer layer of the root surface
19
Q
dento-enamel junction (DEJ)
A
junction of the enamel and dentin layers
20
Q
cemento-enamel junction (CEJ)
A
junction of enamel and cementum layers
21
Q
cervical line
A
junction of the anatomical crown and root
22
Q
clinical crown
A
portion of the tooth that is visible in the mouth
23
Q
anatomical crown
A
the crown above the CEJ
24
Q
which is shorter in patients with inflamed gums (clinical or anatomical)?
A
clinical crown
25
which is longer in patients with recession (clinical or anatomical)?
clinical
26
facial surface
outer most surface toward cheek or lips
27
lingual surface
inner most surface toward the tongue or palate
28
mesial surface
toward the midline
29
distal surface
away from the median line
30
incisal edge
biting or incising edge of anterior teeth
31
occlusal surface
biting or chewing surface of posterior teeth
32
cusp
projection on a crown
33
fossa
depression or concavity between cusps or ridges
34
ridge
linear elevation on the surface of a tooth and is named according to its location
35
cingulum
lingual crown projection on anterior teeth
36
groove
line between the primary parts of a crown or root
37
pit
pinpoint depression at the junction or termination of a groove
38
lobe
primary center of development within a tooth
39
mamelon
round projections of enamel on newly erupted teeth
incisal remnant of incisor development
40
furcation
where root divides
41
root apex
the opening in the root for entrance of the pulp
42
pulp chamber
chamber containing dental pulp
43
pulp horn
highest projection of pulp chamber within the crown
44
pulp canal
inner portion of the root containing the dental pulp
45
periodontium
the tissues that surround the teeth
(includes gingiva, cementum, alveolar bone, periodontal ligament)
46
gums or gingiva
covers the bone and surrounds the cervical portions of teeth
divided into free gingiva, attached gingiva, and interdental papilla
47
gingiva
pale pink - includes free gingiva, attached gingiva, and interdental papilla
48
alveolar muscosa
dark red, loose attachment to the underlying bone
49
mucogingival junction
junction of the alveolar mucosa and gingiva
50
free gingiva
closer to the tooth crown, not attached to bone
51
free gingival groove
separates attached gingiva and free gingiva
52
interdental papilla
triangular shaped gingiva that occupies the gingival embrasure
53
gingival sulcus
space between tooth surface and narrow cervical collar of free gingiva
not seen visually but can be eval'ed with a perio probe
54
periodontal ligament (PDL)
surrounds tooth root and attaches tooth to alveolar bone (periodontal fibers)
55
alveolar bone
alveolar process, forms and supports tooth sockets
56
central incisors
8 and 9 (maxillary)
24 and 25 (mandibular)
57
lateral incisors
7 and 10 (maxillary)
23 and 26 (mandibular)
58
canines
6 and 11 (maxillary)
22 and 27 (mandibular)
59
premolars
4, 5, 12 and 13 (maxillary)
20, 21, 28 and 29 (mandibular)
60
molars
1, 2, 3, 14, 15 and 16 (maxillary)
17, 18, 19, 30, 31, and 32 (mandibular)
61
primary upper dentition
a through j
62
lower primary dentition
k through t
63
lips
covered externally by skin and internally by mucous membrane
64
vermilion zone
red zone of lip
65
vermlion border
where the red zone meets the skin
66
labial commissures / angle of mouth
corners of lips
67
philtrum
middle portion of the upper lip
68
nasiolabial groove
separates the lip from cheek
69
labiomental groove
separates lower lip from chin
70
oral vestibule
slit like space between lips, cheek and teeth
71
buccal / labial sulcus
depth of area where the cheeks join the alveolar mucosa
72
frena
thickened areas of tissue that attach the cheek to alveolar mucosa
73
labial frena
located in midline of maxilla
74
palate
made up of the anterior hard palate (2/3) and posterior soft palate (1/3)
75
incisive papilla / nasopalatine papilla
distinct soft tissue prominence immediately behind the maxillary central incisors
76
palatine rugae
irregular folds of tissue which radiate transversely across the anterior palate from the midline... contain non-displaceable fatty tissue
77
uluva
free edge of the soft palate that drops down in middle of the mouth
78
mylohyoid muscle
muscle that forms floor of mouth
79
lingual frenum
connects tongue to floor of mouth
80
sublingual folds
raised areas on floor of mouth onto which the submandibular glands open
81
when is the first sign of tooth development?
6-7 weeks i.u.
82
when do deciduous teeth begin to calcify?
13-20 weeks i.u.
83
by when do ALL deciduous teeth being to calcify?
18-20 weeks i.u.
84
when do deciduous teeth erupt?
6-30 months
85
eruption
emergence into oral cavity
86
exfoliation
loss of deciduous tooth
87
deciduous eruption pattern
incisors, first molars, canines, second molars
88
deciduous dentition
only deciduous teeth present (up to 6 years of age)
89
mixed dentition
mixture of deciduous and permanent teeth present
90
permanent dentition
only permanent teeth present
91
succedaneous tooth
permanent tooth that replaces a deciduous tooth
92
non-succedaneous teeth
permanent teeth that do not replace deciduous teeth (molars)
93
when does root development complete in permanent dentition?
2-3 years after eruption of teeth
94
when is calcification of crown of teeth completed?
1/2 time of eruption and add one year
95
what is the first part of the crown to calcify?
crown
