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Dental Assisting > Chapter 10: Landmarks Of The Face And Oral Cavity > Flashcards

Chapter 10: Landmarks Of The Face And Oral Cavity Flashcards

1
Q

Anatomical crown

A

Portion of tooth covered by enamel

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2
Q

Clinical crown

A

Portion of tooth that is visible in the mouth

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3
Q

Enamel

A
  • the hardest material in the body

- formed by ameloblasts

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4
Q

What is composed of calcified enamel prisms or enamel rods

A

Enamel

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5
Q

Hydroxyapatite crystals

A

Found in enamel, consists primarily of calcium

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6
Q

Striae of retzuis

A

Incremental growth lines or bands seen in tooth enamel

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7
Q

Hypocalcified or uncalcified ends of enamel rods that extend from DEJ into enamel

A

Enamel tufts

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8
Q

Cracks or faults found microscopically in enamel which extend from the enamel surface toward DEJ

A

Enamel Lamellae

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9
Q

Enamel spindles

A

End of ondontoblast fiber extend slightly into enamel

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10
Q

Hunter-Schreger Bands

A

Alternating dark and light bands in enamel. Caused by intertwining or changing direction of prisms

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11
Q

Dentin

A
  • covered by enamel and cementum and protects the pulp

- formed by ondontoblasts

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12
Q

Dentinal tubules

A

Canals in dentin

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13
Q

Dentinal fibre

A

Transmits pain stimuli

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14
Q

Primary dentin

A

Formed before eruption of tooth

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15
Q

Secondary dentin

A

Forms after eruption of tooth

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16
Q

Repetitive dentin or tertiary dentin

A

Formed in response to irritation

-ex. Cavities, erosion, dental treatment

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17
Q

Pulp

A

Tooth receives nourishment from pulp

-formed by fibroblasts

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18
Q

Radicular pulp

A

Root pulp

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19
Q

Apical foramen

A

Opening at the apex for continuation of the nerve

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20
Q

Cementum

A

Connective tissue / anchors tooth in bony socket

Formed by cementoblasts

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21
Q

The periodontium is divided into 2 units which are?

A

Attachment apparatus and the gingival units

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22
Q

Attached apparatus consists of ?

A

Cementum, alveolar process, periodontal ligaments

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23
Q

The attachment apparatus

A

Supports maintains and retains the tooth in functional position

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24
Q

The extension of bone from mandible and maxilla

A

Alveolar process

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25
Osteoblasts
Form bone
26
Is the mandible or maxilla more dense
The mandible is more dense
27
Cortical plate of the alveolar process
Is a dense outer covering of the spongy bone and is the central part of the alveolar process
28
Alveolar crest
Highest point of the alveolar ridge It is fused with the cortical plate
29
Alveolar socket
Cavity with the alveolar process, surrounds the root of the tooth
30
The bony socket that separates one socket from another is the
Interdental septum
31
The bone that separates the roots of multi-rooted tooth
Interradicular septum
32
The lamina dura is also known as
The cribriform plate
33
The lamina dura is what?
A thin compact bone that lines the alveolar socket
34
Periodontal ligaments are what
Dense connective tissue that connect cementum with alveolar bone of the socket wall
35
Sharpeys fibres
Attachment/embedded points in cementum and bone that are mineralized
36
What are the 3 different fiber groups in periodontal ligaments
Periodontal fiber group, transseptal fiber groups, gingival fiber groups
37
Periodontal fiber groups
Support the tooth in socket
38
What supports the tooth in relation to neighbouring teeth
Transseptal fiber group
39
What supports the gingiva that surrounds the tooth
Gingival fiber group
40
Alveolar crest fibers
Opposes lateral forces
41
What prevents lateral movement
Horizontal fibers
42
Oblique fibers
Main support of the tooth as they are most numerous and resist forces
43
What fiber prevents tipping and resists twisting
Apical fibers
44
Interdental fibers are found where and secures what
In between teeth and secure position of adjacent tooth
45
What are the three types of mucosa in the gingival unit
Lining mucosa, masticatory mucosa and specialized mucosa
46
What mucosa lines the inside of the cheeks, lips, split palate and ventral surface of the tongue
Lining mucosa
47
The masticatory mucosa covers what and is designed to do what
Attached gingiva, hard pallets and dorsum of the tongue | -designed to withstand forces of chewing
48
The specialized mucosa is responsible for what
Sensations of taste and covering the dorsal of the tongue
49
Gingiva is also known as the what
Gums
50
A healthy gingiva looks how
Stippled and similar to the surface of an orange
51
The unattached gingiva is also known as the what
Marginal or free gingiva
52
Space between tooth and gum
Sulcus
53
Epithelial attachment
Tissue at the base of sulcus where the gingiva attaches to the tooth
54
The extension of the free gingiva that fills the interproximal embrasure between the two teeth is known as
Interdental gingiva
55
A shallow groove that runs parallel to the margin of the unattached gingiva and marks the beginning of attached gingiva
Gingival groove
56
The oral cavity consists of two areas which are
Vestibule and the oral cavity proper
57
Vestibule is the space between what
Teeth and inner mucosal lining of the lips and cheeks
58
The space on the tongue side within the upper and lower dental arches is the what
Oral cavity proper
59
Mucobuccal fold
The base of each vestibule where the bucks mucosa meets the alveolar mucosa
60
Fordyce’s spots are what
Misplaced sebaceous glands
61
The white ridge of raised tissue extending horizontally at the level where the max and mand teeth come together is known as
Linea alba
62
a slightly raised line extending from the back of the incisive papilla and down the middle of the hard palate
Palatine raphe
63
The palatine Rugae is what
the ridges that run horizontally across the hard palate behind the incisive papilla
64
The opening between the two pillars and contains the palatine tonsils is known as what
Isthmus or fauces
65
What is the ala
Winglike tip on the outer side of each nostril
66
Philtrum
Vertical groove on the midline of the upper lip
67
Tragus
Cartilage projection anterior to the external opening of the ear
68
Canthus
Fold tissue at the corner of the eyelid
69
The line that marks a colour change from your face to your lips is known as
Vermillion border

Dental Assisting (32 decks)

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