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Oral Anatomy > CLO 3 > Flashcards

CLO 3 Flashcards

1
Q

Incisors

A

Designed to cut. Shaped like a shovel

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2
Q

Canines

A

Holding/grasping teeth
Longest tooth
Most stable tooth

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3
Q

Premolars

A

Have 2 or 3 cusps
Buccal cusps hold food
Lingual cusps grind food

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4
Q

Molars

A

4 or 5 cusps
Chew or grind food

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5
Q

Vestibule

A

The (potential) space that exists between the lips/cheeks and the teeth

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6
Q

Lingual

A

Faces the tongue

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7
Q

Facial

A

Faces the lip or cheek

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8
Q

Labial

A

Faces the lip or cheek (front teeth only)

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9
Q

Buccal

A

Faces the cheek (posterior teeth only)

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10
Q

Proximal

A

Faces the neighbouring tooth in the same arch
Medial or distal

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11
Q

Occlusal

A

Biting or chewing surface for posterior teeth

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12
Q

Tooth tissues (4)

A

Enamel, dentin, cementum, dental pulp

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13
Q

Enamel

A

Forms the outer surface of the crown
Thickest ver the cusp, thins towards the cervical line
Thicker ______ appears white, thinner ______ has more colour varieties

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14
Q

Which tooth tissue is the hardest tissue in the human body and composed of 96% inorganic and 4% organic matter and water

A

Enamel

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15
Q

Dentin

A

Softer than enamel but harder than cementum or bone
Hard, dense, calcified tissue
Yellow in colour and elastic in nature

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16
Q

What tissue is composed if 70% inorganic and 30% organic matter

A

Dentin

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17
Q

Secondary dentin

A

Normal process of aging
Forms throughout life after the tooth erupts because the pulp recedes

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18
Q

Reparative/tertiary dentin

A

Formed in response to trauma or caries
Harder of the two (secondary and tertiary dentin)

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19
Q

Cementum

A

Bone like substance that covers the root
Function: provide a medium for the attachment of the tooth to alveolar bone
Gives the tooth a mechanism of anchorage

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20
Q

What is the union of cementum and dentin called?

A

Dentinocemental junction (DEJ)

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21
Q

What tissue is composed of 45-50% inorganic and 55% organic matter?

A

Cementum

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22
Q

What are the two types of cementum?

A

Acellular (covers the entire anatomic root, part if the attachment system of the tooth)
Cellular (confined to the apical third of the root, can reproduce itself)

23
Q

Pulp

A

Surrounded by dentin
Divided into chambers and canals (aka root canals)

24
Q

What is pulp composed of? (5)

A

Blood vessels
Lymph vessels
Odontoblasts (dentin forming cells)
Nerve tissue
Connective tissue

25
Q

Circumvallate papillae

A

-13 V-shaped rounded elevations
-point of the V shape is posterior
-divides the anterior 2/3 from the posterior 1/3
-Taste receptors (BITTER)

26
Q

Fungiform papillae

A

-anterior 2/3 of the tongue
-round mushroom raised red spots
-taste receptors (SWEET & SALTY)
-para kerantinized or keratinized epithelium

27
Q

Filiform papillae

A

-remainder of the anterior 2/3 (median)
-tiny para keratinized to keratinized pointed projections
-NO taste

28
Q

Foliate papillae

A

-few taste buds (SOUR)
-more red in colour
-area to detect for oral cancer

29
Q

Lingual frenulum

A

Fold of tissue extending from near the tip of the tongue down to the floor of the mouth

30
Q

Sublingual caruncle

A

Small elevation on each side at the base of the lingual frenum
(Opening for ducts of the two major salivary glands)

31
Q

The two major salivary glands

A

Submandibular and sublingual glands

32
Q

Sublingual fold

A

Fold of tissue extending from sublingual caruncle back along floor of the mouth on either side

33
Q

Cementoenamel junction (CEJ)

A

The line where the crown and root are joined

34
Q

Crown

A

Covered by enamel
The clinical _____ is seen above the gingiva (gum)

35
Q

Root

A

Covered in cementum
Can have single or multiple
Each one has one apex or terminal end

36
Q

Alveolar process

A

The portion of the jaw that supports teeth

37
Q

Alveolus

A

The bony socket in which the tooth fits

38
Q

Function of teeth (5)

A
  1. Protecting the oral cavity
  2. Acquiring and chewing food
  3. Aiding the digestive system in breaking down food
  4. Functioning in communication
  5. Esthetics
39
Q

Anterior teeth

A

-incisors and canines
-have 4 surfaces and a ridge

40
Q

Posterior teeth

A

-premolars and molars
-have 5 surfaces

41
Q

Cervix

A

Is in the cervical area

42
Q

Cervical line

A

Line around the crown

43
Q

Landmarks

A

Crowns formed from fusion of lobes
Developmental grooves remain after fusion

44
Q

Oral cavity

A

Begins at lips and cheeks and extends posteriorly to the area of palatine tonsils

45
Q

Oral cavity proper

A

-area surrounded by teeth or alveolar ridges back to palatine tonsils
-includes region from the floor of mouth upward to hard and soft palates

46
Q

Vermillion zone

A

Transitional zone of reddish tissue between lips and philtrum

47
Q

Lips

A

-Vestibular anterior border
-Junction between skin of the face and mucosa of the oral cavity

48
Q

Philtrum

A

Indentation at midline on skin of the upper lip, derived from the embryonic medial nasal processes

49
Q

Cheeks

A

-vestibular lateral border
-bucca

50
Q

Vestibular posterior border

A

The anterior border of ramus of the mandible covered with soft tissue

51
Q

Mucobuccal (mucolabial fold)

A

Mucosa of the lips or cheeks that turns toward the gingival tissue

52
Q

Alveolar mucosa

A

Moveable mucosa lying against alveolar bone
Reddish in colour

53
Q

Mucogingival junction

A

Where alveolar mucosa becomes tightly attached to bone, beginning of gingiva

Oral Anatomy (2 decks)

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