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Dental Embryology, Histology, and Anaotmy > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

Oral cavity divisions

A

Vestibules, teeth, jaws with alveolar processes, oral cavity proper

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2
Q

Boundaries of oral cavity

A
  • Lips = anterior boundary
  • Throat = posterior boundary
  • Cheeks = lateral boundaries
  • Roof of mouth (palate) = superior boundary
  • Floor of mouth = inferior boundary
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3
Q

Facial structures

A

Those closest to facial surface

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4
Q

Labial structures

A

Those closest to the lips

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5
Q

Buccal structures

A

Those closest to inner cheek

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6
Q

Lingual structures

A

Those closest to tongue

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7
Q

Palatal structures

A

Lingual structures closest to tongue

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8
Q

Vestibules

A

Upper and lower horseshoe-shaped spaces b/w lips and cheek
- There is maxillary vestibule and mandibular vestibule
- Lined by oral mucosa (mucous membrane)

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9
Q

Labial mucosa

A

Lines inner part of lips, pinkish
- Continuous w/ buccal mucosa

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10
Q

Buccal mucosa

A

Lines inner cheek, pinkish
- Continuous with labial mucosa

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11
Q

Mastication

A

Chewing

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12
Q

Buccal fat pad

A

Dense pad of fat tissue at posterior part of each vestibule
- Protective cushion during mastication
- Covered by buccal mucosa

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13
Q

Parotid papilla

A
  • Small elevation of tissue
  • Protects opening of parotid duct of the parotid salivary gland
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14
Q

Another name for parotid duct

A

Stensen duct

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15
Q

Vestibular fornix

A

Where pinkish labial mucosa or buccal mucosa meets redder alveolar mucosa
- (Where redder meets lighter)

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16
Q

Mucobuccal fold

A

???

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17
Q

Fordyce spots/granules

A
  • Small yellowish elevations on the oral mucosa
  • Represent deeper deposits of sebum from trapped or misplaced sebaceous gland tissue
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18
Q

Linea alba

A
  • White ridge of calloused tissue (or hyperkeritanization)
  • Extends horizontally at the level where maxillary and mandibular teeth come together/occlude
  • Also considered occlusal plane
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19
Q

Maxilla

A
  • Nonmovable articualtion
  • Has body of maxilla (superior to teeth, contains maxillary sinus)
  • 2 bones that are sutured together during development
  • Has body and 4 processes
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20
Q

Mandible

A
  • Single bone
  • Moveable articulation w/ temporal bones at each temporomandibular joint (TMJ)
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21
Q

Alveolar process

A
  • Bony extension for both maxilla and mandible
  • Aka alveolar bone
  • Contains ea. tooth socket (aka alveolus)
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22
Q

Periodontal ligament (PDL)

A
  • Holds tooth in alveolar socket
  • Fibrous structure
  • Allows slight movement within alveolus while providing support
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23
Q

Mature and fully erupted teeth contain these two things

A

Crown and root

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24
Q

Crown

A
  • Made of enamel (very hard outer layer) and dentin (moderately hard inner layer)
  • Pulp inside dentin (soft, innermost)
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25
Q

Cementum

A

Outermost layer of root
- (Dentin still covers soft tissue of pulp under cementum)
- Much darker than enamel

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26
Q

Dental arches

A

Alveolar processes with teeth in the alveoli
- Maxillary arch
- Mandibular arch

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27
Q

Maxillary tuberosity

A

Tissue covered elevation of bone distal to last tooth of maxillary arch

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28
Q

Retromolar pad

A

Dense pad of tissue located distal to the last tooth of mandibular arch

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29
Q

Tooth types in both arches of children teeth

A
  • Incisors
  • Canines
  • Molars
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30
Q

Tooth types in both arches of adult permanent teeth

A
  • Incisors
  • Canines
  • Molars
  • Premolars
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31
Q

Anterior teeth

A

Front of mouth
- 6-11, 22-17 (from canine to canine)

32
Q

Posterior teeth

A

Back of mouth
- 1-5, 12-16, 17-21, 28-32 (molars and premolars)

33
Q

Artery that all permanent mandibular teeth are supplied by

A

Branches of inferior alveolar artery

34
Q

Arteries that supply the permanent maxillary anterior teeth and the permanent maxillary posterior teeth

A

Anterior superior alveolar artery, Posterior superior alveolar artery

35
Q

Veins that drains maxillary and mandibular teeth

A

Posterior superior alveolar vein, inferior alveolar vein

36
Q

Exostoses

A
  • Variation present on facial surface of alveolar process of maxillary arch
  • Localized developmental growths of bone covered in oral mucosa
  • Possible hereditary etiology
  • May be associated w/ occlusal trauma
  • Can be single or multiple, unilateral or bilateral
  • Appear on radiographs as radiopaque (light) areas
37
Q

Mandibular torus

A
  • Variation on lingual surface of mandibular arch
  • Developmental growth of bone
  • Possible hereditary etiology
  • Similar to exostoses
  • May also be associated w/ grinding (bruxism)
38
Q

Gingiva

A

Soft tissue gums
- Composed of firm pink oral mucosa
- Types are attached, marginal, interdental

39
Q

Attached gingiva

A

Gingival tissue that tightly adheres to alveolar processes surrounding roots of teeth
- Inc. maxillary tuberosity and retromolar pad

40
Q

Mucogingival junction

A
  • Scalloped shaped
  • Line of demarcation b/w attached gingiva (firmer, pinker) and alveolar mucosa (redder) that lines vestibules
41
Q

Marginal (free) gingiva

A

Forms cuff above neck of the tooth

42
Q

Free gingival groove

A

Separates marginal gingiva from attached gingiva
- Varies in depth according to area of oral cavity
- Esp. prominent on mandibular anterior teeth and premolars
- Where you put probe

43
Q

Free gingival crest

A

Most coronal part of marginal gingiva

44
Q

Interdental gingiva

A

Gingival tissue b/w adjacent teeth adjoining attached gingiva
- Each extension = interdental papilla

45
Q

Gingival sulcus

A

Rounded space that the circular inner surface of gingival tissue of ea. tooth faces

46
Q

Oral cavity proper

A

Inside of mouth
- Enclosed anteriorly by maxillary and mandibular arch

47
Q

Fauces

A

Opening from oral cavity proper into pharynx (throat)
- Formed laterally on ea. side by anterior faucial pillar and posterior faucial pillar

48
Q

Palatine tonsils

A

Located b/w anterior and posterior faucial pillars

49
Q

Palate

A

Roof of mouth
- Separates oral cavity from nasal cavity

50
Q

Hard palate

A

Bony, whiter anterior arched part
- Shows absence of mucogingival junction on palatal aspect
- Palatal attached gingiva’s mucosa blends w/ mucosa of hard palate

51
Q

Incisive papilla

A

Small bulge of tissue at most anterior part of hard palate
- Lingual to anterior to teeth

52
Q

Palatine rugae

A

Firm irregular ridges of tissue radiating from incisive papilla and raphe
- Directly posterior to papilla

53
Q

Soft palate

A

Yellower, looser, and softer posterior part of palate

54
Q

Uvula

A
  • Midline muscular structure
  • Hangs down from posterior margin of soft palate
55
Q

Median palatine raphe

A

Midline ridge of tissue that runs full length of the palate from the incisive papilla to uvula
- Overlies bony fusion of the palate

56
Q

Pterygomandibular fold

A

Extends from junction of hard and soft palates down to mandible
- Just posterior of most distal mandibular tooth
- Stretches when mouth is open wider
- Covers deep fibrous structure/separates cheek from the pharynx (throat)

57
Q

Palatal torus

A

Similar to mandibular torus, less common variation on midline of hard palate

58
Q

Tongue

A

Prominent feature of oral cavity proper
- Base of tongue
- Body of tongue
- Apes of tongue

59
Q

Base of tongue

A
  • Posterior 1/3 of tongue
  • Pharyngeal part of tongue
  • Attaches to floor of mouth
60
Q

Body of tongue

A
  • Anterior 2/3 of tongue
  • Lies within oral cavity proper
61
Q

Apex of tongue

A

Tip of tongue

62
Q

Dorsal surface of tongue

A
  • Top of tongue
  • Has median lingual sulcus
63
Q

Median lingual sulcus

A

Midline depression on dorsal surface of tongue

64
Q

Lingual papillae

A

Small elevated structures of specialized mucosa (some associated w/ taste buds)

65
Q

Filiform lingual papillae

A
  • Slender, threadlike, whitish
  • Give dorsal surface velvety texture
66
Q

Fungiform lingual papillae

A

Reddish small mushroom-shaped dots on dorsal surface

67
Q

Sulcus terminalis

A
  • Inverted v-shaped groove on dorsal surface of tongue
  • Separates base and body of tongue
68
Q

Circumvallate lingual papillae

A
  • 10-14 larger mushroom shaped lingual papillae w/ tastebuds
  • Line up along anterior side of sulcus terminalis on body of tongue
69
Q

Foramen cecum

A

Where sulcus terminalis points backward toward throat (small pit-like depression)

70
Q

Lingual tonsil

A

Irregular mass of tissue
- Farther posteriorly on dorsal surface of base of tongue

71
Q

Type of papillae on lateral side of tongue

A

Foliate lingual papillae (vertical ridges)

72
Q

Present on underside (ventral surface) of tongue

A

Large, visible blood vessels, deep lingual veins

73
Q

Plica fimbriata

A

Fringe-like projections, lateral to ea. deep lingual vein

74
Q

Floor of mouth

A

Located in oral cavity proper, infeior to ventral surface of tongue

75
Q

Lingual frenum

A

Anterior midline fold of tissue b/w ventral surface of tongue and floor of mouth (tongue tied if too short)

76
Q

Sublingual fold

A

Ridge of tissue on ea. side of floor of mouth
- Joins in v-shaped configuration extending from lingual frenum to base of tongue

77
Q

Know pharyngeal divisions

Dental Embryology, Histology, and Anaotmy (5 decks)

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