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Hygiene Sem 1 > Orofacial > Flashcards

Orofacial Flashcards

1
Q

Muccobuccal fold

A

Point where lips/cheeks turns to go toward gingival tissue

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2
Q

Alveolar mucosa

A

Mucosa lying against alveolar bone
Loosely attached and moveable

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3
Q

Mucogingival junction

A

Point where gingiva becomes tightly attached to the bone

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4
Q

Lateral borders

A

The teeth and mucosa confines the lateral borders of the oral cavity proper

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5
Q

Palatoglossal arch

A

The anterior pillar

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6
Q

Palatopharyngeal arch

A

Posterior pillar

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7
Q

Retromolar pad

A

Small elevation of tissue posterior to mand molars

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8
Q

Fauces

A

Spaces between left and right tonsils

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9
Q

Sublingual caruncles

A

Small elevations in each side of the base of the lingual frenum

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10
Q

2 divisions of oral cavity

A

Vestibule
Oral cavity proper

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11
Q

Oral cavity proper includes

A

Floor of the mouth
Soft/hard palate

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12
Q

3 categories of oral mucosa

A

Masticatory mucosa
Lining mucosa
Specialized mucosa

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13
Q

Specialized mucosa is found

A

Dorsum of the tongue

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14
Q

Masticatory mucosa is found?
Undergoes what?

A

Gingiva and hard palate
Undergoes trauma (keratinized)

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15
Q

4 areas of lining mucosa

A

Labial/buccal mucosa
Alveolar mucosa
Soft palate
Central surface of the tongue/floor of the mouth

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16
Q

Characteristics of lining mucosa

A

Loose
Flexible
Non keratinized

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17
Q

Fovea palatine

A

2 small depressions on either side of the midline

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18
Q

Beginning stages of the tongue development in utero happens

A

4.5weeks

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19
Q

Tongue is covered with what type of epithelium

A

Stratified squamous epithelium

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20
Q

4 types of papilla

A

Filiform
Fungiform
Foliate
Circumvallete

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21
Q

Circumvallete papilla

A

V shaped row circular raised elevations
Glands of Von ebner

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22
Q

Fungiform papillae

A

Tiny red raised spots
Sense of taste

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23
Q

Filiform papillae

A

No tastebuds- tactile sensation

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24
Q

Foliate papillae

A

side of tongue
Where oral cancer begins

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25
Q

Lingual tonsils

A

Located at base of tongue behind circumvallete papillae

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26
Q

Purpose of lymphoid tissue in lingual tonsils

A

Provides defence mechanism for infection

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27
Q

3 glands

A

Parotid
Sublingual
Submandibular

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28
Q

Parotid gland associated duct

A

Stensons duct

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29
Q

T/F parotid gland is the largest gland but only accounts for 25% of salivary volume

A

True

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30
Q

Submandibular gland accounts for what % of salivary volume

A

60-65%

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31
Q

Sublingual duct accounts for what % of salivary volume

A

10%

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32
Q

Clinical crown describes

A

The part of the crown visible above the gingiva

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33
Q

Anatomical crown

A

Portion of crown that is covered by enamel

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34
Q

4 tooth tissues

A

Pulp
Cementum
Enamel
Dentin

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35
Q

Secondary dentin forms after

A

Eruption

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36
Q

Reparative dentin or tertiary dentin is laid down in response to

A

Trauma or caries

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37
Q

Cementum’s main function

A

Provide a medium for attachment of the tooth to the alveolar bone

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38
Q

2 types of cementum

A

Cellular
Acellular

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39
Q

Acellular cementum contains

A

Sharpeys fibers

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40
Q

Odontoblasts are

A

Dentin forming cells

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41
Q

Incisors are intended to

A

Cut

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42
Q

Canines are intended to

A

Hold and grasp

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43
Q

Premolars are intended to

A

Hold and grind

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44
Q

Molars are intended to

A

Grind/chew

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45
Q

Tooth grows and develops from growth centres called

A

Lobes

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46
Q

Tubercles are

A

Small elevations of enamel on crown

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47
Q

Developmental grooves are

A

Lines that form when lobes fuse together

48
Q

Fossa is

A

Depression or conceits

49
Q

Cingulum are

A

Lingual lobe of max anterior teeth

50
Q

All cusps have how many ridges

A

4

51
Q

Line angle

A

Junction of 2 surfaces

52
Q

Point angle

A

Junction of 3 surfaces

53
Q

Tooth germs/tooth buds

A

Soft tissue that develops into a tooth

54
Q

When do tooth buds begin to grow within the alveolar process

A

6th week of fetal life

55
Q

Crypts

A

Early tooth socket

56
Q

What else is forming around the 6th week

A

Dental lamina
Dentin and enamel, followed by cementum

57
Q

Before root completion what type of dentin is formed at an early stage

A

Primary dentin

58
Q

When do primary teeth begin to calcify

A

4th or 5th month of fetal life

59
Q

Each tooth begins to develop from how many growth centers

A

4 or more

60
Q

Coalescence describes

A

Fusion of lobes

61
Q

Mamelons

A

Incisal ridges of labial development lobes separated by developmental grooves

62
Q

Anterior lobes

A

3 facial and 1 lingual

63
Q

Maxillary premolars lobes

A

3 facial 1 lingual

64
Q

Mandibular first premolar lobes

A

Same as maxillary 3 facial 1 lingual
Lingual cusp is smaller

65
Q

Maxillary 1st molar lobes

A

4 lobes:
2buccal, 2lingual

66
Q

Lobe of carabelli

A

On first maxillary molars

67
Q

Eruption deciduous central incisors

A

6-8months

68
Q

Eruption deciduous lateral incisors

A

10-16m

69
Q

Eruption deciduous 1st molar

A

14-18 months

70
Q

Eruption deciduous canines

A

17-23m

71
Q

Eruption deciduous second molars

A

2 years

72
Q

Eruption rules (3)

A

Mand precedes max
Both jaws erupt in pairs
Perm erupt first in girls (no difference in primary)

73
Q

What does deciduous canine eruption bring with them

A

Canine eminence (supporting bone)

74
Q

At what age do we except all deciduous teeth to have erupted

A

2.5 years

75
Q

Medial drift (permanent)

A

Tendency of the permanent molars to have an eruptive force toward midline

76
Q

Eruption permanent max centrals

A

7-8 years

77
Q

Eruption permanent max laterals

A

8-9 years

78
Q

Eruption permanent max canines

A

11-12

79
Q

Eruption perm max and mand premolars

A

10-12

80
Q

Eruption perm max 1st molars

A

6years

81
Q

Eruption perm max 2nd molars

A

12-13

82
Q

Eruption perm mand central

A

6-7

83
Q

Eruption perm mand laterals

A

7-8

84
Q

Eruption perm mand canine

A

9-10

85
Q

Common exception to the rule of mandibular teeth preceding the maxillary is

A

Maxillary premolars (10-11) often preceded mandibular premolars (10-12)

86
Q

Periodontium divided into 2 units

A

Gingival unit
Attachment unit

87
Q

Gingival unit consists of

A

Free and attached gingiva

88
Q

Attachment unit consists of

A

Cementum
PDL
Alveolar bone

89
Q

Contact areas describes

A

Medial and distal touching of adjacent teeth

90
Q

Contact point refers to

A

Occlusal cusp of 1 tooth touches occlusal portion of another tooth in opposing arch

91
Q

Proximal contact areas are where on the tooth

A

Widest portion and greatest curvature

92
Q

Interproximal spaces are normally filled with

A

Interdental papilla

93
Q

Cervical embassure (void) is characterized by

A

Gingival recession
(Papilla and bone no longer fill entire Interproximal space)

94
Q

Crest of curvature

A

Widest bulkiest part of the crown

95
Q

Crest of curvature is the same as

A

Height of contour

96
Q

Facial and lingual contours are correct then

A

Proper food deflection
Tissue stimulation
Sulculs/gingival protection
Tooth cleansing

97
Q

Curvature of CEJ on proximal surfaces depends on

A

Height of contact areas
Diameter of crown labiolingually or buccolingually

98
Q

Curvature of CEJ in anterior teeth is grater than

A

Posterior

99
Q

Medial curvature of anterior teeth greater than distal curvature by

A

1mm

100
Q

Why is CEj less curved in posterior teeth

A

Wider buccolingually, have more support and don’t need raised CEJ

101
Q

Self cleansing qualities of teeth

A

Smoothness of enamel helps to maintain bacteria free
Shape of crown deflects food onto tissue at proper angle

102
Q

Self cleansing qualities of canines

A

Piercing tool: forces food off cusp into cingulum and gingiva

103
Q

Self cleansing qualities of premolars and molars

A

Deflect food onto occlusal surface for chewing and grinding

104
Q

Self cleansing qualities of pits and fissures

A

Help dissipate/scatter extreme occlusal forces from chewing/grinding
SPILLWAYS

105
Q

Diastema vs open contact

A

Large vs small space

106
Q

Curvature and the periodontium: if deflection of food is at an extreme angle what can result due to what?

A

Recession can result due to lack of cleansing by friction

107
Q

At 16 months primary molars erupt and establish

A

Vertical height of primary occlusion
Intercuspation of M-D and B-L relationship (this determines how upper and lower teeth occlude with lower teeth)

108
Q

Buccal cusps of mandibular posterior teeth interlock between buccal and lingual cusps on maxillary teeth

A

Intercuspation

109
Q

Primary dentition erupts in a more ___ position than permanent replacements

A

Upright

110
Q

3 possible anterioposterior molar relationships in primary occlusion

A

Mesial step
Flush terminal plane
Distal step

111
Q

Most common primary occlusion

A

Mesial step

112
Q

Describe mesial step

A

2nd primary mandibular molar (distal surface) are situated more mesial than max molars

113
Q

Describe distal step

A

2nd primary mand molars are situated more distal than max molars

114
Q

Primate space

A

Largest spaces found mesial to max primary canine and distal to mand canines

115
Q

Leeway space

A

Extra space deciduous canines and molars occupy to help save room for permanent successors

Hygiene Sem 1 (22 decks)

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