Orofacial Anatomy Exam 1

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110 Terms

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Medial

Toward midline

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Lateral

Away from midline

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Superficial

Toward surface

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Deep

Away from surface

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5

Quadrant 1

Right maxillary

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6

Quadrant 2

Left maxillary

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7

Quadrant 3

Left mandibular

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8

Quadrant 4

Right mandibular

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9

Infraorbital

Under eye

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10

Zygomatic

Bony support of cheek

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11

Frontal

Forehead, supraorbital ridge, and galbella

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12

Nasal

Apex, root, naris, septum, and ala

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13

Oral

Lips and oral cavity

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14

Mental

Chin and mandibular symphysis

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15

Vestibule

Space between cheeks and teeth/ lips

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16

Oral cavity proper

Teeth, tonsils, palatine tonsils

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17

Oral cavity

Lips and cheeks to palatine tonsils

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18

Oral pharynx

Shared by digestive and respiratory; palatine tonsils to back wall of throat

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19

Laryngeal pharynx

Base of tongue to opening of larynx

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20

Lips

Junction of skin and oral cavity

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21

Vermilion zone

Red area of lips

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22

Vermilion border

Where lips meet skin

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23

Philtrum

Cupid’s bow

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24

Labial commissure

Corners of mouth

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Tubercle of upper lip

Bottom of philtrum

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Nasiolabial sulcus

Smile lines

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27

Mental protuberance

Chin

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28

Labomental groove

Below lip and above chin

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Fordyce granules

ectopic/ misplaced sebaceous glands; bumps on labial mucosa or buccal mucosa

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30

Mucobuccal fold

Where cheek and alveolar mucosa meet

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Alveolar mucosa

Mucobuccal fold to gingiva; movable, thin, red

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Labial frenum

Connective tissue, fold

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33

Exostoses

Normal extra bone on the facial of mandible or maxilla

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34

Retromolar pad

Pad of tissue behind last molar

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35

Diastema

Large space from large/ strong frenum

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36

Parotid papilla

Opposite maxillary 2nd molar; opening for parotid gland

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Maxilla

2 bones sutured, non-movable

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38

Maxillary tuberosity

Behind maxillary 3rd molars

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39

Mandible

One bone, movable

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40

Hard palate

Anterior 2/3 of oral cavity proper

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41

Rugae

Ridges on roof of mouth

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Median palatine raphe

Midline elevation covers maxilla suture

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43

Greater palatine foramen

Lingual to 1st or 2nd molars

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Incisive papilla

Tissue in between and lingual to maxillary central incisors

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Fovea palatine

2 holes on posterior part of hard palate

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Torus palatinus

Excess bone on hard palate

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47

Palatoglossal

Anterior pillar

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48

Palatopharyngeal

Posterior pillar

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49

Fauces

Space between pillars

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50

Soft palate

Posterior 1/3 of oral cavity proper

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51

Pterygomandibular fold/ raphe

Behind maxillary tuberosity, separates soft palate from cheek, key injection site

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Base of tongue

Posterior 1/3 of tongue; outside of oral cavity in throat

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53

Body of tongue

Anterior 2/3 of tongue; common space for oral cancer

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54

Dorsal surface

Top of tongue

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55

Lateral surface

Side of tongue

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56

Ventral surface

Bottom of tongue

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57

Median lingual sulcus

Line on dorsum of tongue

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Sulcus terminalis

Separates base from body of the tongue (creates “v”)

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Foramen cecum

Bumps behind the sulcus terminalis

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Lingual frenum

Line underneath tongue when you hold it in the air

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61

Sublingual fold

Fold underneath tongue; perpendicular to lingual frenum

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Sublingual caruncle

Where sublingual salivary glands excrete

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63

Plica fimbriata

Finger-like projections on ventral surface

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64

Mandibular tori

Excess bone on lingual side of mandible

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Enamel

Hardest calcified tissue in body, makes up crown, avascular, 96% inorganic

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Cementum

Attaches teeth to bone, makes up root, hard tissue, 50% inorganic

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Anatomic crown

Whole crown covered in enamel

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Clinical crown

What is visible; the part of the tooth above the gingiva

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Anatomic root

Portion covered in cementum

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Clinical root

Un-erupted portion of tooth, not visible

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Dental pulp

Innermost soft tissue, non-calcified

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Dentin

Bulk of tooth, surrounds pulp, hard calcified tissue, 70% inorganic

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Secondary dentin

Formed in pulp chambers and canals after eruption

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Reparative dentin

Response to trauma/ caries

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75

Apical foramen

Where nerves and blood supply to tooth enterL

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Line junctions

Junction of 2 crown surfaces

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Point angles

Junction of 3 crown surfaces

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Heterodont

Teeth of different types

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Homodont

Teeth of same type

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Diphyodont

Successive sets of teeth

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81

Monophyodont

One set of teeth

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Polyphyodont

Multiple sets of teeth

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Incisors

Cut

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84

Canines

Hold/ grasp

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85

Premolars

Hold/grind

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Molars

Chew/ grind

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Primary/ deciduous dentition

20 teeth; no premolars (6 months-6 years)

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Permanent/ secondary dentition

32 teeth (last primary tooth exfoliates)

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Mixed dentition

Mix of permanent and primary teeth (6 years-12 years)

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Succedaneous teeth

Replace primary teeth

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Proximal contact areas

Where proximal surfaces of teeth touch one another(mesial or distal)

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Contact area

Flattened portion of the tooth where it touches the tooth next to it in the same dental arch

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Anterior facial contact area

Incisal one third

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Posterior buccal contact area

Middle one third

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95

Anterior incisal contact area

Centered between facial and lingual

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96

Posterior occlusal contact area

Slightly buccal to the center of the tooth

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Contact point

Where the occlusal cusp of one tooth touches the occlusal portion of another tooth in the opposing arch

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Interproximal spaces

Triangular-shaped spaces between teeth formed by bone on one side and the proximal surfaces and their contact area on the other side; filled with interdental gingiva

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Cervical embrasure

Occurs when there is gingival recession between teeth, and the interdental papilla and bone no longer fill the entire inter proximal space

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100

Embrasures

The spaces between teeth that are occlusal to the contact areas

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