Gpc Dental Tissues Exam 1: Definitions

Front 1

auricle

Back 1

oval flap of the external ear

Front 2

tragus of the ear

Back 2

portion of the quricle anterior to the external acoustic meatus is a smaller flap

Front 3

medial canthus

Back 3

inner angle or canthus of the eye

Front 4

lateral canthus

Back 4

outer corner of the eye or outer canthus where the upper and lower eyelids meet

Front 5

nasal ala

Back 5

winglike cartilaginous structures that bound the nares latererally

Front 6

labial commissure

Back 6

where the upper and lower lips meet at each corner of the mouth

Front 7

philtrum

Back 7

a verticle groove on the midline of the upper lip, extending downward from the nasal septum

Front 8

tubercle of the maxillary lip

Back 8

where the philtrum terminates, mid upper lip. the "v"

Front 9

vermillion zone

Back 9

Darker appearance of the lips

Front 10

vermillion border

Back 10

outline of the entire lip from the surrounding skin

Front 11

nasolabial sulcus

Back 11

groove running upward b/w the labial commissure and the ala of the nose

Front 12

labiomental groove

Back 12

a groove that separates the lower lip from the chin

Front 13

buccal mucosa

Back 13

mucosa that lines the inner cheek

Front 14

labial frenum

Back 14

fold of tissue or frenulum located at the midline b/w the labial mucosa and alveolar mucosa of the maxilla and mandible

Front 15

buccal frenum

Back 15

fold connecting alveolar ridge to the cheek separating labial from buccal

Front 16

canine eminence

Back 16

bony projection that covers that canine roots. only in maxillary arch

Front 17

maxillary tuberosity

Back 17

elevation of the posterior aspects of the maxillary

Front 18

retromolar area

Back 18

pad on mandibular where the wisdom tooth is

Front 19

muccobuccal fold

Back 19

fold in the vestibule where the labial or buccal mucosa meets the alveolar mucosa

Front 20

pterygomandibular fold

Back 20

fold of tissue in the oral cavity that covers pterygomandibular raphe (extends from the junction of hard and soft palate down the mandible just behind the most distal mandibular tooth. Stretches when patient opens mouth. covers a deeper fibrous structure and separates the cheek from the throat

Front 21

stensen's duct

Back 21

aka parotid duct. comes off the salivary gland

Front 22

parotid papilla

Back 22

small elevation of tissue that marks the opening of the parotid salivary glands and is located opposite the 2nd maxillary molar on the inner cheek

Front 23

linea alba

Back 23

white ridge of keratinized epithelium on buccal mucosa at the level where teeth occlude

Front 24

gingiva

Back 24

gum tissue composed of mucosa surrounding maxillary and mandibular teeth in alveoli and covering alveolar processes

Front 25

fordyce granules

Back 25

small yellowish elevations of sebaceous glands on oral mucosa

Front 26

hard palate

Back 26

anterior part of palate

Front 27

soft palate

Back 27

posterior part of palate

Front 28

palatine torus

Back 28

normal variation of bone growth noed on midline of hard palate

Front 29

incisive papilla

Back 29

small bulge of tissue at anterior hard palate

Front 30

palatine raphe

Back 30

midline ridge of tissue on hard palate that overlies bony fusion marked by median palatine suture

Front 31

palatine rugae

Back 31

firm, irregular ridges of tissue directly posterior to incisive papilla

Front 32

uvula

Back 32

midline muscular structure hanging down from posterior margin of soft palate

Front 33

oropharynx

Back 33

oral division of pharynx

Front 34

fauces

Back 34

opening posteriorly from the oral cavity proper into pharynx

Front 35

tonsils

Back 35

located superior and posterior walls of nasopharynx

Front 36

glossopalatine muscle (anterior pillar)

Back 36

anterior lateral folds of tissue in pharynx created by underlying muscle forming the fauces

Front 37

pharyngopalatine muscle (posterior pillar)

Back 37

posterior lateral folds of tissue in pharynx created by underlying muscle forming the fauces

Front 38

tongue

Back 38

prominent feature of oral cavity

Front 39

lingual frenum

Back 39

midline fold of tissue b/w ventral surface of tongue and the floor of the mouth

Front 40

sublingual caruncles

Back 40

an eminence on either side of the frenumlum of the tongue on which the major sublingual duct and the submandibular duct open. small papilla at anterior end of each sublingual fold

Front 41

plicae fimbriatae

Back 41

fold with fringelike projections on ventral surface of the tongue

Front 42

mandibular tori

Back 42

bone growth noted on lingual aspect of mandibular arch

Front 43

active eruption

Back 43

vertical tooth movement through oral tissue

Front 44

anatomical crown

Back 44

part of crown covered by enamel

Front 45

apex

Back 45

point or tip

Front 46

clinical crown

Back 46

part of anatomical crown visible in the oral cavity and not covered by gingival tissue

Front 47

contact area

Back 47

tooth anatomy where adjacent tooth crowns in same arch touch on each proximal surface

Front 48

diphyodonts

Back 48

having 2 sets of teeth

Front 49

exfoliation

Back 49

process by which decidious teeth are shed (fall out)

Front 50

heterodonts

Back 50

more than one tooth morphology

Front 51

line angle

Back 51

line formed by junction of 2 crown surfaces

Front 52

passive eruption

Back 52

takes place when gingiva recedes with no tooth movement

Front 53

polyphyodont

Back 53

many sets of teeth

Front 54

succedaneous

Back 54

permanent teeth with primary predecessors

Front 55

anomaly

Back 55

a deviation from the common rule, type, arrangement, or form

Front 56

antagonist

Back 56

a tooth in one jaw that articulates with another one in the other jaw

Front 57

bifurcated

Back 57

tooth having 2 branches

Front 58

centric occlusion

Back 58

voluntary position of dentition that allows maximal contact when teeth occlude

Front 59

cingulum

Back 59

raised and rounded area on the cervical third of lingual surface on anteriors

Front 60

contact area

Back 60

tooth anatomy where adjacent tooth crowns in same arch touch on each proximal surface

Front 61

crest of cuvature

Back 61

height of contour which is the greatest elevation of the tooth crown either incisocervically or occlusocervically

Front 62

crossbite

Back 62

maloclussion in which mandibular tooth or teeth are placed on masticatory surfaces of each dental arch

Front 63

curve of spee

Back 63

anteroposterior curvature produced by planes placed on masticatory surfaces of each dental arch

Front 64

curve of wilson

Back 64

concave curve produced when frontal section is taken through maxillary and mandibular molars

Front 65

cusp of carabelli

Back 65

small cusp on permanent maxillary 1st molar

Front 66

cusp ridge

Back 66

ridge that descend from each cusp tip on posteriors

Front 67

dentition

Back 67

natural teeth in jaws of either primary and permanent or mixed grouping of teeth

Front 68

developmental depressions

Back 68

depression usually evident in specific tooth area

Front 69

developmental groove

Back 69

primary groove that marks junction among developmental lobes on lingual surface of anteriors or occlusal table of posteriors

Front 70

diastema

Back 70

open contact that can exist b/w permanent maxillary central incisors

Front 71

edge to edge & end to end

Back 71

teeth that occlude without maxillary teeth overlapping mandibular teeth

Front 72

embrasure

Back 72

spaces formed from curvatures where 2 teeth in same arch contact

Front 73

fossa

Back 73

shallow, wide depressions on lingual surface of anteriors or occlusal table of posteriors

Front 74

fremitus

Back 74

a vibration felt on palpation

Front 75

furcation

Back 75

area b/w 2 or more root branches before division from root trunk

Front 76

interdigitate

Back 76

to become interlocked

Front 77

interproximal space

Back 77

area b/w adjacent tooth surfaces

Front 78

line angle

Back 78

line fromed by junction of 2 crown surfaces

Front 79

lobe

Back 79

large innert part of glands or regions of tooth during development

Front 80

malocclusion

Back 80

failure to have overall ideal from to the dentition while in centric occlusion

Front 81

mamelons

Back 81

rounded raised borders on mesial and distal parts of lingual surfaces of anteriors or occlusal table of posteriors

Front 82

marginal ridge

Back 82

rounded raised borders on mesial and distal parts of lingual surface of anteriors or occlusal table of posteriors

Front 83

mixed dentition

Back 83

both primary and permanent teeth are present

Front 84

mesial drift

Back 84

natural movement of teeth over time toward midline of the oral cavity

Front 85

mesial step

Back 85

terminal plane relationship with primary mandibular 2nd molar is mesial to maxillary molar

Front 86

distal step

Back 86

no terminal plane relationship exists because primary mandibular 2nd molar is distal to maxillary 2nd molar

Front 87

mesognathic profile

Back 87

facial profile in centric occlusion with slightly protruded jaws giving facial outline a relatively flat appearance or straight profile

Front 88

oblique ridge

Back 88

transverse ridge that crosses occlusal table obliquely from mesiolingual to distobuccal on most maxillary molars

Front 89

occlusion

Back 89

anatomical alignment of teeth and relationship to masticatory system

Front 90

open bite

Back 90

malocclusion with out anteriors occluding

Front 91

over bite

Back 91

maxillary arch vertically overlaps mandibular arch

Front 92

overjet

Back 92

maxillary arch horizontally overlaps mandibular arch

Front 93

pit

Back 93

patterns formed from pits and grooves on lingual surface of anteriors and occlusal surface of permanent posteriors

Front 94

point angle

Back 94

imaginary line formed by junction of 3 corwn surfaces

Front 95

prognathic profile

Back 95

facial profile with rather prominent madible and possibly normal or even retrusive maxilla or concave profile

Front 96

proximal surface

Back 96

mesial and distal surfaces b/w adjacent teeth

Front 97

retrognathic profile

Back 97

facial profile with protruding upper lip with recessive mandible and chin with convex profile

Front 98

ridge

Back 98

linear elevation on masticatory surfce of either anterior or posterior teeth

Front 99

transverse ridge

Back 99

ridge from by joining of 2 triangular ridges crossing occlusal table transversely or from labial to lingual outline

Front 100

triangular ridge

Back 100

cusp ridges that descend from the cusp tips toward the cental part of occlusal table

Front 101

trifurcated

Back 101

tooth that has 3 root branches

Front 102

underjet

Back 102

a malocclusion describing the positional relationship b/w the maxillary and mandibular incisors in which the maxillary incisors are measurably within the perimeter of the mandibular incisors