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Oral Anatomy > Overview of the Dentitions > Flashcards

Overview of the Dentitions Flashcards

1
Q

heterodont

A

having teeth that are different classes/types

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1
Q

homodont

A

having teeth that are anatomically the same

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2
Q

monophyodont

A

one set of teeth in a lifetime

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3
Q

diphyodonts

A

two sets of teeth in a lifetime

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4
Q

polyphyodonts

A

endless succession of teeth

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5
Q

oral cavity

A

lined with mucous membrane tissue
two major areas: vestibule and oral cavity proper

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6
Q

vestibule

A

space between teeth and inner mucosal lining of the cheeks and lips, bounded by lips and cheeks and gums and teeth

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7
Q

oral cavity proper

A

space contained within the upper and lower dental arches, bounded by palate and floor of mouth

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8
Q

maxillary arch

A

fixed, immoveable, part of skull

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9
Q

mandibular arch

A

moveable via temporomandibular joint

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10
Q

quadrants

A

quadrant 1: right maxillary quadrant
quadrant 2: left maxillary quadrant
quadrant 3: left mandibular quadrant
quadrant 4: right mandibular quadrant

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11
Q

anterior vs posterior teeth

A

canines and incisors are anterior teeth
premolars and molars are posterior teeth

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12
Q

sextants

A

S1- maxillary right posterior
S2- maxillary anterior
S3- maxillary left posterior
S4- mandibular left posterior
S5- mandibular anterior
S6- mandibular right posterior

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13
Q

primary dentition

A

temporary, deciduous/baby, 20 teeth

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14
Q

secondary dentition

A

permanent, adult, 32 teeth

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15
Q

mixed dentition

A

mix of primary and secondary teeth

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16
Q

when does the primary dentition period start

A

eruption of primary mand central incisor
~6 months-6 years

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17
Q

when does the mixed dentition period start

A

eruption of perm mand first molar
~6 years-12 years

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18
Q

when does the permanent dentition period start

A

shedding of last primary tooth
after ~12 years

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19
Q

succedaneous teeth

A

permanent teeth that succeed or replace primary teeth (5 in each quadrant: central, lateral, canine, and 2 premolars)

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20
Q

nonsuccedaneous teeth

A

permanent teeth that do not replace any teeth in the primary dentition (the three permanent molars)

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21
Q

succedaneous teeth are replaced by

A

20 deciduous teeth replaced by 20 permanent teeth
2 deciduous incisors replaced by 2 permanent incisors
1 deciduous canine replaced by 1 permanent canine
2 deciduous molars replaced by 2 premolars
3 permanent molars are not succedaneous

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22
Q

dentition

A

natural teeth in the jawbones

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23
Q

midline

A

midsagittal plane; median, center of the arch

24
Q

arches

A

maxillary and mandibular

25
Q

quadrant

A

2 per arch = 4 total

26
Q

sextants

A

3 per arch = 6 total

27
Q

alveolar process

A

bony extension for both maxilla and mandible that contains each tooth socket

28
Q

alveolus

A

bony socket for roots of tooth/teeth
held in the alveolar process with the periodontal ligament

29
Q

gingiva

A

ends where pale pink ends and becomes darker
gums
external portion of the periodontium

30
Q

periodontal ligament

A

joins the cementum to the alveolar bone

31
Q

anteriors

A

central incisors, lateral incisors, canines

32
Q

posteriors

A

premolars (bicuspids), molars

33
Q

form and function of teeth

A

mastication, esthetics, phonetics

34
Q

mastication

A

biting and cutting, piercing and tearing, grinding

35
Q

incisors

A

single rooted with an incisal edge, front of mouth, cut food without heavy force, central and lateral

36
Q

canines

A

cuspids, corners of each arch, cutting and tearing food, requires force, one canine per quad in each primary and secondary dentition

37
Q

premolars

A

cross between canines and molars, tear and hold food, broader surface for grinding food, two sets on permanent dentition, no premolars in primary dentition

38
Q

molars

A

larger than premolars, more cusps, chewing/grinding, two sets in the primary dentition; 3 sets in the secondary

39
Q

teeth protect and preserve the _______

A

periodontium

40
Q

teeth provide a ______ for food

A

pathway

41
Q

incisors shape

A

labial/lingual: trapezoid
proximal: triangle

42
Q

canines shape

A

labial/lingual: pentagon
proximal: triangle

43
Q

premolars shape

A

buccal/lingual: pentagon
proximal: trapezoid (Max), rhomboid (Mand)

44
Q

molars shape

A

buccal/lingual: trapezoid
proximal: trapezoid (Max), rhomboid (Mand)

45
Q

anatomical crown

A

part of the tooth that is usually covered by enamel

46
Q

clinical crown

A

the part of the tooth that projects/is visible above the gum

47
Q

anatomical vs clinical crown

A

clinical crown is part of the anatomical crown that is visible and not covered by gingiva

48
Q

root

A

anatomical root: part of the tooth that is covered with cementum and is found below the CEJ
clinical root: anatomical root covered by gingival tissue (not visible in the mouth)

49
Q

cementoenamel junction (CEJ)

A

line around perimeter of tooth where the enamel covering the crown of the tooth meets the cementum covering the root
debridement:
sensitivity, distinguish CEJ from hard deposit

50
Q

dentin

A

hard, calcified tissue covered by enamel and/or cementum
largest
harder than bone, softer than enamel

51
Q

dentino-enamel junction

A

boundary between the enamel and the underlying dentin

52
Q

pulp cavity/space

A

center of the tooth; entire space that is occupied by the pulp
most vital, living tissue
blood vessels and nerves
consists of: chamber, canal, horn

53
Q

DAQT system

A

D- Dentition
A-Arch
Q-Quadrant
T-Tooth

54
Q

palmer system

A

consists of a symbol designating the quadrant of the tooth and a number indicating the position from the midline
adult teeth 1–>8
primary teeth A–>E

55
Q

universal system

A

permanent teeth numbered 1–>32
primary teeth A–>T
count continues from quad 1–>2 then drops to quad 3

56
Q

international standards organization (ISO) system

A

by WHO, based on FDI
two-digit numbering system… first number is quadrant (#1-2-3-4), second number is the tooth from the midline of the face (#1-#8)
primary teeth first number is quadrant (#5-6-7-8), second number is tooth from midline (#1-#5)

57
Q

iso system for sextants

A

starts upper right posterior then moves anterior to upper left posterior then lower left posterior and around
03, 04, 05, 06, 07, 08

58
Q

most dental professionals will refer to the sextants numerically as the following

A

1, 2, 3, 4, 5, 6
upper right to upper left to lower left to lower right

Oral Anatomy (4 decks)

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