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Oral anatomy and histology > Introduction to Dentitions > Flashcards

Introduction to Dentitions Flashcards

1
Q

Parts of Tooth Assessment 5

A

Dental Charting: graphic representation of the condition of the patient’s teeth observed on a specific date

Care Planning: Using collection of data to formulate comprehensive treatment plan

Communication: Enhanced by accurate documentation

Legal Documentation: Patient’s record is a legal document admissible in court of law

Forensic Uses: Sometimes only means of identification

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2
Q

What teeth types are in each dentition

A

primary - 20: Incisors (8), Canines (4), Molars (8)

permanent - 32: Incisors (8), Canines (4), Premolars (8), Molars (12)

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3
Q

what are the tooth quadrants and associated tooth numbers

A

right maxillary quadrant: 1-8
left maxillary quadrant: 9-16
right mandibular quadrant: 25-32
left mandibular quadrant: 17-24

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4
Q

anterior teeth vs posterior teeth

A

Anterior teeth go from canine to canine

maxillary anterior: 6-11

mandibular anterior: 22-27

posterior teeth go from premolar to molar

maxillary posterior (right): 1-5
maxillary posterior (left): 12-16
mandibular posterior (right): 28-32
mandibular posterior (left): 17-21

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5
Q

what is the tooth designation system for primary/deciduous teeth vs permanent

A

primary uses letters (A-T)

permanent uses numbers (1-32)

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6
Q

what are the biting surfaces of teeth

A

anterior teeth (canine to canine): incisal surface

posterior teeth (premolar/molars): occlusal surface

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7
Q

crowns of all teeth have how many surfaces

A

5

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8
Q

based on the textbook, what are the 5 surfaces of the teeth

A

facial: labial or buccal
lingual/palatal
masticatory: occlusal or incisal
mesial
distal

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9
Q

facial surfaces can be __ or ____

A

buccal or labial

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10
Q

buccal surface

A

surfaces of premolars and molars that are closest to the cheek

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11
Q

labial surface

A

surface of incisors and canines that are close to the lips

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12
Q

palatal surface

A

toward the palate, used for maxillary teeth

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13
Q

lingual surface

A

The surface of the tooth toward the tongue. Used for mandibular teeth (bottom of mouth)

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14
Q

what are the proximal surfaces

A

mesial: toward the midline
distal: away from the midline

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15
Q

what are the 3 dentition PERIODS

A

primary dentition: 6 months to 6 years

mixed dentition: 6yrs-12 yrs

permanent dentition: 12 years on

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16
Q

describe primary dentition (7)

A

begins with the eruption of the mandibular central incisor

ends with eruption of first permanent tooth

20 teeth total

5 per quadrant (2 incisors, 1 canine, 2 molars)

calcification begins 4-5 months in fetal life to 3-4 years after birth

eruption happens in pairs

jaws are growing

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17
Q

describe mixed dentition

A

begins with eruption of permanent mandibular molar

ends with the loss of the last primary tooth

both primary and permanent teeth in oral cavity

jaws are growing (fastest rate)

awkward stage

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18
Q

what stage are the jaws growing at the fastest rate

A

mixed dentition

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19
Q

practical application for mixed dentition

A

tooth color changes > Parents want to know why their kids tooth changed

halitosis

size differences > becomes larger than baby teeth

tooth brush selection

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20
Q

what are the components of permanent dentition 6

A

begins with loss of last primary tooth

ends with eruption of last permanent tooth

32 total

16 in each arch

begins to calcify after birth until 25 years of age

jaw growth slows down and eventually stops

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21
Q

describe incisors 3

A

four in each arch, 8 total

designed to bite and cut

lingual fossa shaped as a shovel

22
Q

describe canines 6

A

2 in each arch, 4 total

for holding, grasping, piercing, tearing

longest teeth in the mouth from root to crown

cornerstone of the mouth

major influence on ones facial appearance

have one cusp (stated in textbook)

23
Q

which teeth are the best anchored

A

canines

24
Q

describe premolars (5)

A

4 in each arch, 8 total

AKA bicuspids (usually have 2 cusps)

has occlusal edges

grind food and assist canines in tearing

only found in permanent dentition

25
Q

t/f premolars are found in primary dentition

A

FALSE

26
Q

describe molars (7)

A

6 in each arch, 12 total

largest and strongest teeth

have 4 or more cusps

grind food

have occlusal edges

posteriorly located

jaw exerts strongest forces onto these teeth

27
Q

T/F molars look similar to each other

A

false

28
Q

describe enamel 4

A

covers the crown

thickest over the crown, gets thinner toward the cervical line

color: varies with thickness and mineralization, white=thick, yellow=thin

composition: 96% inorganic matter, 3% water, 1% organic matter

29
Q

describe dentin (5)

what lays superficial to it?

A

largest portion of the tooth

hard, dense, calcified tissue

softer than enamel, harder than cementum & bone

yellow in color, elastic in nature

Composition: 70% inorganic, 30% organic matter and water

covered by enamel on the crown and cementum on the root

30
Q

describe the types of dentin (3)

A

primary dentin: formed before the apex of the tooth is completed

secondary dentin: formed after completion of the apex and will form for the life of the tooth

reparative dentin: laid down in response to caries or trauma

31
Q

list the components of a tooth from deep to superficial

A

pulp
dentin
cementum(root) /enamel (crown)

32
Q

describe cementum 5

A

covers the root

could be voids that expose dentin

main function is to anchor, attaches tooth to alveolar bone

thinner at cervical line, thickens toward apex

composition: 65% inorganic, 23% organic, 12% water

33
Q

types of cementum

A

acellular: covers entire anatomical root

cellular: presents on apical 3rd of root, can reproduce itself

34
Q

describe pulp functions 4

A
  • nourishing
  • sensory
  • repairs dentin
  • main function to lay down dentin
35
Q

what is the cementoenamel junction

A

external line at the neck/cervix of the tooth. separates the enamel of the anatomic crown form the cementum of the anatomic root.

36
Q

what is the dentinoenamel junction

A

inner surface of the enamel that meets the dentin.

37
Q

what is the dentinocemental junction

A

part where outer line of dentin and inner line of cementum meet.

38
Q

what is the difference between the anatomic and clinical crown of the tooth

A

anatomic crown: the actual crown of the tooth that is covered by enamel, remains mostly constant throughout life of tooth, except for presence of attrition and physical wear

clinical crown: the part that you can SEE, above the gingiva, height is determined by the location of the marginal gingiva, can change over time due to recession

39
Q

when we talk about the crown which are we referring to

A

anatomic crown

40
Q

difference between anatomic and clinical root

A

anatomic: part that is covered by cementum

clinical: part of the root that is visible, can change over time via gingival recession

41
Q

define eruption

exfoliation

resorption

A

eruption: moving of a tooth through it’s surrounding tissue (when a tooth pierces the gum)

exfoliation: when you lose a tooth and the roots of the primary teeth are resorbed

resorption: removal of hard tissue/bone

42
Q

T/F the height of the CEJ curvature is lesser than the mesial side of the tooth than the distal

A

FALSE, the curvature is GREATER on the mesial side

43
Q

what is the contact area

interproximal space

A

part where two adjacent teeth physically touch

gap/space between two teeth

44
Q

posterior teeth have how many line angles per tooth, name them

A

8

mesiobuccal, distobuccal, mesiolingual, distolingual, mesio-occlusal, disto-occlusal, bucco-occlusal, and linguo-occlusal

45
Q

anterior teeth have how many line angles per tooth

A

6

mesiolabial, distolabial, mesiolingual, distolingual, labioincisal, and linguoincisal

46
Q

describe roots of the teeth 4

A

widest at the CEJ and caper towards the apex

have indentations or root concavities

teeth can be single rooted or multiple-rooted with bifurcation or trifurcation

anchored in the alveolar process (alveolus)

47
Q

define furcation

A

dividing point of roots of multirooted tooth

bifurcation - tooth with 2 roots
trifurcation- tooth with 3 roots

48
Q

succedaneous

nonsuccedaneous

A

permanent teeth with primary predecessors; premolars, canines, incisors

teeth that do not succeed or replace primary teeth; permanent molars

49
Q

impaction

A

unerupted or partially erupted tooth that is positioned against another tooth, bone, or even soft tissue so that complete eruption becomes impossible

50
Q

edentulous

partially edentulous

anodontia

A

complete loss of teeth

person is missing most of their teeth, not all

absence of a single tooth or multiple teeth due to lack of initiation; was born without it

Oral anatomy and histology (5 decks)

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