Enamel

Question 1

Calcification begins at _____

Answer 1

Cusp tips and moves down (incisal edges first)

Question 2

Timing of calcification?

Answer 2

Long process

Question 3

What promotes calcification?

Answer 3

Proteins- don’t worry about specific ones

Question 4

Ealry maturation stage

Answer 4

loss of organic matter and water and influx of mineral salts

Question 5

Know eruption sequences!

Question 6

If a patient is missing a tooth which stage of development was disturbed? When?

Answer 6

Initiation- same for extra tooth

in utero-know when

Question 7

Has an extra tooth? which stage

Answer 7

initiation-specifically bud stage

Question 8

patient has a weird shaped tooth? (peg lateral)

Answer 8

Morphodifferentiation

Question 9

If a patient has weird colored teeth, which stage?

Answer 9

Apposition-genetic

Question 10

One tooth weird color?

Answer 10

Maybe calcification

Question 11

Patient is 16 and tooth is impacted which stage is disturbed?

Answer 11

eruption

Question 12

Hypodontia and Anodontia affects what (%)

Answer 12

primary teeth 0.1-.7%

Permanent 2-9%

Question 13

Most likely to be missing

Answer 13

3rd molars > upper laterals > 2nd premolars > lower centrals

Question 14

Syndromes with hypodontia

Answer 14

Ectodermal dysplasia and orofacial clefts

Question 15

Dental anomalies with initiation

Answer 15

hypodontia and supernumerary

Question 16

Anomalies with proliferation

Answer 16

gemination and fusion

Question 17

Anomalies with Morphodifferentiation

Answer 17

Macrodontia, microdontia, dens in dente, dens evaginatus, talon cusp

Question 18

Anomalies of aposition/calcification-with enamel

Answer 18

amelogenesis imperfecta, molar-incisor hypomineralization, fluorosis, tooth discoloration

Question 19

anomalies of aposition and calcification of dentin

Answer 19

dentinogenesis imperfecta, dentinal dysplasia

Question 20

Supernumerary teeth %’s

Answer 20

primary teeth .3-.8%

Permanent 1-3.5%

Question 21

Supernumeray more common in which jaw? %?

Answer 21

Maxilla-98%

Question 22

Mesiodens

Answer 22

supernumerary teeth in the midline

Question 23

Shape of supernumerary teeth

Answer 23

normal or conical/tuberculate

Question 24

Syndrom of supernumary

Answer 24

clediocranial dysplasia

Question 25

cleidocranial dysplasia

Answer 25

a shit ton of extra teeth-commonly causes lots of impaction

Question 26

Double tooth-two options

Answer 26

fusion or gemination

Question 27

% of double teeth prim and perm

Answer 27

2.5% prim | .2% permanent

Question 28

Fusion

Answer 28

joining of two tooth germs-usually two teeth of normal series-2 roots

Question 29

number of roots in fusion

Answer 29

2

Question 30

number of teeth in mouth with fusion

Answer 30

normal - 1

Question 31

Gemination

Answer 31

two tooth buds from a single tooth germ-normal number of teeth-one root canal

Question 32

number of root canals in gemination

Answer 32

1-tooth number normal tho

Question 33

macrodontia

Answer 33

tooth larger than normal-NOT fusion or gemination

Question 34

Syndromes of Macrodontia

Answer 34

KBG syndrome, hemi facial hyperplasia

Question 35

% of macro dontia

Answer 35

1.1% in permanent

Question 36

Microdontia and %

Answer 36

Small tooth- 2.0% in perm

Question 37

Most common tooth of microdontia

Answer 37

max lat (peg) and 3rd molars

Question 38

Syndrome of microdontia

Answer 38

pituitary dwarfism

Question 39

Dens in dente

Answer 39

developmental invagination in the cingulum pit

Question 40

% of perm teeth with dens in dente

Answer 40

4.0%

Question 41

Most common tooth with dens in dente

Answer 41

max lat

Question 42

Dens evaginatus

Answer 42

tubercle projecting from the occlusal surface

Question 43

Commonality of dens evaginatus

Answer 43

~4%

Question 44

Dens evaginatus affects what race commonly

Answer 44

asian

Question 45

Most common tooth of dens evaginatus

Answer 45

premolars

Question 46

Asians most commonly have this defect

Answer 46

dens evaginatus

Question 47

Talon cusp and %

Answer 47

hornlike projection of the cingulum ~1-2%

Question 48

Most common tooth of talon cusp

Answer 48

max cent incisor

Question 49

Amelogenesis imperfecta

Answer 49

inherited defect of enamel

Question 50

Prevalence of amelogenesis imperfecta

Answer 50

1:14,000

Question 51

Teeth affected by amelogenesis

Answer 51

prim and perm

Question 52

Phenotypes of amelogenesis

Answer 52

slide 49

Question 53

hypoplastic

Answer 53

50

Question 54

Hypomaturation

Answer 54

insuficient removal of enamel proteins causing poor crystal quality causing normal thickness but soft and rough surface

Question 55

Phenotype of hypomaturation

Answer 55

yellow-brown friable enamel enamel is rapidly lost by attrition and teeth are sensative anterior open bite is infrequent

Question 56

Hypocalcified phenotype

Answer 56

insufficient calcification of enamel --> normal thickness but friable

Question 57

Visual of hypocalcified

Answer 57

yellow brown or orange brown enamel lost by attrition-teeth sensative ant open bite frequent!!! Teeth acumulate calculus deposits

Question 58

Molar incisor hypomineralization and prevelance

Answer 58

localized opacity or breakdown in permanent molars and incisors---prevalence of 10% very high

Question 59

etiology of molar incisor hypomineralization

Answer 59

disturbance of tooth formation (i.e. high fever) between birth and 1st year

Question 60

MIH (molar incisor hypomin) enamel thickness and surface

Answer 60

normal thickness-smooth and white, brown or yellow

Question 61

boundary adj to normal enamel

Answer 61

distinct boundary

Question 62

breakdown in MIH?

Answer 62

may or may not be

Question 63

where is opacity in MIH?

Answer 63

incisal 1/3

Question 64

restoration in perm molars of MIH

Answer 64

atypical or extensive caries

Question 65

Enamel Hypoplasia

Answer 65

defect in quantity of enamel-caused by intitial failure of deposition of enamel protein or mineralization defect

Question 66

Enamel hypoplasia general or localized?

Answer 66

localized to one tooth

Question 67

Enamel hypoplasia is related with _____ of the primary dentition

Answer 67

dental trauma

Question 68

fluorosis

Answer 68

slide57

Question 69

tooth discoloration

Answer 69

59

Question 70

dentinogenesis imperfecta

Answer 70

61

Question 71

Dentinal dysplasia and prevalence

Answer 71

inherited defect of dentine-1:100,000-primary and perm