Dental Anatomy

Question 1

what surface of the maxillary 1st premolar has a more prominent root concavity that hosts a lot of missed deposits

Answer 1

mesial

Question 1

what is the mineral percent for enamel

Answer 1

96%

Question 2

what is the mineral percent for dentin

Answer 2

70%

Question 3

what is the mineral percent for cementum

Answer 3

50%

Question 4

how many centers of development do anterior teeth form from

Answer 4

4

Question 5

which teeth have a larger well developed cingulum

Answer 5

maxillary anterior teeth

Question 6

what is the height of contour

Answer 6

greatest bulge farthest from the center of the crown of the tooth

Question 7

where are marginal ridges located

Answer 7

mesial and distal borders on the lingual surface of anterior teeth and occlusal surface on posterior teeth

Question 8

what are triangular ridge

Answer 8

ridges from cusp tip to central groove

Question 9

what are transverse ridges

Answer 9

2 triangular ridges connected on the same side of a tooth

Question 10

what are oblique ridges

Answer 10

two triangular ridges connected across the tooth

Question 11

what incisors are the largest of all incisors

Answer 11

maxillary incisors

Question 12

what tooth is the second most congenitally missing

Answer 12

maxillary lateral incisor

Question 13

what is the longest tooth

Answer 13

maxillary canine

Question 14

what premolar can have 1 or 2 roots

Answer 14

maxillary 1st premolar

Question 15

what tooth is likely to have a 5th cusp called the cusp of carabelli

Answer 15

maxillary 1st molar

Question 16

what tooth has the largest crown in the permanent dentition

Answer 16

maxillary 1st molar

Question 17

what teeth are the 1st most congenitally missing

Answer 17

3rd molars

Question 18

what teeth are the smallest and most symmetrical

Answer 18

mandibular central incisors

Question 19

which canines (max or mandib) have the smoother lingual anatomy

Answer 19

mandibular

Question 20

what premolar can have 2 or 3 cusps creating U, H, or Y shaped grooves

Answer 20

mandibular 2nd premolars

Question 21

which tooth is known for being wider mesiodistally than buccolingually

Answer 21

mandibular 1st molar

Question 22

in general, which side of the tooth is the CEJ more prominent

Answer 22

mesial

Question 23

are maxillary molars and all premolars larger buccolingually or mesiodistally

Answer 23

buccolingually

Question 24

which tooth, because of the deep lingual fossae, are more likely to develop lingual caries

Answer 24

maxillary lateral incisors

Question 25

ameleogenesis imperfecta characteristics

Answer 25

-small, discolored, pitted teeth -pain due to exposed dentin -prone to breakage

Question 26

dentinogenisis imperfecta characteristics

Answer 26

-normal enamel thickness, but chips easily -blue grey or yellow brown color -no pulp chambers seen -mottled

Question 27

dentin dysplasia characteristics

Answer 27

-no sensitivity -normal crown size and color, but short roots

Question 28

hypoplastic (type 1) AI

Answer 28

enamel layer did not develop to normal thickness

Question 29

hypomaturation (type 2) AI

Answer 29

normal enamel thickness but chips easily

Question 30

hypocalcified (type 3) AI

Answer 30

normal thickness of enamel but poorly calcified

Question 31

type 1 DI

Answer 31

in people who have osteogenesis imperfecta

Question 32

type 2 DI

Answer 32

in people without another developmental disorder -missing pulp chambers

Question 33

type 3 DI

Answer 33

in people without another developmental disorder -large pulp chambers

Question 34

type 1 dentin dysplasia

Answer 34

radicular type -half moon pulp and normal crown and colors

Question 35

type 2 dentin dysplasia

Answer 35

coronal type -flame or bow tie chambers and does affect crown and color

Question 36

where is the supernumerary tooth, mesiodens, located

Answer 36

between the maxillary central incisors

Question 37

T or F: macrodontia is most common when only 1 tooth is bigger than normal

Answer 37

no, this is not common it usually affects multiple/ all teeth

Question 38

where is gemination most common

Answer 38

deciduous mandibular incisors and permanent maxillary incisors

Question 39

where is fusion most common

Answer 39

anterior teeth

Question 40

where is concrescence most common

Answer 40

maxillary molars

Question 41

where are enamel pearls most commonly found

Answer 41

furcation areas

Question 42

what syndrome is associated with taurodontism

Answer 42

down syndrome

Question 43

where is dens in dente most common

Answer 43

maxillary lateral incisors

Question 44

where is dens evaginatus most common

Answer 44

mandibular premolars

Question 45

what are features of enamel hypoplasia

Answer 45

dark spots or bands

Question 46

what are features of enamel hypocalcification

Answer 46

chalky and opaque appearance

Question 47

what teeth are most commonly effected by ankylosis

Answer 47

deciduous molars

Question 48

what is a pink/red appearance of a tooth a sign of

Answer 48

internal root resorption

Question 49

curve of spee is observing a line similar to a smile from which aspect

Answer 49

buccal aspect (side)

Question 50

curve of wilson is observing a line similar to an upward smile from which aspect

Answer 50

frontal view

Question 51

a crossbite refers to what relationship between the maxillary and mandibular teeth

Answer 51

maxillary teeth fall lingual to the mandibular teeth

Question 52

class 1 occlusion is defined as what

Answer 52

the MB cusp of the maxillary 1st molar fits into the buccal groove of the mandibular 1st molar

Question 53

class 2 occlusion is defined as what? and what do division 1 and division 2 define

Answer 53

the MB cusp of the maxillary 1st molar is in front of the buccal groove of the mandibular 1st molar division 1: upper incisors protrude division 2: upper incisors retrude

Question 54

class 3 occlusion is defined as what

Answer 54

MB cusp of the maxillary 1st molar is behind the buccal groove of the mandibular 1st molar

Question 55

what are characteristics of primary teeth as compared to permanent teeth

Answer 55

-smaller -whiter -thinner enamel -smoother cusps -larger pulp chambers -slimmer and more divergent roots -more spacing

Question 56

in general, the lingual height of contour for posterior teeth is in what 3rd (apical, middle, cervical)

Answer 56

middle 3rd