Tooth Eruption

Question 1

eruption of deciduous teeth happens _____ to ______

Answer 1

medial, lateral

Question 2

eruption of permanent teeth happens ______ to _______ with the exception of the _______

Answer 2

medial, lateral, 1st premolar

Question 3

early tooth eruption is ________ however early loss of a primary tooth may lead to early eruption of permanent tooth

Answer 3

not common

Question 4

late eruption of teeth is more common and can be caused by _______ deficiencies, _______ and ________ deficiencies

Answer 4

nutrition, genetics, metabolic

Question 5

tooth _______ is a misalignment if tooth orientation

Answer 5

impaction

Question 6

succedaneous and nonsuccedaneous developement of permant teeth form from the ________ that forms off the initial bud

Answer 6

successional lamina

Question 7

considerable change in tooth positioning is needed for a tooth to become functional and relocate through ______, _______ tissue and ______ to reach the occlusal plane

Answer 7

bone, connective, epithelium

Question 8

tooth germs of permanent teeth develop on the _______ side of the primary teeth

Answer 8

lingual

Question 9

the jaw continues to grow until the age of ______

Answer 9

20

Question 10

maxillary molars face ________ at first until there is enough room for them to move

Answer 10

distally

Question 11

the three stages of tooth eruption are the _________ stage, the _______ stage, and the _______ stage

Answer 11

pre-eruptive, eruptive, post-eruptive

Question 11

mandibular molars face in a ______ direction until there is enough room

Answer 11

mesial

Question 12

the pre-eruptive stage is the changing in the ______ of the tooth prior to eruption

Answer 12

location

Question 12

the eruptive stage is reflective of the movement of the tooth as it changes position in the jaw to reach the ________

Answer 12

occlusal plane

Question 13

the post-eruptive stage is the changing in the position of functional teeth as the _______ and in subsequent use of the dentition

Answer 13

jaw grows

Question 14

in the pre-eruptive stage the teeth move in two ways which are _______ and ________

Answer 14

bodily movement, eccentric growth

Question 15

bodily movement is the shift in the location of the _________ within the developing jaw

Answer 15

entire tooth germ

Question 16

eccentric growth is the relative growth of _______ of a tooth in relation to the rest of the tooth resulting in a different ______ of the tooth

Answer 16

one part, center of gravity

Question 17

during eccentric movement the _______ and the center of the tooth will change

Answer 17

root elongates

Question 18

premolars erupt under the _______, and much of the root of the primary molar is _______

Answer 18

primary molars, resorbed

Question 19

the gubernacular cord is an original structure of the _______ which undergoes apoptosis and their remnants were organized in the form of ________ and strands that lined up, leaving the reduced epithelium of the enamel organ towards the oral mucosa

Answer 19

dental lamina, epithelial islets

Question 20

the gubernacular cord is the ________ for permanent teeth and is composed of a fibrous conjunctive tissue containing _______ nerves, _______ and ______ vessels

Answer 20

path of eruption, peripheral, blood, lymphatic

Question 21

gubernacular cords travel through the gubernacular canals which is widened by the _______ activity

Answer 21

osteoclast

Question 22

gubernacular cords connect the ________ of the succedaneous tooth to the _______

Answer 22

dental follicle, oral mucosa

Question 23

teeth without roots can erupt so therefore root formation is _______ for tooth eruption

Answer 23

not required

Question 24

during root eruption the periodontal ligament forms _______ root formation starts, and is ________ as eruption occurs

Answer 24

after, remodeled

Question 25

_______ is an extremely rare inherited disorder whereby the bones harden and become dense due to low osteoclast activity

Answer 25

osteopetrosis

Question 26

in osteopetrosis the periodontal ligament development is normal but teeth do not erupt and in rootless teeth with little periodontal ligaments teeth DO erupt which means periodontal ligaments are _________ with tooth eruption

Answer 26

not associated

Question 27

experimental removal of _______ prevents eruption although the tooth forms

Answer 27

dental follicle cells

Question 28

the dental follicle modulates bone remodeling which therefore suggests that the follicle is ________ for tooth eruption

Answer 28

required

Question 29

in osteopetrosis there is a reduced amount of osteoclast activity, causing reduced bone resorption and therefore the teeth _________

Answer 29

do not erupt

Question 30

colony-stimulating factor 1 (CSF-1) is a growth factor that activates _______ activity

Answer 30

osteoclastic

Question 31

reactivation of osteoclasts in osteopetroic conditions leads to restored ________

Answer 31

tooth eruption

Question 32

osteoclasts around the developing teeth are differentiated from extravasated ________

Answer 32

monocytes

Question 33

vascularization of the tooth surrounding area starts at the late ________ stage of development

Answer 33

apposition

Question 34

vascularization starts to become prominent with the formation of the ________ layer overlaying the developing crown

Answer 34

papillary

Question 35

vascularization becomes prominent as the ________ and ________ develop

Answer 35

roots, periodontal ligaments

Question 36

vascularization allows for the extravasation of ________ in the neighborhood of the developing tooth

Answer 36

monocytes

Question 37

monocyte movement into the dental follicle is promoted by the ______ that is secreted by the follicle cells

Answer 37

monocyte chemotropic protein 1

Question 38

follicular cells also express ______ that promotes differentiation of _______ into _______

Answer 38

CSF-1, monocytes, osteoclasts

Question 39

________ is the natural process of losing deciduous teeth

Answer 39

exfoliation

Question 40

during canine and incisor exfoliation the permanent teeth develop on the _______ side and there is little loss of pulp, bone and root of the ______ tooth

Answer 40

lingual, deciduous

Question 41

during the exfoliation of the incisors and canines the ________ is lost rapidly due to cells undergoing ________

Answer 41

periodontal ligament, apoptosis

Question 42

during exfoliation of deciduous molars the periodontal ligament is lost as the _______

Answer 42

roots are reabsorbed

Question 43

during the post-eruptive stage the periodontal ligaments attain mature patterns of ________ and they become more defined

Answer 43

fiber groups

Question 44

in the post eruptive stage the _______ groups develop and the final growth pattern of vascularization and innervation of the periodontal ligaments

Answer 44

gingival-fiber

Question 45

mesial drift is the anterior or mesial readjustment of teeth with the jaw as a whole due to _________

Answer 45

alveolar bone remodeling

Question 46

bone resorption occurs _________ in each socket and addition ________

Answer 46

anteriorly, posteriorly

Question 47

bone remodeling is due to _______ and _______ of jaws relative to each other as teeth contact each other

Answer 47

mastication, angle

Question 48

mesial drift from the loss of a molar can alter the ________ which alters how the mandible and maxilla interact during mastication and will end up remodeling the structure of the _________

Answer 48

bite plane, tempormandibular joint