Eruption of teeth - Sorenson

Question 1

T/F Tooth eruption is influenced by the pituitary growth hormone, thyroid hormone, and parathyroid hormone

Answer 1

True

Question 2

When does a tooth start to move toward eruption/occlusion?

Answer 2

at the time of crown completion

Question 3

by the time of clinical emergence, about how much of the root formation has occurred?

T/F when the teeth reach occlusion, the root has completed development

Answer 3

3/4 of the root

False

Question 4

primary teeth start to calcify during what months in utero?

Answer 4

4-6 months

Question 5

permanent teeth start to calcify about what age? When does the last one finish?

Answer 5

at birth - first molars

3-4 months - incisors

8-10 years - 3rds

Question 6

according to Moyers (whoever that is) what is the most common sequence of eruption of permanent teeth in the mandible?

Answer 6

first molar
centrals
laterals
canines
first premolar
second premolar
and second molar

Question 7

according to Moyers (whoever that is) what is the most common sequence of eruption of permanent teeth in the maxilla?

Answer 7

first molar
central incisor
lateral incisor
first premolar
second premolar
canine
second molar

Question 8

is it more common for kids to have delayed tooth eruption or early tooth eruption?

Answer 8

delayed

Question 9

Typically the slower kids get primary teeth the later they get permanent teeth. T/F

Answer 9

True

Question 10

If extraction of the primary molars occurs after 5 years of age there is a decrease in the delay of premolar eruption. T/F

but if they are younger than 5 what typically happens?

Answer 10

True

if they are younger than 5 then they typically have delayed eruption and not early eruption

Question 11

T/F it is not common for mandibular permanent central incisors to erupt lingually to the primary mandibular central incisors

Answer 11

False - it is common and should be considered essentially normal

Question 12

in the event that permanent mandibular centrals erupt lingual to the primary teeth, they do not typically migrate lingually. T/F

Answer 12

False - they typically move into place by age 8

Question 13

in the event that permanent mandibular centrals erupt lingual to the primary teeth and the parents are concerned about it, you should not worry about the parents and leave the teeth in the mouth since they will likely erupt and move anterior on their own. T/F

Answer 13

false - if the parents really want them out, take them out.. There are not contraindications for early extraction

Question 14

T/F Teething increases the incidence of infection and causes a rise in temperature, erythrocyte sedimentation rate, and white blood cell count

Answer 14

False - none of those things

Question 15

T/F:

Teething causes daytime restlessness

teething causes increased finger sucking

teething causes rubbing of the gums

teething causes increase in drooling

teething causes decrease in appetite

Answer 15

True to all of those

Question 16

a bluish-purple, elevated are of tissue occasionally develops a few weeks before the eruption of a primary or permanent tooth. What is it called?

Where is it most frequently seen?

What is the treatment?

Answer 16

Eruption hematoma

most frequently seen in the primary second molar or the first permanent molar region

treatment is to do nothing but if you do something cut off the top of the hematoma giving enough of an opening for the tooth to erupt through.

Question 17

a tiny spicule of nonviable bone overlying the crown of an erupting permanent molar around the time of the cusps erupting is called what?

that tiny spicule usually has dentin and cementum in it. T/F

Answer 17

eruption sequestrum

True

Question 18

Teeth present at birth are called what?

Teeth that erupt in the first 30 days after birth are called what?

Answer 18

natal teeth

neonatal teeth

Question 19

natal teeth and neonatal teeth are typically which teeth?

they are generally not supernumerary T/F

Answer 19

mandibular primary incisors

true

Question 20

when do we extract natal and neonatal teeth?

We can only keep them if what?

Answer 20

when they are loose and thus there is a possibility of aspiration

we can only keep them if they do not cause Riga-Fede disease

Question 21

which teeth are the most often ankylosed

Answer 21

mandibular primary molars

Question 22

T/F We must always extract ankylosed primary teeth

Answer 22

False

Question 23

If a permanent tooth starts to ankylose to the bone during eruption, how do we treat it?

Answer 23

luxation of the bony ankylosis which is typically only on one side.

Question 24

What is a common congenital anomaly in which delayed eruption of teeth frequently occurs?

at what age do these patients typically get their first primary teeth?

Answer 24

Down syndrome

2 years

Question 25

T/F Down syndrome children tend to have lower decay rates

T/F Down syndrome children have significantly worse gingivitis

Answer 25

True

True