lecture 10 - mixed dentition

Question 1

birth to 6-8 months

Answer 1

no teeth erupted “edentulous”

Question 2

6 months - 2 years

Answer 2

primary teeth erupt

Question 3

2-6 years

Answer 3

all 20 primary teeth present

Question 4

6-12 years

Answer 4

mixed dentition

Question 5

12 years

Answer 5

only adult teeth

Question 6

late teens/early 20s

Answer 6

last permanent teeth erupt (3rd molars)

Question 7

mixed dentition

Answer 7

dentition period between 6 and 12 years of age and has both primary and permanent teeth

Question 8

the process of “shedding” is called

Answer 8

exfoliation

Question 9

root resorption

Answer 9

the gradual dissolving away of the root due to underlying eruption of the succedaneous teeth

Question 10

eruption cysts

Answer 10

eruption hematoma
bluish, fluid filled swelling over an erupting tooth
common in children
usually resolves itself

Question 11

how to identify which teeth are primary and permanent

Answer 11

identify child’s age
identify the permanent 6 year and/or 12 year molars
count from the midline
compare sizes of the teeth
look across the arch
xrays if taken