ch.18 primary dentition

what are the first set of teeth called

primary dentition

how many teeth are in primary dentition

20

how many teeth per arch

10

what is the numbering system

A-T

what type of teeth are in primary dentition

canine, molars, incisors

when does minerilization happen

13-16 weeks in utero

what neonatal tooth

when a baby is born with a tooth erupted

what year are all roots completed on primarys

3 years

what primary tooth is first to erupt

mandibular central incisor

when do the first teeth erupt

6-10 months

what is more important eruption dates or eruption sequence

the eruption sequence

T/F interproximal space is a good thing

true

T/F Primate spaces occur distal of the canines

true

T/F Molar roots flare more as they approach the apex

true

do primary teeth have a more yellow or white appearence

white

why are the primary teeth so important

esthetics, mastication, speech, and place holders for the succedaneous teeth

when should a child have their first dental exam

before or by 12 months

how many incisors are in each arch

4

each quadrant has a

central and lateral incisor

primary teeth are narrower_____ than perm teeth

MD

what letter are the max central incisors

E and F

when do the centrals erupt

8-12 months

T/F From the facial aspect, the crown appears wider MD than IC, the opposite of the permanent central

true

do the primary max centrals have mamelons

no

T/F Cingulum and marginal ridges are more prominent than on the permanent centrals

true

are the roots long on the max centrals

Roots are about twice the length of the crown

what letter are max laterals

D and G

when do max laterals erupt

9-13 months

T/F max laterals longer IC than MD

true

what letter are the man laterals

N and Q

when do the man lateral erupt

10-16 months

T/F the man lateral root may have a distal

curvature in its apical

third

true

how many canines are in primary dentition

4

what letters are the max canines

C and H

when do the max canines erupt

16-22 months

the root of the max canine is inclined

distally

what letters are the man canines

M and R

primary teeth are erupted by what age

33 months

how many molars are in the primary dentiton

8 (1st and 2nd)

primary molars are replaced by the perm

premolars

T/F none of the primary first molars resemble any

other tooth in either dentition

true

T/F The crown of each primary second molar in both arches resembles the first molars of the

permanent dentition

true

why do the roots of molars have big space between them

for the developing permanent premolar crowns

what are the letters of the max 1st molar

B and I

when do the max 1 molars erupt

13-19 months

how many cusps on max 1st molar

3-4 cusps

what cusp may be absent on max 1 molars

DL

what is the occlusal pattern of the max 1 molar

H

T/F lingual root is the longest and most divergent on max 1 molar

true

what are the letters of the max 2nd molars

A and J

when do max 2 molars erupt

about 2 years of age

is 2nd max molar larger than 1st molar

yes

how many cusps does max 2 molar have

5, possible cusp of carabelli

what letters are man 1st molars

L and S

when do man 1 molars erupt

14-18 months

what is a distinctive characteristic the man 1s molar has

prominent buccal cervical ridge, which is alsovon the mesial half of the buccal surface

how many cusps does man 1st molar have

4 cusps

what cusp on the man 1st molars is larger

mesial

what premolar is developing under right side man 1 molar

#28

what letters are the man 2nd molars

K and T

when do the man 2 molars erupt

23-31 months

T/F the primary man 2nd molar closely resembles the form of the permanent mandibular first molar

true

how many buccal cusps does the man 2nd molar have

3

what perm tooth may not be noticed by an adult when primary teeth are still in mouth

first molar, closely resembles primary 2nd molar

what age is this pt

roughly 9

what age is this pt

roughly 10

what age is this pt

roughly 8

The actual dates of eruption are not as important as the

eruption sequence. A radiograph should be taken if teeth erupt asymmetrically

both statements are true

Which primary tooth has a crown that does not resemble any other tooth of either dentitions

mandibular 1st molar

Which one tooth is adjacent and distal to the

primary maxillary second molar in a 7-year-old child

perm max 1st molar

What would you estimate to be the dental age of a

child with the following teeth: all primary maxillary

incisors, canines, and molars; permanent mandibular incisors and permanent first molars

roughly 5-7