primary dentition Flashcards
order the eruption sequence of primary dentition
lateral incisors
central incisor
Second molars
canines
primary molars
Central incisors
Lateral incisors
First molars (“One year molars”)
Canines
Second molars (“Two year molars”)
very similar in form to permanent counterparts, but smaller and less pronounced morphologic features
incisor
tf incisors primary teeth have no mammelons
T
crown of incisors (primary)
appear squatted
tf primary incisors onlhave buccal cervical ridges
F
buccal and cervical ridges
incisor primary teeth
mesial CEJ more incisally positioned than distal
roots of incisor(primary teeth)
narrow and pointed
—- angle of lower lateral incisor (primary) quite rounded
DI angle of lower lateral incisor (primary) quite rounded
diamond shaped crown4
– maxillary canine primary teeth
diff between maxillary canine and permanent max canine
max canine
has longer mesial cusp ridge (slope) than distal slope
maxillary canine (primary) has marked —- and —- cervical bulges
maxillary canine has marked facial and lingual cervical bulges
arrow-shaped crown
primary mandibular canine
mandib canine(primary tooth)
mandibular canine has shorter mesial slope than distal slope
more slender with less prominent marginal ridges on lingual aspect
primary mandib canine
basically resembles maxillary premolar
max 1st molar
major cusps of max 1st molar
MB and Ml
DB and DL cusps
insig in size of max first molar
largest cusp of max 1st molar
MB
tf max 1st molar crown is more wide occlusocervically than mesiodistally
F
crown wider mesiodistally than occlusocervically
primary max 1st molar
prominent —– and —– cervical heights of contour (bulges)
prominent B & L cervical heights of contour (bulges)
slender and flared
roots of max 1st molar
how many roots are on primary 1st molar
3
tf primary 1st molar has a huge root trunk
F
small root trunk
morphologically identical to permanent maxillary 1st molar including cusp of Carabelli;
primary max 2nd molar
smaller and squatter than permanent maxillary 1st molar
primary maxillary 2nd molar
roots of primary max 2nd molar
more flared and slender
small rot trunk
prrimary max 2nd molar
primary max 2nd molar
greatest faciolingual diameter of all primary teeth
tf primary max 2nd molar is smaller than primary 1st molar
f
larger than primary 1st molar
primary mandib 2nd molar
identical to permanent mandibular 1st molar
primary mandib 2nd molar
smaller and squatter than permanent mandibular 1st molar
cervical bulges and constriction
primary mand 2nd molar
more flared and slender than permanent 1st molar
roots of primary mandib 2nd molar
how many roots for primary mandib 2nd molars
2
M and D
small root trunk
primary mandib 2nd molar
tf primary teeth are darker than perament teeth
F
lighter
have more pronounced cervical ridges (
primary teeth or permanent
primary teeth
more constricted at the cervix (neck)
primary or permanent
primary teeth
tf crown roots are long and narrow in relation to crown width and length
T
most unique primary tooth morphologically
primary mandibular first molar
Primary teeth are smaller in overall dimensions
to permanent teeth
large pulps with long pulp horns
primary teeth
more flared and slender roots which extend beyond the crown outlines, thus allowing space for the growth and development of the succeeding permanent teeth
primary molar
primary molars
short root trunks
and furcation areas approaching the CEJ
tf Primary pre-molars have buccal and lingual surfaces that are more convergent occlusally, result in narrow occlusal table
f
Primary molars have buccal and lingual surfaces that are more convergent occlusally
correct the statement
primary teeth; thin enamel with dispersed thickness
primary teeth; thin enamel with consistent thickness
difference between primary molar and permanent molars
enamel rods of primary molars at the CEJ point occlusally rather than gingivally as with permanent molars
tf
Primary teeth have lot of dentin between pulp and dentino-enamel junction (DEJ)
F
Primary teeth have little dentin between pulp and dentino-enamel junction (DEJ)
comparatively longer and narrower roots with respect to their crowns
primary ant teeth
primary ant teeth vs permanent ant teeth
primary ant teeth
appear wider mesiodistally and shorter occlusocervically
lack mammelons on incisal ridge
primary ant teeth
tf The teeth of children and young people are more sensitive than the teeth of older people to thermal change and dental operative procedures
t
leeway space
Primary molars are wider mesiodistally than the premolars that replace them
leeway space
allows space for some mesial movement of the permanent first molars as the premolars erupt
As jaws grow, spacing between —- ——occurs thus providing room for the larger permanent successors to erupt
As jaws grow, spacing between primary anteriors occurs thus providing room for the larger permanent successors to erupt
erupt at age 7-8
lower lat inc
upper central inc
upper m1 and lower canine
erupt at age 9-10
erupt at age 6-7
lower m1 and Central incisor
erupt at age 10-12
lower p1
upper P2
erupt at 17-21
m3 up and down
erupt at age 11-12
upper canine
and lower P2
erupt at age 11-13
lower M2
erupt at age 12-13
upper M2
erupt at age 10-11
upper P1
lat inc of upp
erupt at 8-9
primary teeth
Guide the permanent teeth to erupt at the correct position in the dental arch since the permanent teeth grow under the primary teeth
The current U.S. population with access to fluoridated water is approximately — percent.
The current U.S. population with access to fluoridated water is approximately 74 percent.
—- of all dental fluorosis was the very mild to mild form of dental fluorosis
94%
1986
dental fluorosis was present in 22.3% of the children examined
tf primary molar have Thicker dentin in central fossa than
permanent molar
T
thinner enamel
primary or permanent molar
primary molar
Higher pulp horns and larger pulp chamber
primary or permanent molar
primary molar
tf permanent molar have
More pronounced cervical ridges than primary molar
F
primary>permanent
tf in prmary molar . Enamel rods near CEJ slope gingivally
F
. Enamel rods near CEJ slope occlusally
. More constricted cervix
primary molar or permanent molar
primary molar
slender and longer , flared root
primary molar
