1 Flashcards
All primary teeth begin calcification process
4-5 months in utero
All primary teeth emerge (erupt) by
age 2-3 years (2.5 years average)
Roots of primary teeth complete formation approximately
1-2 years after eruption
roots are about —- formed at eruption
half
Roots begin to resorb approximately—- years before —-
Roots begin to resorb approximately 2-3 years before exfoliation
Primary dentition exists until beginning of —– dentition with the emergence (eruption) of the permanent first molars at age —–
Primary dentition exists until beginning of mixed dentition with the emergence (eruption) of the permanent first molars at age six
permanent 1st molars
erupt distal to the primary second 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
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
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