Primary Dentition Flashcards
The facial profile of the crown on a primary maxillary lateral incisor is described as?
A continuous curvature
The cervical ridges of primary anterior teeth are more prominent than those of the permanent anterior teeth. The cervical areas of primary molars are significantly more constricted than those of permanent molars.
A. The first statement is false; the second statement is true
B. The first statement is true; the second statement is false
C. Both statements are true
D. Both statements are false
C. Both statements are true
The incisal edge of the primary maxillary lateral incisor is located?
Facial to the long axis bisector
The incisal edge of the primary maxillary central incisor is located?
Centered over the crown
The incisal edge on a primary mandibular incisor, is located?
Centered over the root
What teeth are not present in primary arches?
pre-molars
How do primary and permanent molar roots compare?
Permanent molar roots are wider & closer
Primary molar roots are slender, long, flared
Are primary molars larger or smaller than their replacement?
larger
What teeth replace primary molars?
Premolars
Which is larger: primary or permanent molar crown?
permanent
Which enamel is thicker: primary or permanent molar crown?
permanent
Do permanent or primary molars have a more prominent cervical ridge (contour in cervical third)?
primary molar
Do permanent or primary molars have thicker dentition?
permanent
Do permanent or primary molars have thicker pulp chambers?
primary
Do primary or permanent molars have more compression at the neck of the tooth?
primary
What is the type of root system in a molar?
bifurcation (2 root system)
Do primary or permanent molars have a whiter crown color?
primary
Do primary or permanent molars have shorter pulp horns?
permanent
T/F primary teeth have longer root lengths relative to crown heights compared to permanent teeth
True
Where is minimal root angulation in primary teeth seen?
primary anterior teeth
In primary molar teeth which roots are more curved: mesial or distal?
mesial roots are more curved that distal roots
T/F apices on primary teeth are less pointed
False - apices are more pointed
The cervical ridges of primary anterior teeth are more/less prominent than those of permanent teeth
more prominent
For the primary maxillary central incisor (facial view) is the mesiodistal measurement smaller/larger than the cervicoincisal height of the crown?
larger
What is the cervicoincisal height?
length from cervical line to incisal edge (height of the crown)
Which incisal edge (mesial/distal) is curved on the primary maxiallary central incisor (facial view)?
distal edge: curved
mesial edge: straight
What is the mesioincisal angle of the primary maxillary central incisor?
90 degrees
What is the shape of the distoincisal angle of the primary maxillary central incisor?
rounded
Where does the cervical line bend towards?
towards the apex/root
Is the cervical line more curved on a primary or permanent maxillary central incisor?
permanent is more curved
Which outline is more convex: mesial or distal?
mesial outlines are less convex than distal crown outlines
Is the mesial contact point more/less incisal than the distal contact point?
more
Is the root more/less blunt in primary or permanent maxillary central incisors?
primary is less blunt than permanent
How does the primary lateral incisor differ from the primary central incisor?
There is more curvature in the lateral incisor
On a primary maxillary lateral incisor, where does the crown taper towards?
lingual surface (facial to lingual)
What surface does the incisal ridge of a primary maxillary lateral incisor curve towards?
curve towards the facial surface
The ___________ profile is slightly concave in the primary maxillary lateral incisor
distolingual
Is the lingual fossa deep/shallow in a primary maxillary lateral incisor?
deep
What is the difference in primary mandibular and maxillary canines?
the mandibular canine is less developed than the maxillary canine
- crown is 0.5 mm shorter
- root is 2.0 mm shorter
- root tip has no curvature
- cusp tip is on mesial side
- longer distal cuspal ridge than mesial
- straight mesial outline
- convex distal outline
In primary maxillary canines what is unique about the cuspal ridges?
the mesial cuspal ridge is longer than the distal cuspal ridge
What does a minimal facial development groove separate in a primary maxillary first molar?
mesiofacial and distofacial cusp
Do 1st or 2nd molars have more consistent anatomy?
2nd molars
Where is the widest measurement on the crown of a primary maxillary first molar?
at the contact areas
In a primary maxillary first molar, is the mesiofacial cusp smaller/taller and narrower/wider than the distofacial cusp
mesiofacial cusp is taller and wider
What view can all 3 roots be seen for a primary maxillary first molar?
facial view
Which roots are the longest/shortest in the primary maxillary first molar?
Longest: mesiofacial, lingual
Shortest: distofacial
Where do the roots bi/trifurcate in the primary maxillary first molar?
at the cervical line - CEJ
Do primary molars have root trunks?
no
At what part of the crown is the cervical ridge convex in a primary maxillary first molar?
mesial half
T/F The cervical line drops down apically onto the root surface on the distal half of the crown
False- The cervical line drops down apically onto the root surface on the mesial half of the crown
What is the cusp design on the occlusal surface of a primary maxillary first molar?
scalloped (infinte)
On the primary maxillary second molar where is there less tooth structure (occlusal view)?
distal side
What are the 5 cusps on the primary maxillary second molar ordered from largest to smallest?
- mesiolingual
- mesiofacial
- distofacial
- distolingual
- 5th cusp of carabellie
What is the crown shape of the primary maxillary second molar?
rhomboidal w/ distal crown convergence
What are the major fossa on the primary maxillary second molar?
central and distal
What are the minor fossa on the primary maxillary second molar?
mesial triangular and distal triangular
What is the distal oblique groove wen traveling onto the lingual surface of the primary maxillary second molar called?
lingual developmental groove
Which root is longer on the primary mandibular 1st molar?
mesial
When viewing the facial surface of a primary maxillary second molar, which lingual cusp is visible?
mesiolingual
When viewing the mesial surface of a primary mandibular first molar, which cusp tip cannot be observed?
distofacial
When viewing the mesial surface of a primary mandibular second molar, how many cusps are visible?
2
When viewing the primary maxillary second molar from the distal aspect, which of the major cusp tips is the shortest?
Distolingual
When viewing the primary maxillary second molar from a mesial view, there are ___ roots visible, with the __ displaying the widest faciolingual measurement
2 roots
mesiofacial
