Quiz 2 Review Flashcards
What is the difference in size and crown dimension between primary and permanent teeth?
Primary teeth are smaller in size and crown dimension
Do primary or permanent teeth have more prominent cervical ridges?
Primary
T/F Primary teeth are lighter in color and are narrower at their necks than permanent teeth
True
What is the difference between primary and permanent molar roots?
Primary molar roots are more widely flared
How do the roots of primary anterior teeth compare to their respective crowns?
narrower and longer
A narrow root an wide crown causes what anatomical structure to differ?
Cervical area at the CEJ
Is the mesiodistal measurement lesser/greater than the faciolingual measurement on a primary maxillary central incisor?
Mesiodistal is greater than faciolingual
Where is the incisal ridge centered over on the primary maxillary central incisor?
the main bulk of the crown
Where is there a curvature on the primary maxillary central incisor’s incisal ridge?
lingual on the distal portion
Which surface is wider and smoother on the primary maxillary central incisor: facial or lingual?
facial
Where does the lingual surface on a primary maxillary central incisor taper towards?
cingulum
What surfaces are wide on a a primary maxillary central incisor to aid in contract with adjoining teeth?
mesial and distal
What is the crown shape of a primary maxillary canine?
diamon/arrow
The cusp portion on a primary maxillary canine is slightly _______ of the center of the tooth
distal
Which cuspal ridge is longer on a primary maxillary canine: mesial or distal?
Mesial cuspal ridge is longer than distal cuspal ridge
T/F the proximal contact locations are at different levels on a primary maxillary canine
False - they are at the same level
What side is the facial ridge located on a primary maxillary canine?
slightly on the distal half
The root length is ______ longer than the crown on a primary maxillary canine
2x
Where does the root curve on a primary maxillary canine?
towards the distal
Where does the crown taper towards on a primary maxillary first molar?
occlusal
Which cusp is taller and more pointed on a primary maxillary first molar: mesiolingual or mesiofacial?
mesiolingual
T/F you can see a lingually positioned mesial marginal ridge groove on a primary maxillary first molar from a mesial view?
True
Is the facial cervical ridge on a primary maxillary first molar convex or concave?
convex
Where is the cervical line curvature on a primary maxillary first molar?
occlusal curvature on the facial half of the crown
Where is the proximal contact located on a primary maxillary first molar?
faciolingual center of the tooth
How many roots can be seen on mesial view of a primary maxillary first molar?
2; the mesiofacial root is super-imposed over the distofacial root
The ________ inclines out beyond the lingual confines of the crown and curves ________ in the ________ one-third on a primary maxillary first molar
The lingual root inclines out beyond the lingual confines of the crown and curves facially in the apical one third
Where is the bifurcation between the mesiofacial and lingual roots on a primary maxillary first molar?
at the cervical line
What are the 5 cusps on a primary second molar; arranged largest to smallest?
- mesiolingual
- mesiofcial
- distofaical
- distolingual
- 5th Cusp of Carabelli
From an occlusal view, what is the crown shape of a primary maxillary second molar?
somewhat rhomboidal - shows distal crown convergence
Which tooth has a larger oblique ridge: primary maxillary second molar or primary maxillary first molar?
primary maxillary second molar
On a primary maxillary second molar there is a distinct _________ ridge involving the _________ ridges of the _________ positioned cusps
There is a distinct transverse ridge involving the triangular ridges of the mesially positioned cusps
What are the major fossa of a primary maxillary second molar?
central and distal
What are the minor fossa of a primary maxillary second molar?
mesial triangular
distal triangular
On a primary maxillary second molar, what is the distal oblique groove called when graveling on the lingual surface?
lingual developmental groove
On a primary maxillary second molar the __________ groove of the __________ ridge cross the oblique ridge and connects the ________ pit with the _______ pit.
The transverse groove of the oblique ridge crosses the oblique ridge and connects the central pit with the distal pit
How many cusps are visible from a distal view of the primary mandibular first molar?
4
How many roots are visible from a distal view of the primary mandibular first molar?
2
Where does the distal root of a primary mandibular first molar converge towards?
apex
What surface has a developmental root depression on a primary mandibular first molar?
distal
Where to maxillary lateral inciors ectopically erupt towards?
lingual side
Where to maxillary canines ectopically erupt towards?
facial side
What teeth most commonly exhibit transposition?
maxillary canines
What is it called when a tooth is located in a different position from where it is supposed to be?
transposition
What is ectopic eruption?
when a tooth erupts or emerges in the wrong position within the arch
What is the most commonly rotated tooth?
maxillary second premolars (followed by maxillary incisors and maxillary first premolars)
What type of teeth exhibit dens-in-dente (dens invaginatus)?
permanent teeth
What occurs in dens-in-dente?
- outer enamel surface is folded inward
2. tissue is wrapped
What are the two types of dens invaginatus?
coronal and radicular
Dens invaginatus most likely occurs because of the what structure infolding during development?
dental papilla
What is the most common tooth to display dens-in-dente?
permanent maxillary lateral incisor
What is dentinogenesis imperfecta?
discoloring or translucent appearance of primary or permanent teeth
Radiographically, patients with dentinogenesis imperfecta lack what tooth structures?
pulp chambers and root canal
What is the shape of the crown outline on a permanent maxillary central incisor?
trapezoidal, shorter at cervix
On a permanent maxillary central incisor, is the crown widths at contact areas greater or less than at cervix
crown width at contact areas are greater than at cervix
What are the following measurements on a permanent maxillary central incisor?
- cervicoincisal length
- mesiodistal width
- faciolingual depth
- cervicoincisal length: 10.5 mm
- mesiodistal width: 8.5 mm
- faciolingual depth: 7.0 mm
What are the lingual fossa boundaries on a permanent maxillary central incisor?
linguo-incisal ridge
mesial and distal marginal ridges
cingulum
What is the shape of the lingual fossa on a permanent maxillary central incisor?
trapezoidal
On the lingual aspect of a permanent maxillary central incisor, how is the cervical outline positioned in comparison to the facial aspect?
apically positioned, away from the incisal
What is described as wide, shallow, and dish-shaped in depression on the incisal 1/2 of a permanent maxillary central incisor?
lingual fossa
Where is the cingulum located on a permanent maxillary central incisor?
cervical 1/2 of the crown
The cingulum of a permanent maxillary central incisor has 2 ridges that impinge where?
lingual fossa at the middle third
Where is the greatest curvature of the cingulum on a permanent maxillary central incisor?
distal to the mesiodistal long axis bisector of the crown
Describe the lingual fossa on a permanent maxillary lateral incisor
deep, triangular, cup-shaped
Where is the lingual fossa located on a permanent maxillary lateral incisor?
incisal 2/3 of the lingual surface of hte crown
What are the lingual fossa boundaries on a permanent maxillary lateral incisor?
linguo-incisal ridge
mesial and distal marginal ridges
cingulum
Where is the cingulum on a permanent maxillary lateral incisor limited to?
cervical 1/3 of the crown and the mesial and distal marginal ridges
Which is larger: permanent maxillary central or lateral incisor?
central incisor
Which is more angular: permanent maxillary central or lateral incisor?
central incisor
Which tooth as a curved root pointed towards the distal: permanent maxillary central or lateral incisor?
lateral incisor
Which tooth a convex incisal third of the facial surface: permanent maxillary central or lateral incisor?
lateral incisor
What is one of the most variable permanent teeth?
permanent maxillary lateral incisor
The crests of the cingulum on the permanent maxillary incisors is off-set towards what side?
distal
What are the shapes of the lingual fossa on a permanent maxillary central and lateral incisor?
central: trapezoidal
lateral: triangular
From an incisial view where are the contact areas on permanent maxillary central and lateral incisors?
faciolingually
From a proximal view, where is the incisial edge centered over on both permanent maxillary central and lateral incisors?
incisial edge is centered over the crest of curvature of te CEJ and the main body of their respective roots
From the lingual view, does a permanent maxillary central or lingual incisor have fissured lingual pit?
lateral incisor
What is the crown shape of a permanent mandibular canine?
diamond
Which is longer on a permanent mandibular canine: faciolingual or mesiodistal dimension?
faciolingual measurement
Which side of the crown on a permanent mandibular canine is bulkier: facial or lingual?
facial is bulkier than lingual (tapers towards the lingual)
Which side of the crown on a permanent mandibular canine is bulkier: mesial or distal?
mesial is larger than distal
