exam 2 anterior teeth part 2 Flashcards
which tooth, out of the mandibular teeth, has the longest root
canines
for the mandibular canines, there is ____ pulp horn; and can sometimes have an ______ canal
one; accessory
the mandibular canines have how many pulp canals and how many pulp chambers
one; one (large)
usually, for mandibular canines, more of the crown is (mesial or distal) to the root axis line
distal
on the labial view which cusp slope is noticeably shorter for mandibular canines
mesial slope
mesial contact area for mandibular canines
in the incisal third just below the mesioincisal angle
distal contact area for the mandibular canines
junction of the middle and incisal thirds, more cervically located than the mesial contact area
for the mandibular canines, the root apical end is more often what?
straight than curving toward mesial or distal sides
DO NOT USE ROOT CURVATURE IN JUDGING LEFT AND RIGHTS
true or false: canines have two lingual fossa (DL and ML) and a lingual ridge, mesial marginal ridge, and distal marginal ridge
true
the cingulum on the mandibular canines lies____ to the root axis line
just distal to root axis line
on the lingual view of the mandibular canines, can you see the longitudinal depressions on the mesial and distal surfaces of root?
yes
the crest of curvature on the labial surface for the mandibular canines is closer to the ____ line than on maxillary canines
cervical
for the mandibular canine, is the cusp tip positioned more labially or lingually to the root axis line?
lingually
the CEJ on the mandibular canine greater curve on which side
mesial
on the mandibular canines, the longitudinal depression is deeper on which side
distal
which tooth may be bifurcated into a facial and lingual terminal root(rare)- distal view
mandibular canine
oblong ______ outline is characteristic of mandibular canines (incisal view)
faciolingual
in the incisal view of the mandibular canines, the distoincisal angle is in a position ______ to the cusp tip(to match closely the curvature of the dental arch)
lingual
from the incisal view of the mandibular canines, which marginal ridge is longer?
mesial marginal ridge
for the mandibular canines, which crown outline (mesial or distal) doesn’t bulge beyond root outline?
mesial crown outline
for the mandibular canines, which cusp ridge is shorter?
mesial(also more horizontal than distal)
to tell left from right in mandibular canines, the cingulum is ___ to the center
distal
the incisal ridge on the mandibular canines is more ______ (lingual or labial) on the distal half
lingual
which half of the crown may appear “pinched” faciolingually on the mandibular canines(looking at incisal view)
distal half
for canines, which M-D contact areas were more cervical (maxillary or mandibular canines?)
maxillary canines
which has a blunter root tip, the maxillary or mandibular canines?
mandibular
no longitudinal depressions on max central incisor roots- true or false
true
max laterals incisors, root depression on mesial, not on distal**
true
mand cen and lat- depressions on mesial and distal, distal side is deeper*****
true
which teeth, out of the canines, that the mesial outline of crown bulges beyond root outline?
maxillary canines
max canine cingulum:
mand canine cingulum:
- centered
- displaced to D(sometimes centered)
which teeth, out of canines, does the labial height of contour on the proximal view is closer to the cervical line?
mandibular canines
for the maxillary canines, is the incisal wear more on the lingual or labial?
lingual
maxillary canine facets on which surface?
facets on lingual-incisal or lingual surface
mandibular canine facets on which surface
labial-incisal of cusp ridge
which are the smallest teeth in the mouth?
mandibular incisors
maxillary central incisors are wider which way?
mesiodistally
when do mandibular incisors erupt?
between 6 and 8 years of age
mandibular incisors are wider which way
F-L than M-D
where do the contact areas usually reside mostly for mandibular incisors?
incisal ridge
for mandibular incisors, where is attrition usually found?
incisal edges, none on lingual surface
true or false: mandibular incisors have roots that are shorter in proportion to the crowns
false
are the mandibular central incisors bilaterally symmetrical?
yes!
contact areas for both mesial and distal for mandibular centrals
M- incisal 1/3 almost level with incisal edge; distal about level
the cingulum of the mandibular central incisors is
small and centered on lingual surface
from the lingual view of mandibular incisors, the root is slightly more narrower; is there longitudinal depressions on both sides of the root?
yes
maxillary laterals root depression
depression on the mesial, not distal
(mesial view)crest of curvature for mandibular centrals labial outline
just incisal to the CEJ
mandibular central incisor, which side has a deeper CEJ curvature?
mesial
for mandibular centrals, where is the longitudinal depression on mesial view
middle 1/3 of M root surface
for mandibular centrals, which side is the longitudinal depression more pronounced?
distal
which tooth shows normal development with very few malformations or abnormalities
mandibular lateral incisor
when do mandibular laterals erupt?
7-8 years of age
for the mandibular laterals, the incisal edge curves toward
distal
what kind of twist does mandibular lateral incisor have?
distolingual twist
contact areas for mesial mandibular lateral incisors
in the incisal 1/3
contact area for distal mandibular lateral incisor
incisal 1/3 but cervical to the level of the M contact
which marginal ridge is longer for mandibular lateral incisor
Mesial
on the mesial view of mandibular lateral incisor, incisal edge slopes which way
labially
on the distal view of mandibular lateral incisor, incisal edge slopes which way
lingually
CEJ curvature on the mandibular lateral incisor
much greater on mesial than distal
for mand lateral incisor, longitudinal depression deeper on the
distal
the incisal edge of the lateral incisor curves toward the what side?
distal, following the contour of mandibular arch
for mandibular lateral incisor, the cingulum is slightly offset to the what?
distal
