Dental Anatomy Review Part 2 (individual teef) Flashcards
Primary molar roots are considered more _______ and flared when compared to permanent. Primary molar roots are also _____ and ______ when compared to crown width and length.
SLENDER….narrow and long
How many LOBES do primary anterior teeth form from?
1…so NO mamelons!
The primary maxillary central incisor root rarely has any ______ in its shape…it is also considered more _____ at the apex, whereas the primary maxillary lateral incisor root is more ______ at the apex.
curvature….blunt…pointed
What is the general age range for a mixed dentition? (when first permanent tooth comes in and last primary tooth exits?
about 7-12 years old….so 1st grade to 6th grade!
When does calcification of primary teeth begin? When is the last calcification?
14 weeks yo! 14 16 17 15 19, 14 16 17 15.5 18…19 weeks yo!
What is the last primary tooth to erupt? When?
Maxillary 2nd molar…29 months (10 11 19 16 27, 8 13 20 16 29)
When is root completion of the primary teeth?
3.25 years…(1.5 2 3.25 2.5 3, 1.5 1.5 3.25 2.25 3)
When is the first sign of primary occlusion?
3 years old
Where are the permanent anterior teeth developing during the primary dentition? What about the permanent posteriors?
LINGUAL to the primary roots!…posteriors-in the furcation of the primaries.
In the primary maxillary lateral incisor-incisal view, the incisal ridge is curved toward the _______ surface.
facial
In a facial view of the primary mandibular central incisor, what shape is the incisal ridge?
STRAIGHT
In a facial view of the primary mandibular central incisor, is this tooth considered symmetrical? Also what is the proportion of crown to root?
YES… root length is 2x the crown length
What is the MOST UNIQUE feature of a the primary maxillary canine from a facial view?? ALSO what is the overall crown outline?
The MESIAL ridge is LONGER than the distal ((usually the opposite))…outline is diamond or (arrow)
Distal view of the Primary Maxillary 1st molar-Which root is the shortest?
DF
Distal view of the Primary Maxillary 1st molar- Which cervical convexity is most evident?
MF
Distal view of the Primary Maxillary 1st molar- Which marginal ridge is shorter?
distal is shorter than mesial
Mesial View-Primary Max 2nd Molar- Which cusp is not visible?
DL
Mesial View-Primary Max 2nd Molar-Which root is so curved that it goes outside the confines of the crown?
Lingual Root
Mesial View-Primary Max 2nd Molar-Which root is the widest?
MF (2/3 the apical area)
Occlusal view-Primary Second Molar: How many cusps?
5! (yes there is a cusp of carabelli)
Occlusal view-Primary Second Molar: what shape is the outline?
somewhat RHOMBOIDAL
Which has the bigger oblique ridge? Primary max 1st or 2nd molar?
2nd molar!!
THE #1 Primary tooth and View!!!-Facial View of the primary mandibular 1st molar: the mesial surface contour is relatively _____
flat
THE #1 Primary tooth and View!!!-Facial View of the primary mandibular 1st molar: Where are the contacts?
(occlusial portion of) middle 1/3 (almost to the junction of the middle and occlusial thirds)
THE #1 Primary tooth and View!!!-Facial View of the primary mandibular 1st molar: The cervical line SIGNIFICANTLY points/ dips apically on the ______ root surface.
mesial
THE #1 Primary tooth and View!!!-Facial View of the primary mandibular 1st molar: Which cusp is larger and taller from this view?
MF is larger and taller than DF
THE #1 Primary tooth and View!!!-Facial View of the primary mandibular 1st molar: the cervical ridge is very _____ in the mesial half
CONVEX
THE #1 Primary tooth and View!!!-Facial View of the primary mandibular 1st molar: which root is longer and straighter?
the mesial root!
in a distal view of the primary mandibular first molar… how many roots can I see? How many cusps?
both roots are visible ( M and D)…all four cusps are visible!
in a distal view of the primary mandibular first molar…where is the developmental root surface depression?
on the distal root
Mesial view of the primary mandibular second molar- where is the lingual height of contour?
the middle 1/3
Mesial view of the primary mandibular second molar- can I see the occlusial surface?
NO, the mesial marginal ridge is freggin huge
Mesial view of the primary mandibular second molar- describe the curvature of the cervical line?
minimal
Mesial view of the primary mandibular second molar-how many roots can I see?
one-just the mesial
Mesial view of the primary mandibular second molar-where is the root surface depression the deepest?
in the apical 1/3
Mesial view of the primary mandibular second molar-what is unique about the root apex?
it might have a serration! (its also blunt)
occlusal view-primary mandibular 2nd molar- what is the overall outline shape?
“rectangular”
occlusal view-primary mandibular 2nd molar- which permanent tooth does this resemble? How many cusps?
permanent mandibular 1st molar…5 cusps (3f, 2L)
occlusal view-primary mandibular 2nd molar- instead of a distal marginal ridge groove, there is a “_____” where it splits into two.
“notch”
occlusal view-primary mandibular 2nd molar-what are the three major fossae?
mesial triangular fossa, distal triangular fossa, central fossa
occlusal view-primary mandibular 2nd molar- how many transverse ridges are present?
NONE
What is the condition normally found in the permanent maxillary lateral incisor that the outer enamel surface is folded inward? (also called invaginatus) What is it caused by?
dens-in-dente…caused by infolding of the dental papilla during development
What is the anomaly found in molar teeth where the root structure is completely fused all the way to the apex?
Pyramidalism
What is the anomaly found in molars where the body of the tooth and pulp chamber is enlarged vertically?
Taurodontism
What are the only teeth that Taurodontism happens to?
PERMANENT molars only!
What are the two layers to an enamel pearl?
enamel and dentin
Where are enamel pearls most found?-which teeth and which part of the tooth?
distal of 3rd molars and the FACIAL root furcation of other molars
________ are extensions of the crown onto the root surface between roots.
Enamel Projections
Perm Max Central Incisor, Lingual View- the lingual fossa is described as a wide, shallow “______” shaped depression. and the outline is what shape?
“dish” shaped….outline is trapezoidal
Perm Max Central Incisor, Lingual View- the cingulum has 2 ridge “_______” that impinge on the lingual fossa.
“projections”
Perm Max Central Incisor, Lingual View-The greatest curvature lingually of the cingulum and the crest of the cervical line gingival will be slightly ______ to the mesiodiastal long axis bisector of the crown.
distal
Facial Aspect of the Perm Max Lat Incisor- how much shorter is it than the central? How much narrower?
1.0 to 1.5 mm shorter…2.0 mm narrower
Facial Aspect of the Perm Max Lat Incisor- What is the shape of the crown outline?
trapezoidal
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals… Which tooth is more “angular”?
central
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…which one has a straighter root?
central
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…which has a convex cervical 1/3 on the facial?
lateral
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…the crests of both cingulums are off set to the _____.
distal
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…what are the shapes of their lingual fossae?
central- trapezoidal…lateral-triangular
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…both contact areas are ______ faciolingually.
centered
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…from a proximal view, both have and incisal edge that is over the CREST OF CURVATURE of the _____.
CEJ/cervical line
BOOM CLAP THE SOUND OF MY HEART- Compare/contrast permanent maxillary centrals and laterals…Which one tends to get a lingual pit lesion?
lateral
Permanent mandibular central incisor-mesial view: the anatomical crown is going to be 0.5mm greater on the facial than the lingual.
a
Permanent mandibular central incisor-mesial view:
a
Permanent mandibular central incisor-mesial view:
a