Primary Dentition II (Ye's Version) Flashcards
Primary: maxillary 1st molar resembles a?
Permanent PREMOLAR
Primary: maxillary 2nd molar resembles a?
Permanent Maxillary 1st molar
Primary Mandibular 1st molar resembles a?
DOES NOT resemble any other tooth?
Primary mandibular 2nd molar resembles a?
Permanent mandibular 1st molar
Primary Maxillary 1st Molar: resembles
Tooth crown resembles a _______
Premolar
Primary Maxillary 1st Molar: resembles
______ roots: 2 buccal, 1 lingual
3
Primary Maxillary 1st Molar: resembles
_______ shaped occlusal surface
Triangular
Primary Maxillary 1st Molar: resembles
How many cusps?
3 or 4
Primary Maxillary 1st Molar: resembles
if it has 3 cusps? 2 facial and 1 lingual
if it has 4 cusps? 2 facial and 2 lingual
In Q
Primary Maxillary 1st Molar: Buccal view
_______ cervix relative to width of crown
NARROW
Primary Maxillary 1st Molar: Buccal view
Cusps ______ -defined
Poorly
Primary Maxillary 1st Molar: Buccal view
Much _______ tooth than primary maxillary 2nd molar - almost premolar like
Smaller
Primary Maxillary 1st Molar: Buccal view
MB cusp is _______ than DB cusp
Larger
Primary Maxillary 1st Molar: Buccal view
Roots are ______, ______, and ______ spread
Long, slender, WIDE
Primary Maxillary 1st Molar: Buccal view
How many roots are VISIBLE?
All 3
Primary Maxillary 1st Molar: Buccal view
Root trunk is _______
Short (CEJ to FURCATION)
Primary Maxillary 1st Molar: Buccal view
How many buccal roots?
2 buccal roots
Primary Maxillary 1st Molar: Lingual view
Crown converges toward the ________
Lingual
Primary Maxillary 1st Molar: Lingual view
How many cusps? if it has multiple how which one is larger?
1 or 2
ML > DL
Primary Maxillary 1st Molar: Lingual view
_____ cusp is the largest and longest cusp on this tooth
ML
Primary Maxillary 1st Molar: Lingual view
_____ cusp small or absent. One lingual root - largest root.
DL
Primary Maxillary 1st Molar: Lingual view
How many lingual roots?
One. It’s the LARGEST too
Primary Maxillary 1st Molar: MESIAL AND DISTAL views
Crown is _______ in the cervical 1/3
Widest
Primary Maxillary 1st Molar: MESIAL AND DISTAL views
Crown is narrower on the _______ (buccolingually) than on the _______
Distal than mesial
Primary Maxillary 1st Molar: MESIAL AND DISTAL views
Very prominent _________ on the MB aspect of the tooth. OUTSTANDING CHARACTERISTIC
CONVEXity
Primary Maxillary 1st Molar: Occlusal view
Roughly _______ in outline, with the broad base buccally.
Triangular
Primary Maxillary 1st Molar: Occlusal view
____ cusp is the largest, longest, and sharpest
ML
Primary Maxillary 1st Molar: Occlusal view
____ cusp is smallest and may be absent
DL
Primary Maxillary 1st Molar: Occlusal view
Occlusal surface has:
- cantral fossa
-mesial triangular fossa, distal triangular fossa
-central, buccal, and distal developmental grooves - mesial pit and central pit
-oblique ridge connecting ML to DB cusps
in Q
Primary Maxillary 2nd Molar:
Resembles permanent ___________
Maxillary 1st molar
Primary Maxillary 2nd Molar:
_______ in outline
Rhomboidal
Primary Maxillary 2nd Molar:
What 4 cusps?
ML, MB, DB, DL cusps
Primary Maxillary 2nd Molar:
Has accessory cusp - ___________
Tubercle/cusp of carabelli
Primary Maxillary 2nd Molar:
Contains an _______ ridge
Oblique
Primary Maxillary 2nd Molar:
Same fossae and grooves as permanent 1st molar
In Q
Primary Maxillary 2nd Molar:
How many roots? What are they?
3 roots: MB, DB, and L
Primary Maxillary 2nd Molar: Comparison with permament
Primary trifurcation is _______ to CEJ. meaning a ______ root trunk
CLOSE; Short
Primary Maxillary 2nd Molar: Comparison with permament
Primary cervix is _________ MD compared to the MD diameter at the contact points.
NARROWER
Primary Maxillary 2nd Molar: Comparison with permament
These teeth may be confused clincically. The deciduous maxillary 2nd molar is ______
Smaller
Primary Mandibular 1st molar:
Does it resemble any other tooth?
NO
Primary Mandibular 1st molar:
How many cusps? What are they?
4: MB, ML, DB, DL
Primary Mandibular 1st molar:
How many roots?
2 roots (MESIAL AND DISTAL) just like permanent mandibular molars
Primary Mandibular 1st molar: Buccal view
Crown height on mesial is ______ that of distal
Twice
Primary Mandibular 1st molar: Buccal view
CEJ tips ______ on ______
apically on the mesial
Primary Mandibular 1st molar: Buccal view
Mesial contour is ________
Straight/flat
Primary Mandibular 1st molar: Buccal view
Distal is markedly ________
Convex
Primary Mandibular 1st molar: Buccal view
How many buccal cusps?
2
Primary Mandibular 1st molar:
Roots are _________ and _______ splayed
Slender; Widely
Primary Mandibular 1st molar: Buccal view
Extremely prominent MB _________
Convexity
Primary Mandibular 1st molar: Buccal view
Prominent _______ line angle
MB
Primary Mandibular 1st molar: Buccal view
Prominent ______ cervical ridge
MB
Primary Mandibular 1st molar: Lingual view
_____ and ____ cusps
ML and DL cusps
Primary Mandibular 1st molar: Lingual view
______ cusp is centered in the tooth (very important)
ML cusp
Primary Mandibular 1st molar: Lingual view
ML cusp is in line with the ______ root
Mesial
Primary Mandibular 1st molar: Lingual view
____________ is very well-developed and looks almost like another cusp.
Mesial marginal ridge
Primary Mandibular 1st molar: Mesial and Distal views
Extreme ________ buccally on the MB cusp
Convexity
Primary Mandibular 1st molar: Mesial and Distal views
__________ buccal surface especially when viewed from the mesial.
Flattened
Primary Mandibular 1st molar: Mesial and Distal views
_________ appearance of the mesial root
Rectangular
Primary Mandibular 1st molar: Mesial and Distal views
_______ root tapers at the apex
Distal
Primary Mandibular 1st molar: Occlusal view
_________ in outline
Rhomboidal
Primary Mandibular 1st molar: Occlusal view
How many cusps? what are they
4 cusps. ML, MB, DL, and DB
Primary Mandibular 1st molar: Occlusal view
cusp is the largest and centered in the lingual aspect.
ML
Primary Mandibular 1st molar: Occlusal view
Mesial and distal triangular fossae joined by the __________________-
Central developmental groove
Primary Mandibular 1st molar: Occlusal view
Mesial and central _____
Pit
Primary Mandibular 2nd molar:
Closely resembles the permanent ______________
Mandibular 1st molar
Primary Mandibular 2nd molar:
How many cusps? What are they?
5 cusps: 3 buccal/2 lingual
Primary Mandibular 2nd molar:
3 buccal cusps are _______ in size
equal
Primary Mandibular 2nd molar:
______ cusp is larger compared to the permanent mandibular 1st molar
Distal
Primary Mandibular 2nd molar:
2 lingual cusps _____ in size
Equal
Primary Mandibular 2nd molar: Comparison with permanent mandibular 1st molar
Bifurcation of root is ______ to CEJ
Close
Primary Mandibular 2nd molar: Comparison with permanent mandibular 1st molar
Roots are ______
Flared
Primary Mandibular 2nd molar: Comparison with permanent mandibular 1st molar
3 buccal cusps _______ in size
Equal
Primary Mandibular 2nd molar: Comparison with permanent mandibular 1st molar
Cervical ________
constriction
Other important facts:
What is primate space?
Space that exists mesial to the primary max canine and distal to the primary mandibular canine in some decidous dentitions. named after an equal space found in primate dentition
Other important facts:
What is the leeway space?
Combined MD widths of permanent premolars and permanent canine is less than the combined MD widths of the primary molars and primary canine.
