Exam 2 Flashcards
Loss of primary teeth often thought of as
annoyance
Primary teeth are important in mastication and maintaining space for
permanent teeth
What are primary teeth often called?
Often called temporary, milk, or baby teeth
How many primary teeth?
20 total; 10 each jaw; 5 per quadrant
How many incisors, canines, and molars one arch
4, 2, 4
Primary Central incisor, lateral incisor, and canines are
succeeded
First and second primary molars are replaced by
first and second permanent premolars
What tooth does the first permanent first molar replace?
None
Primary teeth are generally _________ than perm. counterparts
smaller
Primary teeth have _______ crowns relative to total crown-root length
short
Primary teeth are______ mesial to distal relative to occlusal to gingival height
Wider
Primary teeth have a more prominent
cervical ridge, on labial and lingual of anteriors and buccal of molars
Primary Roots are relatively _______ and _______
longer and thinner
There is much more ______ to the roots of the primary teeth
flare
Primary teeth having flare and thinness can result in easy
fracture
There is No identifiable ______ on primary teeth
root trunk
Primary crowns are lighter in ______
color, opaque, whitish to bluish
On primary teeth Enamel is relatively
thinner
On primary teeth Dentin is relatively
thinner
Pulp cavity is relatively
larger
Mesial pulp horns are especially
larger
Endodontia
root canal treatment
What is rarely attempted for primary teeth?
endodontia
Pulpotomies is
primary root canal
How do they do a pulpotomie?
remove crown, put medicine on it, then put a crown over it (silver cap)
Due to the larger pulp cavity, what happens?
the tooth is more perceptive to heat
Example of primary tooth getting hot during treatment
rubbercup polishing. The spinning can get really hot if held on tooth too long or there is too much pressure.
Do mamelons occur on primary teeth?
no
On Primary teeth, Mesial to distal width is greater than
incisal to cervical line
Typically there are no _______ ________ in primary teeth
developmental depressions
Maxillary central distal incisal is rounder than
mesial to incisal
Maxillary central lingual
cingulum, marginal ridges prominent, and fossa is deeper
Maxillary central Mesial and Distal
Relatively wider Labial-Lingual than permanent tooth
Maxillary central Incisal
Equal halves (L and L), straight, wide mesial to distal
Maxillary central Root
longer relative to crown length than permanent central
Primary Maxillary Lateral differences
Smaller in all dimensions, More rounded at incisal
Primary maxillary laterals have more prominent ______ and _______ like the permanent
marginal ridges and fossa
Primary maxillary laterals have longer_______ than primary maxillary centrals
roots
Primary maxillary Lateral is wider _______ to _______ and ______ to ________
Incisal to cervical and mesial to distal
Primary Maxillary Canine incisal to cervical is slightly more than
mesial to distal dimension
Primary maxillary Canine ______ is relatively more ________ than permanent
cusp; prominent
Primary maxillary canine is mesial-incisal slope longer than
distal
In the maxillary canine, sometimes a ______ from _____ which is rare in permanent
tubercle; cingulum
Primary Maxillary 1st Molar crown resembles
maxillary premanent premolars
Primary Maxillary 1st Molar has prominent ______ _____ and ______ ______ cusp
mesial buccal and mesial lingual
Primary Maxillary 1st molar also has the two
distal cusp which are very small
Primary Maxillary 1st molar Cervical line curvature is greater in
mesial half
Primary Maxillary 1st molar Lingual height of contour at junction of middle and cervical thirds is
more cervical (closer to CEJ) than permanent posterior teeth
Maxillary 1stMolar Occlusal- how many sides
5
Maxillary 1stMolar Occlusal- most prominent elevaltion
Lingual cusp ridge of MB cusp
Maxillary 1stMolar Occlusal- dominant ridge
Transverse ridge dominates occlusal table MB and ML triangular ridges
Maxillary 1stMolar Occlusal- what ridge is there, but not as prominent
Oblique ridge is present –ML to DB
Maxillary 1stMolar Occlusal- What rarely crosses onto lingual
Disto-occlusal groove
Maxillary 1stMolar- longest/largest root
Lingual root largest and longest
Maxillary 1stMolar has no
root trunk
Maxillary 1stMolar- 3 roots named as permanent molars are
trifurcation
Primary Maxillary 2ndMolar resembles
Permanent Maxillary 1stMolar!
Primary Maxillary 2ndMolar has at least a trace of the
Cusp of Carabelli
Primary Maxillary 2ndMolar has how many cusps?
4 major cusps
Primary Maxillary 2ndMolar Has what kind of groove
this tooth has a distolingual groove
Primary Mandibular Central looks more like the ________ ________ than its permanent counterpart
mandibular lateral
Primary Mandibular Central is relatively wider ______ __ _____ than permanant, but not wider than ______ __ _______ dimension as seen in primary maxillary central
mesial to distal; incisal to cervical
Primary Mandibular Central the Incisal is ______, no _____, and no ______
straight, mamelons, and depressions
Primary Mandibular Lateral is longer ______ and wider ______
incisal to cervical and mesial to distal
Primary Mandibular Lateral incisal slopes towards
distal
Primary Mandibular Centrals are
symmetrical
Primary Mandibular Laterals are not
symmetrical
Primary Mandibular Canine is what compared to the primary max canine
much narrower labiolingually and mesiodistally
Primary Mandibular Canine _______ height noticeably ______ than ______ width
Incisal to cervical; greater; mesial to distal
Primary Mandibular Canine ______ slope is longer than______
distoincisal; mesial
Primary Mandibular Canine have ______ and ______ ridges
cingulum and marginal ridges
Primary Mandibular Canine cervical ridges are _____ prominent than _______
less; maxillary
Primary Mandibular Canine root is
shorter
primary Mandibular 1stMolar is unique how?
It doesn’t resemble any other tooth
Primary Mandibular 1stMolar is wider mesial to distal than
than B-L
primary Mandibular 1stMolar has how many roots
2
primary Mandibular 1stMolar, which cusp are large
MesialBuccal cusp and MesialLingual cusp
primary Mandibular 1stMolar cervical line is
deeper in mesial than distal
primary Mandibular 1stMolar has a prominent
cervical ridge
primary Mandibular 1stMolar Cervical line is more cervical on _______ than _____ from mesial view (like permanent permnanent molars)
buccal than the lingual
primary Mandibular 1stMolar has how many cusp?
4 cusps with two mesial ones being the largest
primary Mandibular 1stMolar has a transverse ridge where
mesial buccal to mesial lingual
primary Mandibular 1stMolar has how many fossa?
3
primary Mandibular 1stMolar has how many pits? Where?
2- central pit and mesial pit
primary Mandibular 1stMolar has how many grooves?
3- B groove; L groove; C groove goes from M to C pit
primary Mandibular 1stMolar describe root on mesial
Mesial root longer and wider
Primary Mandibular 2ndMolar closely resembles
PERMANENT MANDIBULAR 1STMOLAR!
Primary Mandibular 2ndMolar, does it have a transverse ridge?
No transverse ridge
Primary Mandibular 2ndMolar what cusps are nearly equal?
MB, DB and D cusps nearly equal
Primary Mandibular 2ndMolar, how many pits?
3
Primary Mandibular 2ndMolar describe root
Mesial root longer and wider than distal. Permanent 1stmolar roots about the same length.
