general info and functions about all the teeth Flashcards
used for cutting
incisors
incisors
flat with —— biting edge
incisors
flat with horizontal biting edge
tf incisors are single rooted
T
tf incisors are only teeth with mamelons
T
incisors
cut food and ant. guidance
help to support the lip and maintain an esthetic appearance
incisors
articulate speech
incisors
incisors
The roots frequently incline or curve —-
The roots frequently incline or curve distally
tf
The distal crown contours of incisor are usually more rounded than the mesial
T
tf
The mesial contact areas of incisors appear more gingivally positioned
F
The distal contact areas appear more gingivally positioned
used for piercing and tearing
canines
canine
longest teeth in mouth
eminent facially (esthetic support)
canines
cornestones of mouth
canine
tf canines have 2-3 roots
F single rooted
the only teeth to possess single conical cusp
canines
canine eminence
the positions and forms of canines and their anchorage in the bone, along with the bone ridge over the labial portions of the roots
canine eminence
significant estetic and cosmetic value
canine
help form a foundation that ensures normal facial expression at the “corners” of the mouth
The distal crown contours of canines
are usually more rounded than the mesial
The distal contact areas of canines
appear more gingivally positioned
the roots of canine
frequently incline or curve distally
All teeth have facial height of contour in
cervical third of crown
All upper posterior teeth have
lingual height of contour in middle 1/3 of crown
All lower posterior teeth have lingual height of contour
more occlusally positioned than upper (middle 1/3 or junction of middle and occlusal 1/3)
All upper posterior teeth have —- —– lingual surface and a relatively—— buccal surface
All upper posterior teeth have 2 planar lingual surface and a relatively straight buccal surface
All lower posterior teeth have —– —– buccal surface and a relatively —– lingual surface
All lower posterior teeth have 2 planar buccal surface and a relatively straight lingual surface
All proximal heights of contour —- with proximal contact areas
All proximal heights of contour coincide with proximal contact areas
Proximal contact areas of all ——- teeth generally are —— and —– to the midpoint of the crown
Proximal contact areas of all posterior teeth generally are buccal and occlusal to the midpoint of the crown
Premolars replace (succeed)
primary molars
Mandibular teeth erupt before
maxillary counterparts
All anterior teeth and premolars are formed by
4 developmental lobes, 3 facial and 1 lingual
Exception
Y-type mandibular 2nd premolar which has
5 lobes (3 facial and 2 lingual)
All maxillary premolars have two cusps
of approximately equal size.
tf
All mandibular premolars have two cusps of approximately equal size.
F
The mandibular premolars may have more than two cusps (i.e. Y-type P2) and the lingual cusps are less prominent.
mandibular premolars incline significantly towards the
lingual
Maxillary premolars are wider
buccolingually than mesiodistally
The mandibular premolars have approximately equal
buccolingual and mesiodistal dimensions
first premolar is usually larger than the second
max premolars
second premolar is usually larger than the first
mandibular premolar
maxillary first premolar is the only premolar that normally has —- root branches
maxillary first premolar is the only premolar that normally has two root branches
(All premolars “succeed” (erupt in the positions of) the
primary molars
hexagon shape
max P1
oval;diamond
maxP2;Mand P1
square
Mand P2
3 to 5 cusps
permanent molars
tf largest occlusal surfaces of any teeth is of pre molars
F
molars
2;3 roots
low molar; upper molars
1 lobe/ cusp
all molars
used for grinding
molars
pulp horn;lobe; cusp
1;1;1;
molars
all molars
one lobe per cusp
considered cornerstones to development of occlusion
all molars
Permanent molars erupt
distal to primary dentition
upper post teet; lower post teeth
2 planar lingual surface and a relatively straight buccal surface; 2 planar buccal surface and a relatively straight lingual surface
molar
All proximal heights of contour coincide with proximal contact areas
Proximal contact areas of all posterior teeth generally are
—— and —— to the midpoint of the crown
Proximal contact areas of all posterior teeth generally are buccal and occlusal to the midpoint of the crown
wider buccolingually than mesiodistally
Maxillary molars
wider mesiodistally than buccolingually
Mandibular molars
are the most variable teeth morphologically
Upper and lower 3rd molars
are second most variable teeth morphologically
maxillary lateral incisors
Permanent mandibular first molars begin calcification
(formation) at birth
which one erupts first
mandibular or maxillary counterpart
Mandibular teeth erupt before maxillary counterpart
largest teeth in the maxillary arch
max molars
Shorter occlusogingivally
ant tooth or max molars
permanent max molars
max molars
largest; small
1st; 2nd molar
Crowns of max molars are wider —- than —-
Crowns are wider buccolingually than mesiodistally
Three roots normally
permananent max molar
2 buccal 1 lingual
Oblique ridge and distolingual groove
max molars
rhomboid outline
max molars
(M# heart)
first max molars have
fifth cusp (Carabelli) and is smallest of cusps
arrange the cusps of max molar based on size
ML
DB
MB
DL
(ML>MB>DB>DL)
erupts at age 18
max third molar
sometimes congenitally missing
max 3rd molar
Most variable tooth morphologically in the maxillary arch
max 3rd molar
tf
max M3 is larger in all dimensions than M2
Smaller in all dimensions than M2
short roots
Max M3
roots pronounced and distal inclination
max m3
irregular profile from the mesial and distal aspect
crown of M3
Oblique ridge of Max M3
barely visible
Common occlusal outline form is heart shaped due to very small or totally absent DL cusp
Max M3
max m3
Pit and groove pattern more variable
Crowns appear rectangular from the occlusal aspect
mand molar
mand m1
crown is pentagonal
mand molars Much larger than premolars except
occlusogingivally where they are slightly shorter
arrange the mand molar in terms of size
M1
m2
M3
M1>M2>M3
mand molar
Crowns are wider mesiodistally than buccolingually
Always two lingual cusps of approximately the same size
mand molar
Like their maxillary counterparts, no primary predecessors
mand molar
proximal aspect of mand molar
crowns appear rhomboidal and are inclined toward the lingual
M and D roots
mand molars
no primary predecessors
mand molars
No —— in the primary dentition
No premolars in the primary dentition
All primary teeth begin calcification process
4-5 months in utero
All primary teeth emerge (erupt) by
age 2-3 years (2.5 years average)
Roots of primary teeth complete formation approximately
1-2 years after eruption
roots are about —- formed at eruption
half
Roots begin to resorb approximately—- years before —-
Roots begin to resorb approximately 2-3 years before exfoliation
Primary dentition exists until beginning of —– dentition with the emergence (eruption) of the permanent first molars at age —–
Primary dentition exists until beginning of mixed dentition with the emergence (eruption) of the permanent first molars at age six
permanent 1st molars
erupt distal to the primary second molars
permanent molars
have no primary predecessors
Erupts at approximately age seven
Maxillary Central Incisor
erupts at age 8
max lat incisors
Mandibular Central Incisor
Erupts between age 6-7
Erupts at age 7-8
Mandibular Lateral Incisor
age 10
max second pre molars
Maxillary First Premolar erupt
age 9
max canine; mand canine
11-12;9-10
erupt at age 9
mandib 1st pre-molar
mandib 2nd pre-molar
erupt at age 10
erupt at age 6
Maxillary First Molar
erupt age 12
max second molar
max 3rd molar
(Erupts at age 18+)
Erupts at age 12
mand M2
erupt at age 6
Mandibular First Molar
4 lobes 1 cusp 1 root 1 root canal
Max central incisor
lateral incisor
canine
tf max P1 have 1 cusp 1 root 1 root canal
F
have 2 of each
tf max and mandible
central incisor lat incisor and canine P1 have 5 lobes
F
all have 4 lobes
tf all teeth have facial cervical HOC at Cervical 1/3
T
nill distal contact
M3( max and mindible)
only teeth to have incisal 1/3 distal contact
(others are middle 1/3)
(maxilla central incisor is at junction)
Mandible central incisor
Lateral incisor
distal contact at junction
maxilla central incisor
middle 1/3 mesial contact
maxilla, mandible
P1
P2
M1 M2M3
max and mandible central incisor
incisal 1/3 contact
mesial contact
diff between mesial contact of maxilla , mandible
lat incisor and canine
maxilla
junction
mandible
middle 1/3
1 or 2 roots canals on mandible
lat incisor
1 or 2 roots on mandible
canine
2 cusps on mandible
P1
4 lobes on mandible
Central incisor
lat incisor
canine
P1
M2
4 or 5 cusps on maxila
M1
4:3 cusp on maxilla
M2;M3
3 roots on maxilla
M1-M3
3 or 4 root canals on maxila
M1 or M2
tf M3 of maxilla has 2 cusps roots root canals
F
alll 3
tf P2 and M2 have 4 lobes on maxilla
T
tooth on maxilla with 5 lobes
M1
4 or 5 lobes
M3 on maxilla
lobes; cusps; roots on maxilla
4;2;1;
vs 4;4;3
P2 vs. M2
tooth on maxilla with 4 or 5 cusps
M1
3 or 4 root canals on maxilla
M1 or M2
4 or 5 lobes on maxilla
M3
cervical 1/3 lingual hoc on mandible
central inc, lat inc, canine
tf all teeth on mandible have middle 1/3 distal contact
F
central and lat incisor dont
only teeth on mandible that don;t have middle 1/3 mesial contact, but have incisal 1/3
central incisor
lat incisor
canine
cervical 1/3 lingual hoc
central incisor, lat incisor, canine
on mandible
tf most of teeth on mandible have middle 1/3 lingual hoc
T
except incisors and canine
only teeth of mandible to have 5 lobes
P1 , P2
tf M3 of mandible can have only 4 lobes
F
4 or 5
4 or 5 lobes, cusps
M3 of mandible
4 lobes and 2 cusps on mandible
P1
lobes; cusps. roots on mandible
5;5;2
M1
3 or 4 root canals on mandible
M1, M2
4;4;2 on mandible
(lobes, cusps, roots)
M2
3 or 4 root canals on mandible
M1,M2
tf M3 of mandible can have 1 root canal
F
2 to 4
3 or 4 root canals on mandible
M1,M2
2;1;1
cusps;roots; root canal
of mandible
P1 on mandible
1 or 2 roots on mandible
canine
5;5;2
lobe; cusps;roots of mandible
M1
4;4;2
root, crown, lobe
of mandible
M2
3 or 4 root canals on mandible
M1 M2
2;1;1
cusp; roots; root canal
on mandible
P1
2 or 3 cusps on mandible
P2
1 or 2 roots on mandible
canine
2 roots on mandible
M1
M2
M3
5 lobes and cusps vs
4 lobes and cusps
on mandible
M1 vs. M2
3 or 4 root canals on mandible
M1 and M2
