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41 terms

maxillary molars...

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max 1st molar
#3 and 14 largest molar
first permanent tooth to errupt on max arch
5 cusps
how many lobes does max 1st molar have?
5 lobes according to five cusps
what are the five cusps?
ML, MF, DF, DL, carabelli
Between MF and DF cusp there is a
facial groove an dpit
what shape is max 1st molar?
trapezoidal, square or rhomboid shape
have a development buccal groove dividing into 2 symmetrical portions
buccal groove oringates at central pit and emerges from between
the two facial cusps
terminal of buccal groove is marked by
buccal pit
DL cusp is
sharp and less developed
From lingual view
ML longest than DL is shortest of all 4 cusps
DL groove & pit-divides tooth how many portions?
2 portions
Carabelli is
supplemental/accessory cusp, varies in size
cusp of carabelli groove
not preseint in all dentition
appear as a groove or cusp or may be absent
not major cusp
Maxillary 1st has
mesial crest is deeper
mesial concavity
DL are lower than table
Maxillary 1st molar-occlusion
grooves are M+D, marginal, triangular, DL, ML, Facial

pit
central grooves runs MD direction between
the mesial pit and distal pit
DL groove extends onto, L surface & separates MI cupz from the DL cusp
ML groove separates teh cusp of carabelli on the occlusal surface
obblique ridge
separates the D fossa from central fossa
Each cusp has a triangular ridge
transverse ridge formed by
buccal triangular ridge of mesiolingual cusp and lingual triangular ridge of mesiobuccal cusp
carabelli-min or non functional cusp
oblique ridge=
only maxiiary molars
union of 2 ridges running obliquely across teh
occlusal surface
on the max 1st molar, oblique ridge is made up of
D ridge of ML cusp and the triangular ridge of DF cup
3 molar cusps form a triangule if lines are drown to connect their cusp tips
df mf dl
oblique ridge sepearates
D fossa and central fossa
trifercation
2 or F side
1 root on L side
by size of root
lingual/palatal-curves in F largest, longests, strongest. has longitiudinal grooves,
MF curves to D and wider longer of the F roots
DF
straight to D smallest
horns of max molar
3-4, lingual palatal, largest, oval to round, mf 1-3 canals rough. Df small round
contacts
mm,
facial cervical
middle thirdy
max 2
#2 and #15
max 2nd
less distinct F groove no facial pit
no cups of carabelli
4 lobe=4 roomates
no fifth cusp
4 cus tp centered over lingual area
no fith cusp rinse
dl cusp centered overl light areas
ml cups i slonger and larger
dl cusp is short
3 cusps
ml MF DL
pits
MD
distal margincal ridge same as
oblqiue ridge
grooves
central marginal triangular supplemental
4 cusps
ml, fm, df, dh. 2 traingular anatomy
pits cmd grooves cnetral marginal and DB subplemenat
roots of max 3
3 roots,m l, mf, dm, on pulp hard per cusps 3-4 mm
1-2 of root
concats
mm, LM.5 3 o4 for lobes
1 16 max molars
wisdom, may be errupted by 17 most lkely to be missing, impactation mneasn beflore surface, gernally DL cusp abesnt
which sups is gernally abesnt
Distal lingual
smallerst molar
root birfurcated, deep developmental grooves
contacts
no contact