quiz Flashcards
which grooves radiate out from the cental fossa in a mandibular second molar
central, lingual, buccal
which cusp is the largest and longest on a mandibular second molar
mesiolingual
which cusp may be absent on a mandibular first molar
distal
when the distal cusp is absent on mandibular first molar, which groove(s) would not be present
mesiobuccal and distobuccal
which fossae are found on a mandibular first molar
mesial triangular, distal triangular, central
which development groove connects with the lingual groove running in the same direction on a mandibular second molar
buccal
from which view is only one root visible on a mandibular first molar
mesial
which root may occasionally be divided or bifurcated on a mandibular first molar
mesial
which cusp triangular ridge does not meet to form a transverse ridge on a five-cusp first molar
distal
which ridges form the boundaries of the mesial triangular fossa of a mandibular molar
triangular ridge of mesiobuccal cusp, triangular ridge of mesiolingual cusp, mesial marginal ridge
which two pairs of cusp triangular ridges make up or join to form the two transverse ridges on a mandibular second molar
mesiobuccal and mesiolongual and distobuccal and distolingual
list in sequential order the longest to shortest cusps on the mandibular first molar
mesiolingual, distolingual, mesiobuccal, disobuccal, distal
which three grooves radiate out from the central fossa in a maxillary first molar
central, transverse groove of oblique ridge, buccal
which cusp on a maxillary first molar has two ridges; one that forms part of the transverse ridge and the other that forms part of an oblique ridge
mesiolingual
which cusp is the largest and longest on a maxillary second molar
mesiolingual
which cusp is most likely to be absent on a maxillary second molar
distolingual
when the distolingual cusp is absent on a maxillary second molar, which groove(s) would not be present
distal oblique and lingual
of the four fossae on a maxillary first molar, which is the largest
central
from which view are only two roots visible on a maxillary first molar
mesial
which grooves are likely to radiate out of the mesial triangular fossa on the maxillary first molar
mesiobuccal fossa, mesiolingual fossa, mesial marginal ridge groove, central
WHICH TWO CUSPS HAVE THE RIDGES THAT MAKE UP OR JOIN TO FORM THE OBLIQUE ridge on a maxillary molar
distobuccal and mesiolingual
which two cusps have a triangular ridge that make up or join to form a transverse ridge on most maxillary molars
mesiobuccal and mesiolingual
list in sequential order the largest to smallest cusp area on the maxillary first molar
mesiolingual, mesiobuccal, distobuccal, distolingual, cusp carbelli if present
__ molars have mesiodistal greater than faciolingual
mandibular molars
__molars have faciolingual greater than mesiodistal
maxillary
lingual HoC for all molars
middle third
facial HoC for molars
cervical third
mesial contact for all molars located
near junction of middle/occlusal thirds
distal contact on all molars
more cervical near middle third
__crowns tilt lingually relative to root axis
mandibular
__crowns are more centered over the root with no lingual tilt
maxillary
maxillary roots (3)
lingual is longest
distobucal is shortest
mesiobuccal is wider than distobuccal
mandibular roots (2)
mesial longer and wider than distal
__molars are normally wider mesiodistally than occlusocervically
mandibular molars
mandibular first molars have two __ grooves, what are they
2 buccal grooves (mesiobuccal and distobuccal)
proximal contacts of molars
mesial =juntion of middle and occlusal thirds
distal = near middle third
buccal HoC for mandibular molars
cervical third
lingual HoC for mandibular molars
middle third
lingual cusps are more pointed and longer than buccal cusps on which molars
mandibular
on mandibular molars, __marginal ridge is more cervical than __ marginal ridge
distal marginal ridge is more cervical than mesial marginal ridge
mesiobuccal + mesiolingual =
mesial transverse ridge
distobuccal + distolingual=
distal transverse ridge
on mandibular molars, which embrasure (lingual or buccal) is greater
lingual is greater
possible extra lingual cusp on mandibular molars
tuberculum intermedium
extra cusp on distal marginal ridge of first molar is called
tuberculum sextum
mandibular cusp height in order from highest to lowest
ML, DL, MB,DB,D
mandibular cusp size largest to smallest
ML,MB/DL,Db,D
maxillary cusp length and size from greatest to least
ML,MB,DB,DL
where to probe to try and find bifurcation between roots
midbuccal and midlingual
in maxillary molars, __ separates the mesiobuccal and distbuccal cusps but is not caries prone
bucccal groove
on maxillary molars, lingual or buccal grooves and pits are caries prone
lingual grooves and pits
maxillary molars, bears MB,ML, and DB cusps
trigon
bears DL and D
talon
if 4 cusp type maxillary molar, __ridge from mesiolingual to mesiobuccal cusp
transverse ridge
if 4 cusp type maxillary molar, __ ridge from distobuccal triangular ridge and distal cusp ridge of the mesiolingual cusp
obilque ridge
___molars may be covered with tissue flap called operculum
3rd molars
pulp cavity is made of
chamber and canal
root canals; one canal to one foramina
type 1
root canals; two separate canals join at one apical foramina
type II
root canals; two separate canals from chamber continue to two separate apical foramina
type III
root canals; one canal from chamber but splits to two canals and two apical foramina
type IV(4)
pulp horns; these teeth often have 3 pulp horns; mesial, central, and distal correctlating with 3 facial lobes and 3 mamelons
incisors
__ have one pulp horn under one cusp
canines
for incisor pulp horns, which are very pronounced and which one is suttle
mesial and distal are pronounced while central is suttle
__ is the only anterior tooth that may have 2 roots
mandibular canine
normally one pulp horn per __
functional cusp
mandibular first premolars may have only one pulp horn because
nonfunctional lingual cusp
__molars most often have 3 roots and 4 canals (2 in MB root) and four orifices in the chamber
maxillary molars
__molars most often have tw o roots but 3 canals (3 in mesial) and 3 orificesin the chamber floor
mandibular molars
