Maxillary Molars Flashcards
What is the largest and strongest of the maxillary teeth?
Maxillary first molar
Which root of the maxillary first molar is the longest?
Lingual root
When do maxillary first molars emerge?
Age 6
Max. First molars are wider _____ than _____
Wider buccolingually than mesiodistally
The cusp of carabelli is on what cusp of the maxillary first molar?
Lingual on the mesiolingual cusp
Which root on the maxillary first molar is the broadest?
Mesiobuccal
Which root is the shortest on the maxillary first molar?
Distobuccal
Describe the distobuccal line angle
Obtuse
Mesiobuccal cusp is _____ than _____, cusp slopes meet at an ______ angle
Broader than distobuccal
Obtuse
Distobuccal cusp meet at a ______ angle
Right
Buccal ______ ______ divides the two cusps which ends with a slight dip
Developmental groove
Describe the cervical line of the maxillary first molar
Little curvature, not smooth
Buccal aspect of maxillary first molar. The mesial outline is ______-______ and ______ curving occlusally at contact area
Straight-downward and mesially
On the maxillary first molar, the crest or contact area on the mesial side is _____ the distance from cervical line to tip of cusp
2/3
On the buccal aspect of the maxillary first molar, the distal outline is ______, distal surface is ______.
Convex
Spheroid
On the buccal aspect of the maxillary first molar, the crest of curvature on the distal side is _____ the distance from cervical line to cusp
Half
Point of bifurcation above the cervical line is about ____ on the maxillary first molar
4mm
True or false, on the maxillary first molar, the root usually averages about 1.5 times he length of the crown
False, it is about twice the length of the crown
On the maxillary first molar, the lingual groove goes ____ and _____ to about the _____ of the crown
Mesial and cervically to about the center of the crown
On the maxillary first molar, which cusp is the widest and longest?
Mesiolingual
On the lingual aspect of the maxillary first molar, the mesial outline of the crown forms almost a _____ angle with the mesiolingual cusp
Right
Mesiolingual cusp ridges form an _____ angle
Acute
The distolingual cusp of the maxillary first molar is _____
Round
On the mesial aspect of the maxillary first molar, there is a shallow _______ just occlusal to the crest
Concavity
On the maxillary first molar, describe the crest of curvature on the lingual outline
It is in the middle third
From the mesial aspect of the maxilllary first molar, which cusp is centered over the long axis of the coinciding root most?
Mesiolingual
The mesiobuccal root of the maxillary first molar is about _____ the width of the crown
2/3
On the maxillary first molar, in the mesial aspect, the bifurcation is _____ to the cervical line than on the buccal aspect
Closer
Why on the distal aspect of the maxillary first molar do we see more of the buccal surface?
Due to distal taper
On the distal aspect of the maxillary first molar, the ______ measurement is greater at the mesial surface than the distal due to the _____ of the buccal surface
Buccolingual
Slant
True or false, on the maxillary first molar, the distal marginal ridge dips more sharply to the cervical than does the mesial
True. This exposes the triangular ridges
Which root on the maxillary first molar is “s” shaped?
Distobuccal. It is also the narrowest
Describe the shape of the occlusal surface of the maxillary first molar
Rhomboidal
On the occlusal aspect of the maxillary first molar, the buccolingual measurement is _____ at the mesial
Buccolingual
On the maxillary first molar, the mesiodistal measurement is _____ just lingual to the contact areas than that just buccal to contact areas
Greater
List the size of cusps from highest to lowest on the maxillary first molar
Mesiolingual
Mesiobuccal
Distolingual
Distobuccal
On the maxillary first molar, which cusps form acute angles?
Mesiobuccal
Distolingual
On the maxillary first molar, which cusps form obtuse angles?
Mesiolingual
Distobuccal
On the maxillary first molar, which cusps form the primary cusp triangle?
Mesiolingual and two buccal cusps
Describe the major fossae of the maxillary first molar
Central fossa and distal fossa
Describe the minor fossae of the maxillary first molar
Mesial and distal triangular fossae
On the maxillary first molar, the crown is wider mesiodistally on the ____ than on the _____ side
Wider mesiodistally on the lingual side than on the buccal side
On the maxillary first molar, the oblique ridge is made from the union of the triangular ridge of the _____ cusp and the distal ridge of the ______ cusp
Distobuccal
Mesiolingual
On the maxillary first molar, the groove that outlines the fifth cusp is called the _______
Fifth cusp groove
On the maxillary first molar the distolingual cusp is ______, and the cusp ridge extends _______ lingual than the mesiolingual cusp
Smooth
Farther
Roots on the second maxillary molar are sometimes _____ than the first maxillary molar
Longer
On the maxillary second molar, the _____ cusp is not as large or as well defined than on the maxillary first molar
Distobuccal
On the maxillary second molar, the _____ cusp is smaller
Distolingual
True or false, there may be a fifth cusp on the maxillary second molar
False
True or false… on the maxillary second molar, the buccolingual measurement is about the same
True
On the lingual aspect of the maxillary second molar, the _____ cusp may be seen through the area between the _______ and ______ cusps
Distobuccal
Mesiolingual and distolingual
The apex of the lingual root of the maxillary second molar is in line with the _______ cusp tip, not with the _____ ____ as the first molar
Distolingual
Lingual groove
Which, the maxillary first or second molar has roots that are most spread, extending over the crown outline?
Maxillary first
True or false, on the distal aspect of the maxillary second molar you can see some of the mesiobuccal cusp
True because distobuccal cusp is smaller
Of the maxillary first and second molars, which has larger mesial cusps?
They are the same
Which tooth, the maxillary first or second molars typically has more supplemental grooves and pits?
Maxillary second
The maxillary thirst molar is less well developed but usually resembles what tooth?
Maxillary second molar
True or false. On the maxillary third molar, the roots are rarely fused
False, they are usually fused
How many lingual cusps on the maxillary third molar?
One with no lingual groove
On the maxillary third molar, the ____ roots are typically fused but can have a discrete bifurcation at the _____ third
Buccal
Apical
From which surface of the maxillary third molar can you see more of the occlusal surface? Can you see more on this tooth than the second maxillary molar
Distal due to angulation of crown to root
Yes
What are the functioning cusps of the maxillary thrid molar?
Two buccal, one lingual
