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83 Cards in this Set
- Front
- Back
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what is the eruption ages of maxillary molars
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1st 6(6-7), 2nd 12(12-13) and 3rds 18(18-19)
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the widest tooth in the maxillary arch is the
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1st molar
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from occlussal view, the only tooth that can be wider lingually than facialy is the?
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Max 1st Molar
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how many cusps are on the max 1 molar
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4
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what 2 cusps is the oblique ridge located between on the max 1st molar
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Distofacial cusp and mesiolingual cusp
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What is the special cusp that maxillary 1st molars can sometimes have named
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Cusp of Carabelli - located at mesiolingual line angle on mesiolingual cusp
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what is the largest cusp on the max 1st molar
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mesiolingual
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What is the size relationship of the 2 facial cusps on the max 1st molar
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Usually the same, but if one is bigger its the mesial
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Which cusp is the smallest cusp on the max 1st molar - not counting the Cusp of Carabelli
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Distolingual
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Which cusp is the tallest cusp on the max 1st molar
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Mesiolingual
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Which cusp is the shortest cusp on the max 1st molar
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distolingual
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at the time of erruption what tooth is the max 1st molar in contact with mesially
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Primary maxillary 2nd molar
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name the 2 facial cusps on the max first molar
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Distofacial and Mesiofacial
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The cusp of Carabelli lies lingual or facial to the mesiolingual cusp
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Lingual
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Lines connecting the 3 largest cusp tips commonly form what shape
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Triangle
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True of False. The faicolingual diamter is >= the mesiodistal diameter on the max 1st molar
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True
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what are the names of the 3 major cusps that form the "triangle" on the max 1st molar
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Distofacial, mesiofacial, mesiolingual
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of the 3 major cusps on the max 1st molar which is widest mesiodistally
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Mesiolingual
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What two ridges make up the oblique ridge on the max 1st molar
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distal ridge of mesiolingual cusp and triangular ridge of distofacial cusp
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T or F. oblique ridges are only found on the mand molars
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False,
on the max molars have oblique ridges- they all run the same direction |
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list the five(counting carabelli) cusps in size from largest to smallest on the max 1st molar
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mesiolingual, mesiofacial, distofacial, distolingual, Cusp of Carabelli
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The distonlingual cusp's shelf is what in relation to the 3 cusps of the triangle's shelf on the max 1st molar
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lower
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How many fossae are found on the occlusal surface of the max 1st molar
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3, distal, central and mesial
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The oblique ridge separates what two fossae on the max 1st molar
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the distal and central
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what 2 structures separate the mesial and central fossae on the max 1st molar
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the lingual ridge of the mesiofacial cusp and the facial ridge of the mesiolingual cusp
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Where does the facial groove(coalescene of distofacial and mesiofacial lobes)orginate on the max 1st molar
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Central fossa and runs out onto facial surface
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If the oblique ridge is not prominent then sometimes the distal groove crosses it to join the mesial groove and form a common _______ groove
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central groove
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three grooves that run mesialy out of the mesial groove on the max 1st molar are called
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mesiofacial triangular groove, mesiolingual triangular groove and the mesial marginal groove
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there are five grooves that run out of the distal fossae on a max 1st molar, name them
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distal groove, distolingual groove, distofacial triangular groove, distal marginal and distolingual triangular
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what is the name of the groove that separates the Cusp of Carabelli on the maxt 1st molar
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mesiolingual groove
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what two grooves separate the mesiolingual cusp from the distolingual cusp on the max 1st molar
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the distolingual groove off of the distal fossa and the mesiolingual groove just coronal to cusp of Carabelli
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what is the general shape of the max 1st molar as seen facially
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trapezoid
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The intersection between the mesial and facial surfaces to be an _______ angle and the intersection between the facial and distal surfaces makes an ________ angle
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acute, obtuse
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The facial groove terminates in what are on the first max molar
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middle third of crown
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What is the name of the pit found at the end of the facial groove on the max 1st molar
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facial pit(duh)
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Which of the 2 facial cusps on a max 1st molar is widest mesiodistally
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mesiofacial
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a portion of what cusp can be partially seen from a facial view on the max 1st molar, along with obviously being able to see both facial cusps
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the mesiolingual cusp'
Note you can also see a little bit of distal surface due to quadrilateral twist of tooth |
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the four cusps of the max 1st molar from shortest to longest are the
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mesiolingual, distofacial, mesiofacial and distolingual
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from a proximal view of a max 1st molar which surface is more uniformly convex, the facial or lingual
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lingual
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describe the contact areas of the max 1st molar
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occlusocervically both mesial and distal are in middle third, and faciolingually they are slightly facial
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Just cervical to the mesial contact on the 1st max molar is a convex or concave portion of surface found
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concave
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The HOC for the max 1st molars is what
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Lingual- middle 1/3, 1/2 mm
facial - cervical 1/3, 1/2 mm |
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how many roots do the max molars generally have
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3
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the roots of the 1st max molar are name what
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2 facial- mesiofacial and distofacial,
1 lingual |
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the location where the root trunk becomes the root tips is refered to as what
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the furcation
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on a max molars the strongest, largest, and longest root terminal root is which one
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lingual
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The two facial roots are generally the same size but if one is bigger it is usually which one
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mesiofacial
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The order of the 3 roots on max molars from smallest to biggest is
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lingual, mesiofacial, distofacial
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in which direction are the 2 facial roots of max molars the biggest
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faciolingual
NOTE: on lingual root is opposite-wider mesiodistally |
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at the apical third of the lingual root of the 1st max molar, which direction does the root start to lean
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facialy
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how many pulp horns do the max 1st and 2nd molars have
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4
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Even thought there are generally there are only 3 roots on max 1st molars what is suprising about the number of root canals
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there is 4 root canals usually
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Which root on the max 1st and 2nd molar typically have 2 root canals
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mesiofacial-because it gets alot wider in one dimension relative to the other
NOTE: can have either 1 or 2 foramina |
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What percent of 1st max molars have 4 root canals
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60%
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Does a 1st max molar have a longer or shorter root trunk than a 2nd max molar
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1st has a shorter root trunk than 2nd.
General scheme is root trunks get longer as you go more posteriorly |
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What are the 2 root canals found in max 1st and 2nd molars in the mesiofacial root commonly refered to as
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MB1 and MB2
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Describe how the roots of max 1st, 2nd and 3rd molars relate to the confines of the crown
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The first generally exceeds crown confines, the 2nds stays in confines of crown, and the 3rds are mostly fused and definitely inside crown confines
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Where is the pulp chamber generally located on max molars in an occlusoapical direction
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Between teh cervical line and the furcation
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Which crown is taller(occlusocevically), the max 2nd molar or max 1st molar
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max 1st molar is taller
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Whast the relationship between the faciolingual measurement between 1st and 2nd max molars
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about equal
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In the mesiodistal direction which tooth is wider. max 1st or 2nd molar
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Max 1st is wider
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How many cusps are visible in an occlusal view of the max 2nd molar and name them
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4,
mesiofacial, distofacial, distolingual, mesiolingual |
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The max 2nd molar is made up of how many lobes
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4
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The max 2nd molar comes in what two occlusal shaped forms
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Rhomboidal and Heart
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What are the 2 largest cusps on the max 2nd molar
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Mesiofacial and Mesiolingual
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Which max molar tends to have supplemental grooves on the occlusal surface
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Max 2nd molar
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The heart shaped form of the max 2nd molar forms due to what
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poor development of the distolingual cusp
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The heart shaped max 2nd tends to look more like which molar 1st or 3rd
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3rd
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Is the max 2nd molar longer in the faciolingual direction that the 1st molar
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no
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How does the mesiodistal measurement of the max 1st and 2nd molars relate
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they are both about equal
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Compare the facial grooves of max 1st and 2nd molars
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The facial groove is less distinct in the 2nd molar
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Where and how big are the HOCs on the max 2nd molar
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facial- cervical 1/3 1/2mm
lingual-middle 1/3 1/2mm |
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Which max molar has a root form that deviates from the norm more oftenly
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Max 2nd molar
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Which max molar has facial roots that have more convexities and concavities on them
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Max 2nd molar
NOTE: 2nd molars have less curvature of terminal roots than 1st molars |
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In max 1st and 2nd molars one root is blunt, one is less blunt and one is pointed. Name them in that order
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lingual, mesiofacial, distofacial
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Which tooth has more variation than any other tooth in the human dentition
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Max 3rd Molars
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Generally how many cusps are found on the 3rd molar
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3, the distolingual is not present like on 1st and 2nds
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How does the max third molar compare both mesiofacially and occlusocervically when looking at a facial view to that of the 2nd molar
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It is smaller in both dimensions
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The molar with the least distinct facial groove is the
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max 3rd molar
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Compared to the max 2nd molar, the max 3rd has a lingual surface that is more or less pronounced
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more
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of the three max molars, which one is smallest in both faciolingual and mesiodistal directions
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3rd molars
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What are the HOCs of the max 3 molar
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Facial- cervical 1/3 1/2mm
Lingual- middle 1/3 1/2 mm |
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The max 3rd molar may have a few as _______ root(s) and as many as _____ root(s)
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1, 8(Freak)
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