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