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76 Cards in this Set
- Front
- Back
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What is the strongest and largest tooth in the mandibular arch
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Mand 1st Molar
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how many cusps are on the mand 1st molar
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5 - 3 facial(mesiofacial, distofacial an distal) and 2 linguals(mesiolingual and distolingual)
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what is the smallest and which is widest cusp on the mand 1st molar
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distal smallest, mesiofacial widest
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Which direction is the crown of the mand 1st molar widest
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mesiodistal(mand 2nd has same attribute, 3rd is very circular)
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What is the width relationship between maxillary and mandibular molars
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maxillary are widest faciolingually in contrast to mand being widest mesiodistally
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Do mand molars have an oblique ridge
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no, only maxillary have oblique ridge
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How many fossae do the mand 1st molars have
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3 mesial, distal and central(just like max 1st molar)
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Which fossa of the mand 1st molar is largest
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central
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which cusp on the mand 1st molar has a triangular ridge that doesnt contribute to the central fossa's borders
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Distofacial
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How many grooves originate from the central fossa of the mand 1st molar
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4 (mesial, distal, facial and lingual)
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What structures does the distofacial developmental groove run between on the mand 1st molar
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Distofacial cusp and distal cusp
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How many total grooves does the occlusal surface of the mand 1st molar have
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5 (mesial, distal, facial, lingual and distofacial)
NOTE: the distofacial doesnt originate from central groove like the others do |
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do the mesial and distal borders of the mand first converge towards the lingual
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yes because facial bordre is wider than lingual,
NOTE max 1st molars dont converge towards lingual |
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How many cusps on the mand 1st molar have lingual ridges that are triangular ridges
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3, all the facial cusps
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is the faciooclussal line angle of the mand 1st molar convex or is it the linguoclussal line angle that is convex
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faciooclussal is convex
linguooclussal is more straight |
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Which of the 5 cusps on the mand 1st is longest
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mesiolingual
NOTE mesiolingual slightly longer than distolingual, but distofacial is longer than mesiofacial |
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Which cusp is shortest on the mand 1st molar
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distal
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Which 2 cusps form the majority of the facial aspect of the mand 1st molar
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mesiofacial and distofacial
NOTE distal forms very little of facial aspect |
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What is the most rounded of the 3 facial cusps on the mand 1st molar
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distofacial
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What area does the facial groove("buccal groove")termintate in on the facial aspect of mand 1st molar occlusocervically
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middle third
NOTE termination is called buccal pit or facial pit. Distofacial groove also fades out in middle third |
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From the lingual view of the mand 1st molar what 3 cusps are seen
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2 lingual ones(mesiolingual and distolingual) and distal cusp
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Do the facial cusp tips or lingual cusps tips have more pointed edges on the mand 1st molar when viewed from proximal
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lingual
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Which of the two marginal ridges is located higher(more occlusally) than the other on the mand 1st molar
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mesial marginal ridge
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Which marginal ridge of the mand 1st molar has a longer faciolingual dimension
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mesial
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which proximal surface is more convex on the mand 1st molar
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distal
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How many cusps are visible from the distal view of the mand 1st molar
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all 5
DUE TO DISTAL MARGINAL RIDGE BEING LOCATED MORE GINGIVALLY THAN THE MESIAL MARGINAL RIDGE- TOOTH SLOPES FROM MESIAL TO DISTAL |
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Where do both max and mand molars have their contacts located occlusocervically
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middle third of crown
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How do the HOC's of mand and max molars differ and "equivocate"
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The facial of both mand and max are both in cervical 1/3 and 1/2mm
However the linguals differ between the 2 mand molars have lingual HOCs in middle 1/3 and 1 mm but Max lingual HOCs are middle 1/3 and 1/2 mm |
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How are mandibular molars tilted when in the alveolar bone
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lingually, helps to keep tongue out of occlusal surface when chewing
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How many terminal roots do mand molars usually have
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2 - distal and mesial
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Where do prominent developmental depressions reside on mand molar roots(they run from bifurcation up to cervical line)
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facial and lingual surfaces
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Which direction does the bifurcation of the mand molars run
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faciolingually- same as bifurcation
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Mesial and distal root surfaces of mand molars have longitudinal developmental grooves. On which surface are they usually most prominent
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mesial
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Which root of the mand molars is narrower faciolingually
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distal - it also has sharper apex
in contrast mesial root apex is described as more rounded |
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When sitting in the mouth do mand molars tilt slightly distal or slightly mesially
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mesially
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Which terminal root is generally longer on mand molars
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mesial
NOTE root with sharper apex is usually shorter of the 2 |
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Which direction do the roots of mand molars tend curve
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distally
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How many pulp horns does the mand 1st molar have
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5, one for each lobe
NOTE differs from max cause max 1st only has 4 pulp horns |
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how many root canals are most prevalent in mand 1st molars
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3
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When 3 canals are present the larger, kidney shaped single canal is usually located in which root
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distal
NOTE circular 2 canals are in mesial root |
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What are the names of the 3 canals found in mand 1st molars
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distal, facial canal of mesial root and lingual canal of mesial root
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the facial canal and distal canal of the mesial root of the mand 1st molars are usually connected by small horizontal tunnels running in what direction
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faciolingual
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T or F the mand 2nd molar is bigger in all dimensions than the mand 1st molar
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F, mand 2nd is smaller in all dimensions than first
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how many cusps does the mand 2nd molar have
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4, thus 4 lobes
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Which mand molar has the most equally sized cusps
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mand 2nd molar
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which proximal surface of the mand 2nd molar has a longer distance faciolingually
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mesial
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what are the names of the 4 cusps on the mand 2nd molar
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MF, DF, ML, DL
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the occlusal surface of the mand 2nd molar resembles what shape
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oval, with long axis in meisodistal direction
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Does the 2nd mand molar have a similar number of triangular ridges on its occlusal surface as the mand 1st molar
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yes, therefore the mand 2nd also has mesial, distal and central fossae
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How many facial grooves does the mand 2nd molar have running onto its facial surface
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1
NOTE mand 1st has 2, facial groove and distofacial groove |
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How many cusps are visible from a facial view of the mand 2nd molar
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only 2 because they are all 4 equally sized so you only see the 2 on the side your viewing. compared to all 5 being visible on mand 1st molar due to their varied lengths
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Which mand molar has a deeper central fossa, 1st or 2nd
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mand 1st molar
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Which mand molar has more convergence mesiodistally towards the lingual, 1st or 2nd
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1st
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which groove facial or distofacial of the mand 1st molar comes down lower on the facial surface
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Facial
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rank the 5 cusps of the mand 1st molar in size from largest to smallest
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mesiofacial, mesiolingual, distolingual, distofacial and distal
NOTE for height tallest to shortest it goes mesiolingual, distolingual, distofacial, mesiofacial, distal Pattern rotates if you disregard distal since its last on both lists |
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if a mand 1st molar has 6 cusps where is the 6th cusp located
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between 2 lingual cusps
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what are the eruption ages for the mand molars
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1st 6(6-7), 2nd 12(11-13) and 3rd 20(17-21)
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How many cusps are most frequent on mand 3rd molars
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4
NOTE 5 cusp arrangement tends to have way more supp. anatomy |
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out of the 3 mand molars which has the smallest occlusal table
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3rd
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Which mand molar has more variable roots 1st or 2nd
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2nd
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of the 2 mand molars 1st and 2nd which one has roots that tend to deflect more distally
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2nd
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how many pulp horns does the mand 2nd molar have
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only 4, not 5 like in 1st molar because 2nd only has 4 cusps
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All molars have 2 antagonist upon regular occlusion except for which ones
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max 3rd molars
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Which mand molar would have roots most likely to be fused
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mand 3rd molar
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how many terminal roots are generally found in the mand arch molars and max arch molars
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2 and 3 respectively
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What are the most common number of root canals in both max and mand 1st molars
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4 and 3 respectively
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What are the number of pulp horns most commonly found in max and mand 1st molars
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4 and 5 respectively
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Both the mand and max 1st molars have 5 cusps but how are they diferrentiated
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The max has Cusp of Carabelli and its lingually located while the mand 1st has distal cusp which is facially located
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The eruption of the mand molars follows or precedes the eruption of the maxillary molars
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precedes generally
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upon eruption of the mand 1st molar it is in mesial contact with which tooth
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distal side primary mand 2nd molar
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the shape of the max first molar is described as ______ while the shape of the mand 1st molar is ______
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varies from rhomboid to quadrilateral and
elliptical |
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normally both max and mand 1st molars have _______ cusps and ______ lobes
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5 and 5
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all teeth have 2 antagonists except for which 2 teeth
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mand central incisors and max 3rd molars
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a major difference between mand and max molars is what
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faciolingual widths of crowns
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with molar teeth the names of the different embrasures are
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buccal, occlusal and lingual
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max molars can be differentiated from mand molars by what
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number/arrangement of terminal roots
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