Term
| What are the only teeth with no tooth in proximal contact with the distal surface |
|
Definition
|
|
Term
| What are the functions of molars? |
|
Definition
• Mastication (grinding)
• Maintenance of vertical dimension of face
• Maintenance of arch continuity for proper alignment
• Support cheeks (esthetics) |
|
|
Term
| All molar crowns taper from buccal (wider M-D on the buccal side) except which molar? |
|
Definition
All molar crowns taper from buccal to
lingual EXCEPT maxillary first molar which
has a large distolingual cusp |
|
|
Term
What is the facial height of contour of molars?
What is the lingual height of contour? |
|
Definition
• Facial height of contour is in cervical
third (as on all teeth)
• Lingual height of contour is in middle
third (as on all posterior teeth) |
|
|
Term
Where is the mesial contact for molars?
Distal contact? |
|
Definition
• Mesial contact located near junction
of middle/occlusal thirds (on all
molars)
• Distal contact is more cervical than
mesial contact (on all molars) |
|
|
Term
| What is the largest maxillary tooth |
|
Definition
|
|
Term
| On the maxillary first molar, is the distobuccal or mesiobuccal cusp wider and longer? |
|
Definition
|
|
Term
| On the maxillary first molar, which is the longest cusp tip? |
|
Definition
|
|
Term
| Which groove is not caries prone? |
|
Definition
Buccal groove separates the
mesiobuccal and distobuccal
cusps. This groove is not
caries prone. |
|
|
Term
| How many root do max molars have? What are they called and which is shortest/longest? |
|
Definition
• Three roots
– Palatal longest of the 3 roots
between mesiobuccal and
distobuccal roots
– Distobuccal shortest of the 3 roots
– Mesiobuccal longer and wider
than distobuccal root |
|
|
Term
| Does the first or second max molar have a shorter root trunk? |
|
Definition
Root trunk on max first molar is shorter
than on second max molar |
|
|
Term
| Do the roots diverge more on the first or second max molar? |
|
Definition
Roots diverge more on first than on
maxillary second |
|
|
Term
| Are you more likely to see the proximal surface from the lingual view on max first or second molar? |
|
Definition
• More proximal surface can be
seen on second molar where
distolingual cusp is smaller or
sometimes missing |
|
|
Term
| In both the first and second molars, is the DL or ML cusp longer/taller? |
|
Definition
|
|
Term
| Which max molar has ML and DL cusps that are almost equal in width? |
|
Definition
|
|
Term
| On the second max molar, is the DL or ML cusp wider? |
|
Definition
|
|
Term
| Which grooves and pits are caries prone on BOTH the 1st and 2nd max molars? |
|
Definition
|
|
Term
| What is longest root on max molars? |
|
Definition
• Longest root:
lingual root
often has
longitudinal
depression on
lingual surface |
|
|
Term
| Does the first or second have distobuccal and mesiobuccal roots that are closer together |
|
Definition
Distobuccal and
mesiobuccal
roots are closer
together on
second than first |
|
|
Term
| How many cusps are visible from the mesial view? |
|
Definition
Only two cusps (plus Carabelli)
visible from mesial since distal
cusps are shorter than mesial
cusps |
|
|
Term
| How many cusps are visible from the distal view? |
|
Definition
Four cusps visible from distal
since mesial cusps are shorter
than distal cusps |
|
|
Term
Where is the buccal height of contour?
Where is the lingual height of contour? |
|
Definition
Buccal height of contour is in cervical third
Lingual height of contour is in middle third |
|
|
Term
| Some of the facial and lingual surface may be visible from the mesial or distal view? |
|
Definition
From distal view, some of facial
and lingual surface may be
visible due to crown tapering
narrower toward distal |
|
|
Term
| Will the occlusal surface be more visible from the mesial or distal view? |
|
Definition
Mesial marginal ridge is more
occlusal than distal, so more
occlusal surface is visible from
distal view |
|
|
Term
On which tooth is Cusp of Carabelli common on?
Which cusp will it be present on? |
|
Definition
Common on Max 1st, Occasionally on Max 2nd
when present: it is on the ML cusp |
|
|
Term
| What does the oblique ridge connect? |
|
Definition
connects DB and ML cusps
“Martin Luther and Daniel Boone” |
|
|
Term
Which are the functional cusps?
Which are the non functional cusps? |
|
Definition
• Functional cusps
– Maxillary=L
– Mandibular=B
• Non-functional cusps
– Maxillary=B
– Mandibular=L |
|
|
Term
| What is the line that runs mesiodistally through the posterior teeth in each quadrant |
|
Definition
|
|
Term
What is the line that runs through the buccal cusp tips of
mandibular teeth |
|
Definition
|
|
Term
What is the line that runs through the Li cusp tips of
maxillary teeth |
|
Definition
| linguo-occlusal line (LO) |
|
|
Term
What make up approx 50 to 60% of the surface of the B-L
dimension of posterior teeth |
|
Definition
|
|
Term
| How is the occlusal table positioned? |
|
Definition
| -Positioned over the long axis of the root – allows forces to be along the long axis |
|
|
Term
What is the fraction of functional cusps?
What is the fraction of non-functional cusps? |
|
Definition
-Functional cusps: 1/3
-Non-functional cusps: 1/6 |
|
|
