Final Part TRES-Posteriors

Question 1

Perm Max 1st PM-Mesial Vantage point: The mesial proximal contact area is located just ______ to the facial segment. It is also ______ to the mesial marginal groove.

Answer 1

cervical (so its close to the occlusial surface)…..FACIAL to the Mes Mar Groove

Question 2

Perm Max 1st PM- Occlusial Pic> The M and D triangular fossae are _______. ALSO they are _____ to the M and D occlusial outlines.

Answer 2

far apart…..but CLOSE to the M and D outlines (makes sense!)

Question 3

Perm MAX 2nd PM–[Occlusial View]–The triangular ridges are approx ___________ in length.

Answer 3

The same in length

Question 4

Perm MAX 2nd PM–[Occlusial View]– The point where the triangular ridges meet is slightly ______ to the FL bisector.

Answer 4

Lingual

Question 5

Perm MAX 2nd PM–[Occlusial View]–Is there a TRUE/CONTINUOUS transverse ridge?

Answer 5

NO… c/o the central groove separating the triangular ridges

Question 6

Which tooth am I describing? The lingual cusp is not supported by the root structure. In fact, the lingual cusp tip actually is more lingually positioned than the confines of the lingual root surface.

Answer 6

Perm Man 1st PM (very apparent from the M view)

Question 7

Perm Man 1st PM-Occlusial; The M triangular fossa has a M groove at the bottom of it that is ______ in shape and is continuous with the ___ groove.

Answer 7

Linear….ML groove

Question 8

Perm Man 2nd PM-Occlusial View–What are the two shapes? What is the deciding factor?

Answer 8

5 sided (pentagonal)-WELL DEVELOPED FACIAL RIDGE or square

Question 9

Perm Max 1st Molar Lingual view: The M cuspal ridge of the ML cusp meets the relatively straight M outline of the crown at a ___ degree angle.

Answer 9

90 degree

Question 10

Perm Max 1st Molar{DISTAL} The outline of the lingual (palatal) root will be similar to that seen from a _____ view and its ______ shaped!!

Answer 10

Mesial view…Banana shaped!!

Question 11

Perm Max 1st Molar{DISTAL} The apex of the lingual root is vertically positioned between the greatest lingual contour of the crown and the tip of the ___ cusp. Which cusp is it NOT lined up with?

Answer 11

In between the greatest lingual contour and the DL cusp….It is NOT in line with the ML cusp AT ALL!!!

Question 12

Perm Max 1st Molar-Occlusial….. The low point of the oblique ridge is ________ as the depth of the mesial and distal marginal ridges.

Answer 12

at the same level (SO the oblique ridge is the same height as the marginal ridges!)

Question 13

Perm Max 1st Molar-Occlusial…..What is the name of the groove where the oblique ridge has its lowest point?

Answer 13

The TRANSVERSE groove OF the OBLIQUE ridge…AWESOME name

Question 14

Perm Max 2nd Molar–‘Occlusial’ What is the most lingually and distally placed cusp?

Answer 14

the DL cusp…not a trick question :)

Question 15

Perm Max 2nd Molar–‘Occlusial’ The distal oblique groove extends from the distal triangular pit in a lingual direction ______ to the oblique ridge and continues onto the lingual surface as the _______.

Answer 15

parallel…lingual groove!

Question 16

Perm Manny 1st Molar occlusial–Which half (F or L) of the crown is MUCHO wider? POR QUE?

Answer 16

The facial half of the crown is much wider than the lingual half, because of the three facial cusps. (causes a taper from F to L)

Question 17

Perm Manny 1st Molar occlusial–The _______ runs MDally in an _______ direction across the occlusial surface from the mesial triangular pit, through the central fossa, and to the distal triangular pit.

Answer 17

central groove….irregular

Question 18

Perm Manny 1st Molar occlusial–The lingual groove starts in the ______ and travels MINIMALLY over the ______.

Answer 18

Central pit….lingual surface

Question 19

Perm Mand 2nd Molar, Occlusial: The greatest FL measurement is in the ______ half of the crown because the _______ is more prominent on the MF cusp.

Answer 19

Mesial Half…Cervical Ridge

Question 20

Perm Mand 2nd Molar, Occlusial: The facial groove and lingual groove meet the central groove at _____ angles dividing the occlusial surface into M and D halves.

Answer 20

Right angles

Question 21

Perm Mand 2nd Molar, Occlusial: The ___ major grooves present a structure which is said to be a “____” or a “_____” design or even a “____” arrangement because the 4 cusps of equal sign with a plus sign dividing them.

Answer 21

3(tricky tricky)…..”+” or a “cross”….”4+”