Term
| How many lobes do pre-molars develop from? |
|
Definition
|
|
Term
| Pre-molars have crowns that are longer than ____ but shorter than _____? |
|
Definition
|
|
Term
| Pre molars can have how many roots? |
|
Definition
|
|
Term
| Mandibular second premolar has a 50% chance of having how many cusps and lobrs |
|
Definition
|
|
Term
| Premolars look like what geometric shape when viewed facially |
|
Definition
| Trapezoid with base at the occlusal surface |
|
|
Term
| What is a transverse ridge |
|
Definition
| Union of two triangular ridges that cross the occlusal surface in a straight fashion |
|
|
Term
| What is a triangular ridge |
|
Definition
| Triangular ridge is a ridge associated with a cusp tip. Every cusp tip has a triangular ridge. The base of the triangular ridge is at the cusp tip with the apex on the occlusal surface |
|
|
Term
|
Definition
| The union of two triangular ridges that traverses the occlusal surfcae at an angle |
|
|
Term
| What shape do premolars form when viewed proximally? |
|
Definition
| Trapezoid with base at the cervix (opposite of facial) |
|
|
Term
| For numbers 5 and 12, which buccal cusp ridge is longer, the mesial or distal |
|
Definition
| The mesial buccal cusp ridge is longer. |
|
|
Term
| What numbers are the maxillary 1st premolars? |
|
Definition
|
|
Term
| What number is the permanent maxillar right 1st premolar |
|
Definition
|
|
Term
| What number is the permanent maxillary left 1st premolar |
|
Definition
|
|
Term
| For 5 and 12, the lingual cusp is centered mesially or distally? |
|
Definition
|
|
Term
| Posterior teeth have contacts that are ____ compared to anterior teeth |
|
Definition
|
|
Term
| on the mesial surface of 5 and 12, what important landmark can we see |
|
Definition
| mesial marginal ridge groove. The central developmental groove continues onto the mesial surface, splitting the mesial marginal ridges |
|
|
Term
| For 5 and 12, why is the mesial marginal ridge discontinuous vs the distal marginal ridge |
|
Definition
| mesial marginal ridge groove that is an extension of the central groove |
|
|
Term
| Depression on the mesial radicular surface of 5 and 12 is a result of what? |
|
Definition
| Mesial marginal ridge groove that extends apically. |
|
|
Term
| For 5 and 12, which cusp is larger? |
|
Definition
| Buccal is larger than lingual |
|
|
Term
| 5 and 12 have how many roots? |
|
Definition
| Bifurcated (b and l roots). Can have one root, but two canals as wlel |
|
|
Term
| For 5 and 12, which surface has more prominent line angles |
|
Definition
| The buccal side has more prominent line angles while the lingual side is more convex |
|
|
Term
| Which dimension is 5/12 greatest in |
|
Definition
| Facio-lingual dimension is the greatest |
|
|
Term
| For 5 and 12, when viewed occlusally, which marinal ridge is bigger |
|
Definition
| The distal marginal ridge is longer than the mesial marginal ridge |
|
|
Term
| The occlusal table of 5 and 12 looks like what shape? |
|
Definition
| trapezoid (buccal surface wider than lingual--tooth tapers from lingual) |
|
|
Term
| When looking at 5 and 12 labillay, what can you see? |
|
Definition
| The lingual surface and the outlines of the buccal cusp ridges |
|
|
Term
| Root trunk for 5 and 12 is unique, why? |
|
Definition
| It is relatively long (cerivico-apically) compared to other teeth |
|
|
Term
| T/F Lingual and buccal cusps are aligned for 5 and 12? |
|
Definition
| F. Lingual cusp is more mesially aligned. Buccal cusp more distally placed |
|
|
Term
|
Definition
Lingual = middle 1/3
Facial = gingival 1/3 |
|
|
Term
|
Definition
|
|
Term
| What anatomical borders frame the occlusal table for premolars? |
|
Definition
| B/L cusp tips, B/L cusp ridges, D/M marginal rdiges |
|
|
Term
| Proximal contacts of 5 and 12? |
|
Definition
| middle third (to jucntion of middle occlusal); distal more cerivcally placed than mesial |
|
|
Term
| What numbers are the maxillary 2nd premolars |
|
Definition
|
|
Term
|
Definition
4 = permanent maxillary right 2nd premolar
13 = permanent maxillary left 2nd premolar |
|
|
Term
| Tooth + tooth in occlusion = #? |
|
Definition
|
|
Term
| For 4 and 13 facially, how does it compared to 5 and 12 |
|
Definition
| Less angular, DBCR>>>MBCR, cusp tip not as sharp |
|
|
Term
| How many roots/canals do 4 and 13 have? |
|
Definition
|
|
Term
| Which cusp is larger in 4/13 |
|
Definition
| equal. Both cusps are equal in height and width |
|
|
Term
|
Definition
Buccal - gingival 1/3
Lingual - middle 1.3 |
|
|
Term
| Do 4,5,12,13 have dilacerions and which? |
|
Definition
| All have distal dilacerations |
|
|
Term
| How do 4 and 13 differ from 5 and 12 occlusally? |
|
Definition
"wrinkly neighbor"; central developmental groove less defined because of a lot of supplemental grooves
4/13 are less angular and more rounded (5/12 are sharp buccally and rounded lingually) |
|
|
Term
|
Definition
|
|
Term
| Cusp ridges on 4,5,12,13 run from where to where? |
|
Definition
|
|
Term
| T/F the buccal and lingual cusps are aligned for 4 and 13? |
|
Definition
| T, similar height and width. |
|
|
Term
| Where are the radicular grooves for 4,5,12,13? Where does the radicular groove for 5 and 12 originate? |
|
Definition
5/12 mesial = marginal ridge groove that extends onto the root
4/13 distal root depression |
|
|
Term
| How does the CEJ change as you go from anterior to posterior? |
|
Definition
|
|
Term
| T/F a mesial marginal ridge depression exists on 4/13 like 5/12? |
|
Definition
| False. There shouldnt be one. |
|
|
Term
| Mandibular 1st premolar develops from how many lobes? |
|
Definition
|
|
Term
| Mandibular 2nd premolar develops from ho many lobes |
|
Definition
| Typically develops from 5 lobes |
|
|
Term
| What numbers are the mandibular 1st premolars? |
|
Definition
21 permanent mandibular left 1st premolar
28 permanent mandibular right 1st premolar |
|
|
Term
| what numbera are the mandibular 2nd premolars |
|
Definition
20 - permanent mandibular left 2nd premolar
29 - permanent mandibular right 2nd premolar |
|
|
Term
| Facially, 21 and 28 look like what geometric shape? |
|
Definition
| trapezoid with base at occlusal surface |
|
|
Term
| Proximally, 21 and 28 look like what shape? |
|
Definition
|
|
Term
| For 21 and 28, which buccal cusp ridge is larger? |
|
Definition
|
|
Term
| 21 and 28 resemble which tooth? |
|
Definition
| Looks a lot like a mandibular canine (22/27) |
|
|
Term
| Facially, the buccal cusp of 21 and 28 is located ? |
|
Definition
| Mesial to a line bisecting the root in a m-d dimension |
|
|
Term
| For 21/28, which cusp is in contact with maxillary arch |
|
Definition
| Buccal cusp only. Lingual cusp is tiny |
|
|
Term
| 21 and 28 from the lingual show what? |
|
Definition
Large portion of buccal cusp/triangular ridge
Mesio-lingual developmental groove |
|
|
Term
| The lingual cusp resembles a cingulum on 21 and 28 because? |
|
Definition
| The lingual cusp is so small |
|
|
Term
| 21 and 28 have a _____ that separates the mesial and distal occlusally |
|
Definition
| Transverse ridge that connects the lingual and buccal triangular ridges |
|
|
Term
|
Definition
Facial - gingival 1/3
Lingual - middle 1/3 |
|
|
Term
| Why is there a lingual tilt to the occlusal table of 21 and 28? |
|
Definition
the buccal cusp is so large and wide it displaces the occlusal table lingually.
Also, mandibular teeth have a lingual inclination |
|
|
Term
| The occlusal profile of 21 and 28 is what geometric shape? |
|
Definition
|
|
Term
| Viewing mesially, why can you see more of the lingual anatomy of 21 and 28 than when viewing distally? |
|
Definition
| The mesial marginal ridge has a greater slope comapred to the distal marginal ridge. Additionally, the MMR is more cervically oriented. |
|
|
Term
| Which facial aspect of 21/28 can you see more of when viewing the tooth occlusally? |
|
Definition
| Buccal because the buccal cusp is so big |
|
|
Term
| What are the numbers for the mandibular 2nd premolars |
|
Definition
|
|
Term
| What shape would the central groove of 20/29 form on the occlusal surface if there are 3 cusps |
|
Definition
|
|
Term
| What shape would the central groove of 20/29 form on the occlusal surface if there are 2 cusps |
|
Definition
|
|
Term
| 20 and 29 have how many roots |
|
Definition
|
|
Term
| When compared to 21/28, which dimension is greater in 20/29? |
|
Definition
|
|
Term
| 20/29 may have how many lingual cusps |
|
Definition
|
|
Term
| How many developmental lobes will 20/29 develop from if there are 3 cusps? |
|
Definition
|
|
Term
| How many cusp will 20/29 have if there are 5 lobes? |
|
Definition
|
|
Term
| Order cusp height for 20/29 |
|
Definition
|
|
Term
| Which lingual cusp is the largest for 20/29 |
|
Definition
|
|
Term
|
Definition
Facial - gingival 1/3
Lingual - middle 1/3 |
|
|
Term
|
Definition
|
|
Term
| The only permanent tooth where the MBCR > DBCR? |
|
Definition
|
|
Term
| Prominent midfacial lobe on 5 and 12 is called? |
|
Definition
|
|
Term
| Proximal contacts of 5 and 12? |
|
Definition
Mesial - Occlusal 1/3
Distal - middle 1/3 |
|
|
Term
| Proximal contacts 4 and 13 |
|
Definition
| Mesial/Distal - middle 1/3 |
|
|
Term
| Compare the central developmental grooves of 5/12 and 4/13 |
|
Definition
| The groove of 5/12 is longer than 4/13 |
|
|
