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Premolars-Mandibular

LLU Tooth Morphology of premolars; high yield * & Blue Book questions

QuestionAnswer
Both mesial and distal HOC at middle third* Mandibular 1st Premolar
Buccal cusp occupies 2/3 of occlusal surface* Mandibular 1st Premolar
Crown inclined lingually* Mandibular 1st Premolar
Buccal cusp tip centered over root midline* Mandibular 1st Premolar
Distal marginal ridge more horizontal* and more occlusal than mesial ridge Mandibular 1st Premolar
Mesial marginal ridge incline of 45-deg* Mandibular 1st Premolar
Mesial marginal ridge more cervical than distal* Mandibular 1st Premolar
Mesial marginal ridge more cervical than distal* (see more of the occlusal surface) Mandibular 1st Premolar
ML groove present* (separates the mesial marginal ridge from the ML cusp ridge) Mandibular 1st Premolar
Outline is diamond-shaped, but Occlusal table is triangular* Mandibular 1st Premolar
Presence of ML groove* (unique) Mandibular 1st Premolar
Pronounced transverse ridge* Mandibular 1st Premolar
Buccal cusp tip centered over root apex.* Mandibular 1st Premolar
Buccal cusp tip centered facial of root tip center.* Mandibular 2nd Premolar
3 pits: mesial, central, distal* Mandibular 2nd Premolar
Buccal cusp tip is facial to tooth midline* Mandibular 2nd Premolar
Cusp tip centered mesiodistally* Mandibular 2nd Premolar
Less taper lingually than 1st* (3-cusp variety possible slight divergence) Mandibular 2nd Premolar
Lingual HOC at occlusal third* (unique) Mandibular 2nd Premolar
Only premolar with lingual groove* Mandibular 2nd Premolar
Has the smallest faciolingual dimension of any posterior tooth. Mandibular 1st Premolar
This is the smallest of the premolars. Mandibular 1st Premolar
Mesiodistal and faciolingual dimensions of posterior teeth, this exhibits the least dimensional difference (0.5-0.8 mm) between the two dimensions of any mandibular tooth. Mandibular 1st Premolar
The occlusocervical location of the distal proximal contact of which molar is uniquely positioned so it is at the same level or slightly occlusal to the location of the mesial proximal contact, a characteristic not present on the other posterior teeth. Mandibular 1st Premolar
Much of the occlusal surface is visible from a lingual view, a characteristic not seen on other posterior teeth. Mandibular 1st Premolar
The lingula cusp is much shorter than the facial cusp, producing a uniquely large differnce between the heights of the facial and lingual cusps. Mandibular 1st Premolar
Has a unique mesiolingual groove that sepaate the mesial marginal ridge from the lingual cusp. Mandibular 1st Premolar
The mesial marginal ridge is located farther cervically than the distal marginal ridge, the only posterior tooth to posses such a relationship. Mandibular 1st Premolar
The occlusal surface tilts lingually, a unique feature not present on other posterior teeth. Mandibular 1st Premolar
The mesial marginal ridge slopes lingually at about a 45-degree angle, a unique characteristic. Mandibular 1st Premolar
The mesiodistal dimension of the lingual half (3-cusp design) frequently meets or exceeds the mesiodistal dimension of the facial half of the crown, a unique feature that is shared with many maxillary first molars--no usual lingual crown taper. Mandibular 2nd Premolar
This is the only premolar with multiple lingual cusps. Mandibular 2nd Premolar
This is the only premolar with a possible lingual groove. (3-cusp variety) Mandibular 2nd Premolar
The lingual height of contour is uniquely located in the occlusal one-third of the crown. Mandibular 2nd Premolar
The only premolar that has a central fossa (3-cusp variety). Mandibular 2nd Premolar
Created by: Carski7
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