DENT101 Dental Anatomy (Premolars)
Why is it important for restored teeth to have interproximal contact points?
Avoid food impaction between teeth Reduce risk of periodontitis and bone loss
True/False The developmental depression on root of maxillary 1st premolar is deeper on the distal surface than mesial surface.
False
From a mandibular buccal view, which tooth has greater O-C crown dimensions?
Mandibular 1st premolar
From a mandibular buccal view, which tooth has greater buccal cusp height?
Mandibular 1st premolar
From a mandibular buccal view, which tooth has greater buccal cusp sharpness?
Mandibular 1st premolar
From a mandibular lingual view, which tooth has a mesial marginal ridge that is more cervical than the distal marginal ridge?
Mandibular 1st premolar
From a mandibular lingual view, which tooth has greater occlusal surface visibility?
Mandibular 1st premolar
From a mandibular mesial view, which tooth has a M-Li groove?
Mandibular 1st premolar
From a mandibular mesial view, which tooth has greater occlusal surface visibility?
Mandibular 1st premolar
From a mandibular mesial view, which tooth has marginal ridges that slopes lingually?
Mandibular 1st premolar
From a mandibular occlusal view, which tooth has a diamond shape?
Mandibular 1st premolar
From a mandibular occlusal view, which tooth has a straight developmental groove?
Mandibular 1st premolar
From a mandibular occlusal view, which tooth has two cusps?
Mandibular 1st premolar
Which premolar has a mesial-lingual groove?
Mandibular 1st premolar
Which premolar has its mesial contact more cervical to its distal contact?
Mandibular 1st premolar
Which premolar has the smallest B-Li crown dimension of any posterior tooth?
Mandibular 1st premolar
Which premolar has the smallest difference in B-Li & M-D dimensions of any mandibular tooth?
Mandibular 1st premolar
Which premolar's mesial marginal ridge tilts lingually at 45 degree angle?
Mandibular 1st premolar
Which premolar has the largest height difference between cusps of any tooth?
Mandibular 1st premolar (Lingual cusp is much shorter than buccal cusp)
From a mandibular occlusal view, which tooth has two pits? Name the pits.
Mandibular 1st premolar Mesial + Distal
From a mandibular lingual view, which tooth has a distal marginal ridge that is more cervical than the mesial marginal ridge?
Mandibular 2nd premolar
From a mandibular lingual view, which tooth has a lingual groove?
Mandibular 2nd premolar
From a mandibular lingual view, which tooth has a taller lingual cusps?
Mandibular 2nd premolar
From a mandibular mesial view, which tooth has a greater lingual cusp height?
Mandibular 2nd premolar
From a mandibular mesial view, which tooth has a slightly more buccally located buccal cusp?
Mandibular 2nd premolar
From a mandibular mesial view, which tooth has a smaller difference in cusp heights?
Mandibular 2nd premolar
From a mandibular mesial view, which tooth has marginal ridges that are horizontal?
Mandibular 2nd premolar
From a mandibular occlusal view, which tooth has a Y-shaped developmental groove?
Mandibular 2nd premolar
From a mandibular occlusal view, which tooth has a larger occlusal table size?
Mandibular 2nd premolar
From a mandibular occlusal view, which tooth has a square or oval shape?
Mandibular 2nd premolar
From a mandibular occlusal view, which tooth has greater B-Li crown dimensions?
Mandibular 2nd premolar
From a mandibular occlusal view, which tooth has three cusps?
Mandibular 2nd premolar
Which premolar is the only premolar with a lingual groove?
Mandibular 2nd premolar (Separates the two lingual cusps).
From a mandibular occlusal view, which tooth has three pits? Name the pits.
Mandibular 2nd premolar Mesial + Central + Distal
Which premolar is the only premolar with multiple lingual cusps? How many lingual cusps are there?
Mandibular 2nd premolar Two lingual cusps (separated by lingual groove).
From a maxillary buccal view, which tooth has a buccal cusp ridge depression?
Maxillary 1st premolar
From a maxillary buccal view, which tooth has a longer mesial buccal cusp ridge?
Maxillary 1st premolar
From a maxillary buccal view, which tooth has a more prominent buccal ridge?
Maxillary 1st premolar
From a maxillary buccal view, which tooth has a sharper buccal cusp?
Maxillary 1st premolar
From a maxillary buccal view, which tooth has larger O-C crown dimension?
Maxillary 1st premolar
From a maxillary mesial view, which tooth has a a larger cusp height difference?
Maxillary 1st premolar
From a maxillary mesial view, which tooth has a deeper developmental root depression?
Maxillary 1st premolar
From a maxillary mesial view, which tooth has a mesial crown concavity?
Maxillary 1st premolar
From a maxillary mesial view, which tooth has a mesial marginal ridge groove?
Maxillary 1st premolar
From a maxillary occlusal view, which tooth has a greater buccal ridge prominence?
Maxillary 1st premolar
From a maxillary occlusal view, which tooth has a greater mesial displacement of the lingual cusp
Maxillary 1st premolar
From a maxillary occlusal view, which tooth has a mesial marginal ridge groove?
Maxillary 1st premolar
From a maxillary occlusal view, which tooth has more prominent and angular M-B & D-B line angles?
Maxillary 1st premolar
From a maxillary occlusal view, which tooth has pits located closer to the marginal ridges?
Maxillary 1st premolar
Which premolar is the only one where the mesial cusp ridge is long than the distal cusp ridge?
Maxillary 1st premolar
Which premolar has a deep depression on the mesial surface? Name the term.
Maxillary 1st premolar Mesial crown concavity
Which premolar has a deep groove that crosses a marginal ridge? Name the groove.
Maxillary 1st premolar Mesial marginal ridge groove
From a maxillary buccal view, which tooth has a longer distal buccal cusp ridge?
Maxillary 2nd premolar
From a maxillary buccal view, which tooth has a wider cervical neck?
Maxillary 2nd premolar
From a maxillary buccal view, which tooth has greater crown symmetry?
Maxillary 2nd premolar
From a maxillary occlusal view, which tooth has a greater mesial surface convexity?
Maxillary 2nd premolar
From a maxillary occlusal view, which tooth has a more rounded outline?
Maxillary 2nd premolar
From a maxillary occlusal view, which tooth has a slightly shorter developmental groove?
Maxillary 2nd premolar
From a maxillary occlusal view, which tooth has pits located closer to the center of the tooth?
Maxillary 2nd premolar
From a maxillary occlusal view, which tooth has wider marginal ridges?
Maxillary 2nd premolar
Which premolar has buccal and lingual cusps that are the closest in height compare to any other premolars?
Maxillary 2nd premolar
Which premolar has mesial and distal pits closest to one each other more than any other posterior tooth?
Maxillary 2nd premolar
Which premolar has the most symmetrical crown than any other posterior tooth from an occlusal view?
Maxillary 2nd premolar
How many roots does a maxillary 2nd premolar have?
One
Why is it more complicated to clean mandibular 1st premolar? How does this affect oral health?
Presence of mesial groove Development of periodontal disease
How many cusps does a mandibular 2nd premolar have? What are they?
Three (1 Buccal & 2 Lingual)
How many roots does a maxillary 1st premolar have?
Two (buccal + palatal)
Which premolar has much of the occlusal surface visible from the lingual view?
Mandibular 1st premolar
Which premolar is the only posterior tooth whose mesial marginal ridge is cervical to distal marginal ridge?
Mandibular 1st premolar
Which premolar is the only posterior tooth whose occlusal surface tilts lingually?
Mandibular 1st premolar
Which premolar has the greatest M-D crown dimension on the lingual half of the tooth?
Mandibular 2nd premolar
Which premolar is the only premolar with a central pit?
Mandibular 2nd premolar
