Tooth Descriptions

Question 1

Which one of the permanent teeth listed below best fits this description?

It has two roots, one medial and one distal and has five cusps

Answer 1

Lower first molar

Question 2

Which one of the permanent teeth listed below best fits this description?

It has two cusps, an occlusal fissure extending over the medial marginal ridge, a concavity on the medial surface of the crown

Answer 2

Upper first premolar

Question 3

Which one of these permanent teeth types generally has the longest root?

Answer 3

Upper canine

Question 4

As measured from the mesio-incisal corner to the disto-incisal corner, which one of these incisor teeth has the longest incised edge?

Answer 4

Upper central incisor

Question 5

OSCE: During lateral movement of the jaw, this tooth acts as a guidepost with its antagonist

Answer 5

Upper canine

Question 6

OSCE: In this tooth the distal fossa is generally larger than the mesial fossa

Answer 6

Lower second premolar

Question 7

OSCE: This tooth has a pit on its buccal surface which is at increased risk of caries

Answer 7

Lower first molar

Question 8

OSCE: This tooth has the mesial surface more deeply grooved than the distal and shows a concavity in the cervical region

Answer 8

Upper first premolar

Question 9

OSCE: Crown set at an angle to the root, producing convex labial profile from cusp to apex. Often has enamel extending further apically on labial side than on lingual side.

Answer 9

Lower canine

Question 10

OSCE: In this tooth, the lingual cusp is displaced distally. A small groove often runs from the mesial pit on to the mesial lingual surface.

Answer 10

Lower first premolar

Question 11

OSCE: The crown is by largest of the four incisors. Being almost as wide as it is long.

Answer 11

Upper central incisor

Question 12

OSCE: Usually, this tooth has four cusps of similar size. The occlusal surface is almost square.

Answer 12

Lower second molar

Question 13

OSCE: This tooth is diamond shaped, with the longer diagonal extending from the mesio-buccal to the disto-palatal cusp.

Answer 13

Upper first molar

Question 14

OSCE: The two cusps are similar in width and height, due to the reduction in size of the buccal cusp.

Answer 14

Upper second premolar

Question 15

OSCE: The lingual surface has two pronounced marginal ridges. Sometimes, where the ridges meet at the cervix, they enclose a depression or fossa.

Answer 15

Upper lateral incisor

Question 16

OSCE: Looking at the crown from the mesial and distal aspects, it appears as wedge-shaped and leans lingually. There are faint marginal ridges and a small cingulum.

Answer 16

Lower lateral incisor

Question 17

OSCE: The disto-palatal cusp is greatly reduce, and may be absent. This making the shape of the crown more triangular.

Answer 17

Lower second molar

Question 18

The occlusal plate has a parallelogram shape, allowing the mesial contact point to be positioned buccally

Answer 18

16

Question 19

The incisor edge is widest

Answer 19

11

Question 20

Care must be taken when restoring the mesial surface of this tooth as it has a coronal concavity and overhang can occur

Answer 20

24