300 Dental Anatomy Facts

Question 1

The lingual concavity of the maxillary anterior teeth is most influenced by

Answer 1

The lingual concavity of the maxillary anterior teeth is most influenced by the side shift of the mandible

Question 2

The incisal embrasure between maxillary central incisors is [BIGGER/SMALLER] than the embrasure between central incisors and lateral incisors

Answer 2

SMALLER embrasure between max centrals than between central and lateral.

Question 3

Which structure on an incisor is the first to calcify?

Answer 3

The incisal edge of anterior teeth is the first to calcify.

Question 4

In delayed resorption of primary incisors, the permanent incisors will erupt in which direction?

Answer 4

In delayed resorption of primary incisors, the permanent incisors will erupt LINGUALLY.

Question 5

When viewed from the proximal, what is the geometric shape of incisors?

Answer 5

When viewed from the proximal, the geometric shape of incisors is TRIANGULAR.

Question 6

From how many lobes are anterior teeth formed?

Answer 6

Anterior teeth are formed from FOUR LOBES.

Question 7

Which posterior teeth are wider mesiodistally than faciolingually?

Answer 7

MANDIBULAR MOLARS are the only posterior teeth that are wider mesiodistally than faciolingually.

Question 8

What is the relationship between the number of cusps in posterior teeth and the number of lobes?

Answer 8

They are correlated.

Question 9

Which anterior teeth are wider mesiodistally than faciolingually?

Answer 9

maxillary incisors are wider mesiodistally than faciolingually

Question 10

The contact between the maxillary central incisor and lateral incisor does what to the embrasure sizes?

Answer 10

The contact between CI and LI make the lingual embrasure larger than the facial embrasure.

Question 11

In maxillary premolars, the lingual cusp is offset to the

Answer 11

In max PM, the lingual cusp is offset to the mesial. The first PM is tilted more than the second PM.

Question 12

Which premolars are wider faciolingually than mesiodistally?

Answer 12

ALL premolars are wider faciolingually than mesiodistally.

Question 13

From the occlusal view, which angles tend to be acute in maxillary molars?

Answer 13

Mesiofacial and distolingual are ACUTE.

MF and DL = ACUTE.

Question 14

From the occusal view, which angles tend to be obtuse in maxillary molars?

Answer 14

Mesiolingual and distofacial are OBTUSE
ML and DF = OBTUSE.    
[the ML-class is an OBTUSE vehicle]

Question 15

Which cusp of the maxillary first molar occludes with the central fossa of the mandibular first molar?

Answer 15

The MesioLingual cusp occludes with the central fossa of the mandibular first molar.
[think of an ML-class vehicle driving through the fossa]

Question 16

The oblique ridge of maxillary molars connects which cusps?

Answer 16

The oblique ridge connects the ML and DF cusps.

The oblique ridge coincide with the obtuse corners