Dental Anatomy Lecture 1 Questions_answers

Question 1

What does Mesial mean?

Answer 1

The proximal surface of the tooth nearest the midline

Question 2

What does Distal mean?

Answer 2

The proximal surface of the tooth farthest from the midline

Question 3

Which teeth do not have 2 proximal contacts?

Answer 3

3rd molars

Question 4

Proximal Contact Area

Answer 4

Area on the mesial/distal surface of a tooth that touches its neighbour

Question 5

Which teeth have masticatory incisal surfaces?

Answer 5

Anterior teeth

Question 6

Which teeth have masticatory occlusal surfaces?

Answer 6

Posterior teeth

Question 7

Which teeth have only one masticatory contact point? What is the number of masticatory contact points for all other teeth?

Answer 7

Maxillary 3rd molars and mandibular central incisors. All other teeth have 2 masticatory contacts

Question 8

What is a line angle?

Answer 8

The joining area of 2 perpendicular surfaces (mesial/distal with lingual/buccal)

Question 9

Which junction demarkates the cervical line

Answer 9

Cementum-enamel Junction

Question 10

Where is a furcation on a tooth?

Answer 10

In between roots

Question 11

Which teeth have cusps?

Answer 11

Canines, premolars, and molars

Question 12

What are mamelons?

Answer 12

Rounded protuberances on newly erupted incisors on incisal edges.

Question 13

What is the cingulum?

Answer 13

The palatal/lingual lobe of anterior teeth (cervical 1/3)

Question 14

Which surface is the marginal ridge located on for anterior and posterior teeth each?

Answer 14

Palatal/lingual surface for anterior teeth, occlusal surface on posterior teeth

Question 15

Which teeth have triangular ridges?

Answer 15

Premolars and molars

Question 16

What is the developmental groove?

Answer 16

A shallow line that marks the junction between primary parts of the crown/root

Question 17

What is the supplemental groove?

Answer 17

Associated and less distinct than a developmental groove

Question 18

What is a pit?

Answer 18

A small depression located at the junction or developmental grooves

Question 19

What is a fossa?

Answer 19

An irregular depression or cavity on the palatal/lingual surface of incisors

Question 20

What is an emergence profile?

Answer 20

The angle at which the tooth emerges from the gum line.

Question 21

What is the height of contour?

Answer 21

The area of greatest convexity of a tooth.

Question 22

What are embrasures?

Answer 22

Triangular spaces between teeth, normally filled with gingival tissue