Incisors

Question 1

Which one is larger? Mandibular lateral or central incisors

Answer 1

Lateral

Question 2

Where is cingulum found and on which tooth

Answer 2

Bulge on the back, on all lingual surfaces of anterior teeth

Question 3

What is the wear pattern on the incisal edge of maxillary and mandibular incisors

Answer 3

The wear is on the lingual surface for maxillary and the wear is on the labial surface for mandibular

Question 4

How to differentiate between maxillary central and lateral incisor

Answer 4

1. root to crown ratio, crown to root ratio is smaller in central
2. Root is straighter in central
3. Central incisors: the mesial incisal angle is 90deg
4. Lateral incisors have a deeper but smaller fossa

Question 5

Difference in cingulum between maxillary central and lateral incisors

Answer 5

Maxillary central incisors cingulum slightly distal
Maxillary lateral incisors cingulum more centred

Question 6

Undulation of the cervical line

Answer 6

More undulation (ie more v shaped) at the mesial surface in anterior teeth

Question 7

How to distinguish between maxillary and mandibular incisors

Answer 7

The mandibular is lingual inclined

Question 8

Narrowest crown in the mouth

Answer 8

Mandibular central incisors

Question 9

Shape of the crown of the mandibular lateral incisors

Answer 9

Fan shaped, not symmetrical, crown tilts distally on the root

Question 10

How to distinguish right from left in a mandibular lateral incisor

Answer 10

Distoincisal edge is more curve
The distal side fans out

Question 11

This tooth has the largest curvature of the mesial cervical line

Answer 11

Maxillary Central incisors

Question 12

Do incisors have fossa/pits/grooves/cingulum

Answer 12

Upper incisors have pronounced cingulum and two ridges, one distal and mesial ridge, no grooves
Lateral incisors cingulum is more marked than central, associate with a deep pit

Lower incisors also have cingulum but not so pronounced. Flatly concave on the lingual surface