Incisors

Question 1

Function of incisors

Answer 1

to cut food, articulate speech, help support lip

Question 2

tooth numbers of incisors

Answer 2

Maxillary: 7, 8, 9, 10
Mandibular: 23, 24, 25, 26

Question 3

teeth develop from what?

Answer 3

from growth centers called lobes

Question 4

incisors develop from how many lobes?

Answer 4

from 4 lobes
facial surface from 3 of those lobes
lingual surface from 4th lobe
facial: mesial lobe, central lobe, distal lobe

Question 5

bumps on newly erupted teeth

Answer 5

mamelons

Question 6

proximal and lingual view of 4th lobe:

Answer 6

rounded elevation of enamel on lingual surface at crown

called cingulum

Question 7

biting surface: incisal edge meets proximal surfaces forms angles called…

Answer 7

• mesioincisal angle

- distoincisal angle

Question 8

Wider areas of crown-

Answer 8

where adjacent teeth contact: distal contact, mesial, crest of curvature
(because highest curve on facial surface)

Question 9

Cervix:

Answer 9

where crown and root meet

Question 10

height of contour:

Answer 10

high spot on lingual and labial surfaces (labial height of

contour and lingual height of contour)

Question 11

Root axis line:

Answer 11

vertical line through root and crown

Question 12

Maxillary central incisor linear elevations of enamel linear on incisal edge mesial and distal
surface, called…

Answer 12

ridges named for their position: incisal ridge, mesial marginal ridge, distal marginal ridge

Question 13

Marginal ridges terminate at…

Answer 13

cingulum