permanent anterior maxillary and mandibular

maxillary central incisors #8 and #9; formation begins

3-4 months

maxillary central incisors #8 and #9; eruption

7-8 years

maxillary central incisors #8 and #9; root completion

10 years

maxillary central incisors #8 and #9; CEJ

smooth convex curve toward the apex of the root

maxillary central incisors #8 and #9; root shape

smoothly tapered conical shape. thick in cervical third and narrows through the middle to a blunt apex

maxillary central incisors #8 and #9; root cross section

is triangular

maxillary central incisors #8 and #9; root apex

may curve toward distal or facial but typically not common

maxillary central incisors #8 and #9; distal edge

more rounded

maxillary central incisors #8 and #9; mesial edge

approx. 90 degrees

maxillary central incisors #8 and #9; lingual fossa

surrounded by 4 convexities:
1. mesial MR-- longer
2. distal MR
3. cingulum-- distal
4. incisal Ridge/Edge

maxillary central incisors #8 and #9; cingulum

displaced toward the distal

maxillary central incisors #8 and #9; contacts

distal contact more cervical than mesial contact

maxillary central incisors #8 and #9; height of contour; facial

cervical 1/3

maxillary central incisors #8 and #9; height of contour; lingual

cingulum

maxillary central incisors #8 and #9; crown to root ratio

1:1 ratio between the root and crown, almost the same size

maxillary central incisors #8 and #9; apex and crown alignment

almost a straight line

maxillary central incisors #8 and #9; functoins

• cut

• articulate speech

• support lip

• maintain esthetic appearance

incisor mamelons

developmental protuberances of enamel on the incisal edges of newly erupted teeth. Lobes of development (4)

maxillary lateral incisors #7 and #10; formation begins: 

10-12 months

maxillary lateral incisors #7 and #10; eruption: 

8-9 years

maxillary lateral incisors #7 and #10; root completion: 

11 years

maxillary lateral incisors #7 and #10; root

*LONGER ROOT than maxillary centrals, curves toward distal

maxillary lateral incisors #7 and #10; lingual view

Deeper lingual fossa than maxillary centrals

maxillary lateral incisors #7 and #10; cross section

ovoid

maxillary lateral incisors #7 and #10; distal edge

Distolingual developmental groove

maxillary lateral incisors #7 and #10; lingual tubercle

Looks like a cusp but is the cingulum

maxillary lateral incisors #7 and #10; height of contour; facial

cervical ⅓ 

maxillary lateral incisors #7 and #10; height of contour lingual;

cingulum

mandibular central incisors #24 and #25; formation begins

3-4 months

mandibular central incisors #24 and #25; eruption

6-7 years

mandibular central incisors #24 and #25; root completion

9 years

mandibular central incisors #24 and #25;

“The twins”

Incisal line angles nearly 90 degrees

Cannot distinguish #24 and #25 on Tooth ID exam

Smallest teeth in the mouth

Incisal edge, proximal contact and root apex align

mandibular central incisors #24 and #25; lingual view

cingulum is central

mandibular central incisors #24 and #25; facial view

bilaterally symmetrical

incisal line angles early 90 degrees

mandibular central incisors #24 and #25; height of contour; facial

cervical ⅓ 

mandibular central incisors #24 and #25; lingual

cingulum

mandibular lateral incisors #23 and #26; formation begins

3-4 months

mandibular lateral incisors #23 and #26; eruption

7-8 years

mandibular lateral incisors #23 and #26; root completion

10 years

mandibular lateral incisors #23 and #26; cingulum

displaced towards distal

mandibular lateral incisors #23 and #26; incisal edge

usually located lingual to long axis of tooth

mandibular lateral incisors #23 and #26; distal view

incisal edge appears twisted

mandibular lateral incisors #23 and #26; height of contour

facial - cervical 1/3

lingual - cingulum

maxillary canines #6 and #11; begin formation

4-5 months

maxillary canines #6 and #11; eruption

11-12 years

maxillary canines #6 and #11; root completion

13-15 years

maxillary canines #6 and #11; CEJ

Convex curve toward the apex of the root

maxillary canines #6 and #11; distal contact

in middle third

maxillary canines #6 and #11; mesial contact

in junction between incisal and middle thirds but looks more like middle third

maxillary canines #6 and #11; cingulum

height of centered cingulum is half the height of crown

most prominent cingulum

maxillary canines #6 and #11; cusp tips proximal view

cusp tip is facial to center on crown if you split tooth in half from proximal view

maxillary canines #6 and #11; cusp tip buccal view

position of cusp tip is mesial from buccal view

maxillary canines #6 and #11; root depression

mesial and distal depression on root but distal is deeper

maxillary canines #6 and #11; length

longest root in mouth

maxillary canines #6 and #11; proximal view

wide, short crown from proximal view

wedge/triangular shaped crown

maxillary canines #6 and #11; lingual view

lingual ridge down center

2 lingual fossae-between marginal ridges and lingual ridge

2 marginal ridge

maxillary canines #6 and #11; height of contour; facial

cervical 1/3

maxillary canines #6 and #11; height of contour; lingual

cervical 1/3 (formed by cingulum)

mandibular canines #22 and #27; formation begins

4-5 months

mandibular canines #22 and #27; eruption

9-10 years

mandibular canines #22 and #27; root completion

12-14 years

mandibular canines #22 and #27; root length

longer crown and shorter root than maxillary canines

mandibular canines #22 and #27; depression

depressions on both mesial and distal but distal is deeper

depressions are deeper on mand than mexiallry

mandibular canines #22 and #27; cusp tip

is mesial to center of crown

mandibular canines #22 and #27; cusp slope

mesial cusp slope is shorter than distal cusp slope

mandibular canines #22 and #27; contact

distal contact more cervical than mesial contact

mandibular canines #22 and #27; distal and mesial view

form continuous arc from distal and mesial views

mandibular canines #22 and #27; proximal view

wide, short root from proximal view

mandibular canines #22 and #27; cingulum

cingulum less prominent

cingulum centered or slightly towards distal

mandibular canines #22 and #27; height of contour

Facial= cervical ⅓ Lingual= cervical ⅓ (cingulum)

mandibular canines #22 and #27; max vs mand

max; right

mand; left